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1. Searching for asymmetric and heavily precessing Binary Black Holes in the gravitational wave data from the LIGO and Virgo third Observing Run

Author: Schmidt, Stefano, Caudill, Sarah, Creighton, Jolien D. E., Tsukada, Leo, Ray, Anarya, Adhicary, Shomik, Baral, Pratyusava, Baylor, Amanda, Cannon, Kipp, Cousins, Bryce, Ewing, Becca, Fong, Heather, George, Richard N., Godwin, Patrick, Hanna, Chad, Harada, Reiko, Huang, Yun-Jing, Huxford, Rachael, Joshi, Prathamesh, Kennington, James, Kuwahara, Soichiro, Li, Alvin K. Y., Magee, Ryan, Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Niu, Wanting, Pace, Alex, Posnansky, Cort, Sachdev, Surabhi, Sakon, Shio, Singh, Divya, Shah, Urja, Tapia, Ron, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, and Wade, Madeline
Subjects: General Relativity and Quantum Cosmology
Abstract: Leveraging the features of the GstLAL pipeline, we present the results of a matched filtering search for asymmetric binary black hole systems with heavily misaligned spins in LIGO and Virgo data taken during the third observing run. Our target systems show strong imprints of precession whereas current searches have non-optimal sensitivity in detecting them. After measuring the sensitivity improvement brought by our search over standard spin-aligned searches, we report the detection of 30 gravitational wave events already discovered in the latest version of the Gravitational Wave Transient Catalog. However, we do not find any additional significant gravitational wave candidates. Our results allow us to place an upper limit of $R_{90\%} = 0.28^{+0.33}_{-0.04}\;\; \mathrm{Gpc^{-3}yr^{-1}}$ on the merger rate of a hypothetical subpopulation of asymmetric, heavily precessing signals, not identified by other searches. Since our upper limit is consistent with the latest rate estimates from the LIGO-Virgo-KAGRA collaboration, our findings rule out the existence of a yet-to-be-discovered population of precessing binaries.
Published: 2024

2. Searching for gravitational-wave signals from precessing black hole binaries with the GstLAL pipeline

Author: Schmidt, Stefano, Caudill, Sarah, Creighton, Jolien D. E., Magee, Ryan, Tsukada, Leo, Adhicary, Shomik, Baral, Pratyusava, Baylor, Amanda, Cannon, Kipp, Cousins, Bryce, Ewing, Becca, Fong, Heather, George, Richard N., Godwin, Patrick, Hanna, Chad, Harada, Reiko, Huang, Yun-Jing, Huxford, Rachael, Joshi, Prathamesh, Kennington, James, Kuwahara, Soichiro, Li, Alvin K. Y., Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Niu, Wanting, Pace, Alex, Posnansky, Cort, Ray, Anarya, Sachdev, Surabhi, Sakon, Shio, Singh, Divya, Tapia, Ron, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, and Wade, Madeline
Subjects: General Relativity and Quantum Cosmology
Abstract: Precession in Binary Black Holes (BBH) is caused by the failure of the Black Hole spins to be aligned and its study can open up new perspectives in gravitational waves (GW) astronomy, providing, among other advancements, a precise measure of distance and an accurate characterization of the BBH spins. However, detecting precessing signals is a highly non-trivial task, as standard matched filtering pipelines for GW searches are built on many assumptions that do not hold in the precessing case. This work details the upgrades made to the GstLAL pipeline to facilitate the search for precessing BBH signals. The implemented changes in the search statistics and in the signal consistency test are then described in detail. The performance of the upgraded pipeline is evaluated through two extensive searches of precessing signals, targeting two different regions in the mass space, and the consistency of the results is examined. Additionally, the benefits of the upgrades are assessed by comparing the sensitive volume of the precessing searches with two corresponding traditional aligned-spin searches. While no significant sensitivity improvement is observed for precessing binaries with mass ratio $q\lesssim 6$, a volume increase of up to 100\% is attainable for heavily asymmetric systems with largely misaligned spins. Furthermore, our findings suggest that the primary cause of degraded performance in an aligned-spin search targeting precessing signals is not a poor signal-to-noise-ratio recovery but rather the failure of the $\xi^2$ signal-consistency test. Our work paves the way for a large-scale search for precessing signals, which could potentially result in exciting future detections.
Published: 2024

3. When to Point Your Telescopes: Gravitational Wave Trigger Classification for Real-Time Multi-Messenger Followup Observations

Author: Ray, Anarya, Niu, Wanting, Sakon, Shio, Ewing, Becca, Creighton, Jolien D. E., Hanna, Chad, Adhicary, Shomik, Baral, Pratyusava, Baylor, Amanda, Cannon, Kipp, Caudill, Sarah, Cousins, Bryce, Fong, Heather, George, Richard N., Godwin, Patrick, Harada, Reiko, Huang, Yun-Jing, Huxford, Rachael, Joshi, Prathamesh, Kapadia, Shasvath, Kennington, James, Kuwahara, Soichiro, Li, Alvin K. Y., Magee, Ryan, Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Pace, Alex, Posnansky, Cort, Sachdev, Surabhi, Singh, Divya, Tapia, Ron, Tsukada, Leo, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, and Wade, Madeline
Subjects: General Relativity and Quantum Cosmology, Astrophysics - High Energy Astrophysical Phenomena
Abstract: We develop a robust and self-consistent framework to extract and classify gravitational wave candidates from noisy data, for the purpose of assisting in real-time multi-messenger follow-ups during LIGO-Virgo-KAGRA's fourth observing run~(O4). Our formalism implements several improvements to the low latency calculation of the probability of astrophysical origin~(\PASTRO{}), so as to correctly account for various factors such as the sensitivity change between observing runs, and the deviation of the recovered template waveform from the true gravitational wave signal that can strongly bias said calculation. We demonstrate the high accuracy with which our new formalism recovers and classifies gravitational wave triggers, by analyzing replay data from previous observing runs injected with simulated sources of different categories. We show that these improvements enable the correct identification of the majority of simulated sources, many of which would have otherwise been misclassified. We carry out the aforementioned analysis by implementing our formalism through the \GSTLAL{} search pipeline even though it can be used in conjunction with potentially any matched filtering pipeline. Armed with robust and self-consistent \PASTRO{} values, the \GSTLAL{} pipeline can be expected to provide accurate source classification information for assisting in multi-messenger follow-up observations to gravitational wave alerts sent out during O4., Comment: v2 upload was accidental. revert back to v1
Published: 2023

4. Improved ranking statistics of the GstLAL inspiral search for compact binary coalescences

Author: Tsukada, Leo, Joshi, Prathamesh, Adhicary, Shomik, George, Richard, Guimaraes, Andre, Hanna, Chad, Magee, Ryan, Zimmerman, Aaron, Baral, Pratyusava, Baylor, Amanda, Cannon, Kipp, Caudill, Sarah, Cousins, Bryce, Creighton, Jolien D. E., Ewing, Becca, Fong, Heather, Godwin, Patrick, Harada, Reiko, Huang, Yun-Jing, Huxford, Rachael, Kennington, James, Kuwahara, Soichiro, Li, Alvin K. Y., Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Niu, Wanting, Pace, Alex, Posnansky, Cort, Ray, Anarya, Sachdev, Surabhi, Sakon, Shio, Singh, Divya, Tapia, Ron, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, and Wade, Madeline
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, General Relativity and Quantum Cosmology
Abstract: Starting from May 2023, the LIGO Scientific, Virgo and KAGRA Collaboration is planning to conduct the fourth observing run with improved detector sensitivities and an expanded detector network including KAGRA. Accordingly, it is vital to optimize the detection algorithm of low-latency search pipelines, increasing their sensitivities to gravitational waves from compact binary coalescences. In this work, we discuss several new features developed for ranking statistics of GstLAL-based inspiral pipeline, which mainly consist of: the signal contamination removal, the bank-$\xi^2$ incorporation, the upgraded $\rho-\xi^2$ signal model and the integration of KAGRA. An injection study demonstrates that these new features improve the pipeline's sensitivity by approximately 15% to 20%, paving the way to further multi-messenger observations during the upcoming observing run., Comment: 13pages, 6figures
Published: 2023
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5. Performance of the low-latency GstLAL inspiral search towards LIGO, Virgo, and KAGRA's fourth observing run

Author: Ewing, Becca, Huxford, Rachael, Singh, Divya, Tsukada, Leo, Hanna, Chad, Huang, Yun-Jing, Joshi, Prathamesh, Li, Alvin K. Y., Magee, Ryan, Messick, Cody, Pace, Alex, Ray, Anarya, Sachdev, Surabhi, Sakon, Shio, Tapia, Ron, Adhicary, Shomik, Baral, Pratyusava, Baylor, Amanda, Cannon, Kipp, Caudill, Sarah, Chaudhary, Sushant Sharma, Coughlin, Michael W., Cousins, Bryce, Creighton, Jolien D. E., Essick, Reed, Fong, Heather, George, Richard N., Godwin, Patrick, Harada, Reiko, Kennington, James, Kuwahara, Soichiro, Meacher, Duncan, Morisaki, Soichiro, Mukherjee, Debnandini, Niu, Wanting, Posnansky, Cort, Toivonen, Andrew, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, Wade, Madeline, and Waratkar, Gaurav
Subjects: General Relativity and Quantum Cosmology, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: GstLAL is a stream-based matched-filtering search pipeline aiming at the prompt discovery of gravitational waves from compact binary coalescences such as the mergers of black holes and neutron stars. Over the past three observation runs by the LIGO, Virgo, and KAGRA (LVK) collaboration, the GstLAL search pipeline has participated in several tens of gravitational wave discoveries. The fourth observing run (O4) is set to begin in May 2023 and is expected to see the discovery of many new and interesting gravitational wave signals which will inform our understanding of astrophysics and cosmology. We describe the current configuration of the GstLAL low-latency search and show its readiness for the upcoming observation run by presenting its performance on a mock data challenge. The mock data challenge includes 40 days of LIGO Hanford, LIGO Livingston, and Virgo strain data along with an injection campaign in order to fully characterize the performance of the search. We find an improved performance in terms of detection rate and significance estimation as compared to that observed in the O3 online analysis. The improvements are attributed to several incremental advances in the likelihood ratio ranking statistic computation and the method of background estimation., Comment: 19 pages, 21 figures
Published: 2023

6. Template bank for compact binary mergers in the fourth observing run of Advanced LIGO, Advanced Virgo, and KAGRA

Author: Sakon, Shio, Tsukada, Leo, Fong, Heather, Hanna, Chad, Kennington, James, Niu, Wanting, Adhicary, Shomik, Baral, Pratyusava, Baylor, Amanda, Cannon, Kipp, Caudill, Sarah, Cousins, Bryce, Creighton, Jolien D. E., Ewing, Becca, Godwin, Patrick, Harada, Reiko, Huang, Yun-Jing, Huxford, Rachael, Joshi, Prathamesh, Kuwahara, Soichiro, Li, Alvin K. Y., Magee, Ryan, Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Pace, Alex, Posnansky, Cort, Sachdev, Surabhi, Singh, Divya, Tapia, Ron, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, Wade, Madeline, and Wang, Jonathan
Subjects: General Relativity and Quantum Cosmology
Abstract: Matched-filtering gravitational wave search pipelines identify gravitational wave signals by computing correlations, i.e., signal-to-noise ratios, between gravitational wave detector data and gravitational wave template waveforms. Intrinsic parameters, the component masses and spins, of the gravitational wave waveforms are often stored in "template banks", and the construction of a densely populated template bank is essential for some gravitational wave search pipelines. This paper presents a template bank that is currently being used by the GstLAL-based compact binary search pipeline in the fourth observing run of the LIGO, Virgo, and KAGRA collaboration, and was generated with a new binary tree approach of placing templates, {\fontfamily{qcr}\selectfont manifold}. The template bank contains $1.8 \times 10^6$ sets of template parameters covering plausible neutron star and black hole systems up to a total mass of $400$ $M_\odot$ with component masses between $1$-$200$ $M_\odot$ and mass ratios between $1$ and $20$ under the assumption that each component object's angular momentum is aligned with the orbital angular momentum. We validate the template bank generated with our new method, {\fontfamily{qcr}\selectfont manifold}, by comparing it with a template bank generated with the previously used stochastic template placement method. We show that both template banks have similar effectualness. The {\fontfamily{qcr}\selectfont GstLAL} search pipeline performs singular value decomposition (SVD) on the template banks to reduce the number of filters used. We describe a new grouping of waveforms that improves the computational efficiency of SVD by nearly $5$ times as compared to previously reported SVD sorting schemes.
Published: 2022
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7. A binary tree approach to template placement for searches for gravitational waves from compact binary mergers

Author: Hanna, Chad, Kennington, James, Sakon, Shio, Privitera, Stephen, Fernandez, Miguel, Wang, Jonathan, Messick, Cody, Pace, Alex, Cannon, Kipp, Joshi, Prathamesh, Huxford, Rachael, Caudill, Sarah, Chan, Chiwai, Cousins, Bryce, Creighton, Jolien D. E., Ewing, Becca, Fong, Heather, Godwin, Patrick, Magee, Ryan, Meacher, Duncan, Morisaki, Soichiro, Mukherjee, Debnandini, Ohta, Hiroaki, Sachdev, Surabhi, Singh, Divya, Tapia, Ron, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, and Wade, Madeline
Subjects: General Relativity and Quantum Cosmology, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: We demonstrate a new geometric method for fast template placement for searches for gravitational waves from the inspiral, merger and ringdown of compact binaries. The method is based on a binary tree decomposition of the template bank parameter space into non-overlapping hypercubes. We use a numerical approximation of the signal overlap metric at the center of each hypercube to estimate the number of templates required to cover the hypercube and determine whether to further split the hypercube. As long as the expected number of templates in a given cube is greater than a given threshold, we split the cube along its longest edge according to the metric. When the expected number of templates in a given hypercube drops below this threshold, the splitting stops and a template is placed at the center of the hypercube. Using this method, we generate aligned-spin template banks covering the mass range suitable for a search of Advanced LIGO data. The aligned-spin bank required ~24 CPU-hours and produced 2 million templates. In general, we find that other methods, namely stochastic placement, produces a more strictly bounded loss in match between waveforms, with the same minimal match between waveforms requiring about twice as many templates with our proposed algorithm. Though we note that the average match is higher, which would lead to a higher detection efficiency. Our primary motivation is not to strictly minimize the number of templates with this algorithm, but rather to produce a bank with useful geometric properties in the physical parameter space coordinates. Such properties are useful for population modeling and parameter estimation.
Published: 2022

8. Metric Assisted Stochastic Sampling (MASS) search for gravitational waves from binary black hole mergers

Author: Hanna, Chad, Joshi, Prathamesh, Huxford, Rachael, Cannon, Kipp, Caudill, Sarah, Chan, Chiwai, Cousins, Bryce, Creighton, Jolien D. E., Ewing, Becca, Fernandez, Miguel, Fong, Heather, Godwin, Patrick, Magee, Ryan, Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Ohta, Hiroaki, Pace, Alexander, Privitera, Stephen, Sachdev, Surabhi, Sakon, Shio, Singh, Divya, Tapia, Ron, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, Wade, Madeline, and Wang, Jonathan
Subjects: General Relativity and Quantum Cosmology
Abstract: We present a novel gravitational wave detection algorithm that conducts a matched filter search stochastically across the compact binary parameter space rather than relying on a fixed bank of template waveforms. This technique is competitive with standard template-bank-driven pipelines in both computational cost and sensitivity. However, the complexity of the analysis is simpler allowing for easy configuration and horizontal scaling across heterogeneous grids of computers. To demonstrate the method we analyze approximately one month of public LIGO data from July 27 00:00 2017 UTC - Aug 25 22:00 2017 UTC and recover eight known confident gravitational wave candidates. We also inject simulated binary black hole (BBH) signals to demonstrate the sensitivity., Comment: 12 pages, 6 figures
Published: 2021
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9. Automating the Inclusion of Subthreshold Signal-to-Noise Ratios for Rapid Gravitational-Wave Localization

Author: Messick, Cody, Sachdev, Surabhi, Cannon, Kipp, Caudill, Sarah, Chan, Chiwai, Creighton, Jolien D. E., Everett, Ryan, Ewing, Becca, Fong, Heather, Godwin, Patrick, Hanna, Chad, Huxford, Rachael, Kapadia, Shasvath, Li, Alvin K. Y., Lo, Rico K. L., Magee, Ryan, Meacher, Duncan, Mohite, Siddharth R., Mukherjee, Debnandini, Nishizawa, Atsushi, Ohta, Hiroaki, Pace, Alexander, Reza, Amit, Shikauchi, Minori, Singer, Leo, Singh, Divya, SK, Javed Rana, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, Ueno, Koh, and Zimmerman, Aaron
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The accurate localization of gravitational-wave (GW) events in low-latency is a crucial element in the search for further multimessenger signals from these cataclysmic events. The localization of these events in low-latency uses signal-to-noise ratio (SNR) time-series from matched-filtered searches which identify candidate events. Here we report on an improvement to the GstLAL-based inspiral pipeline, the low-latency pipeline that identified GW170817 and GW190425, which automates the use of SNRs from all detectors in the network in rapid localization of GW events. This improvement was incorporated into the detection pipeline prior to the recent third observing run of the Advanced LIGO and Advanced Virgo detector network. Previously for this pipeline, manual intervention was required to use SNRs from all detectors if a candidate GW event was below an SNR threshold for any detector in the network. The use of SNRs from subthreshold events can meaningfully decrease the area of the 90% confidence region estimated by rapid localization. To demonstrate this, we present a study of the simulated detections of $\mathcal{O}(2\times10^4)$ binary neutron stars using a network mirroring the second observational run of the Advanced LIGO and Virgo detectors. When incorporating subthreshold SNRs in rapid localization, we find that the fraction of events that can be localized down to $100~\mathrm{deg}^2$ or smaller increases by a factor 1.18.
Published: 2020

10. Incorporation of Statistical Data Quality Information into the GstLAL Search Analysis

Author: Godwin, Patrick, Essick, Reed, Hanna, Chad, Cannon, Kipp, Caudill, Sarah, Chan, Chiwai, Creighton, Jolien D. E., Fong, Heather, Katsavounidis, Erik, Magee, Ryan, Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Ohta, Hiroaki, Pace, Alexander, de Ruiter, Iris, Sachdev, Surabhi, Tsukada, Leo, Tsutsui, Takuya, Ueno, Koh, Wade, Leslie, and Wade, Madeline
Subjects: General Relativity and Quantum Cosmology, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: We present updates to GstLAL, a matched filter gravitational-wave search pipeline, in Advanced LIGO and Virgo's third observing run. We discuss the incorporation of statistical data quality information into GstLAL's multi-dimensional likelihood ratio ranking statistic and additional improvements to search for gravitational wave candidates found in only one detector. Statistical data quality information is provided by iDQ, a data quality pipeline that infers the presence of short-duration transient noise in gravitational-wave data using the interferometer's auxiliary state, which has operated in near real-time since before LIGO's first observing run in 2015. We look at the performance and impact on noise rejection by the inclusion of iDQ information in GstLAL's ranking statistic, and discuss GstLAL results in the GWTC-2 catalog, focusing on two case studies; GW190424A, a single-detector gravitational-wave event found by GstLAL and a period of time in Livingston impacted by a thunderstorm., Comment: 8 pages, 5 figures
Published: 2020

11. GstLAL: A software framework for gravitational wave discovery

Author: Cannon, Kipp, Caudill, Sarah, Chan, Chiwai, Cousins, Bryce, Creighton, Jolien D. E., Ewing, Becca, Fong, Heather, Godwin, Patrick, Hanna, Chad, Hooper, Shaun, Huxford, Rachael, Magee, Ryan, Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Ohta, Hiroaki, Pace, Alexander, Privitera, Stephen, de Ruiter, Iris, Sachdev, Surabhi, Singer, Leo, Singh, Divya, Tapia, Ron, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, and Wade, Madeline
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The GstLAL library, derived from Gstreamer and the LIGO Algorithm Library, supports a stream-based approach to gravitational-wave data processing. Although GstLAL was primarily designed to search for gravitational-wave signatures of merging black holes and neutron stars, it has also contributed to other gravitational-wave searches, data calibration, and detector-characterization efforts. GstLAL has played an integral role in all of the LIGO-Virgo collaboration detections, and its low-latency configuration has enabled rapid electromagnetic follow-up for dozens of compact binary candidates.
Published: 2020

12. Improving the background estimation technique in the GstLAL inspiral pipeline with the time-reversed template bank

Author: Chan, Chiwai, Cannon, Kipp, Caudill, Sarah, Fong, Heather, Godwin, Patrick, Hanna, Chad, Kapadia, Shasvath, Magee, Ryan, Meacher, Duncan, Messick, Cody, Mohite, Siddharth R., Morisaki, Soichiro, Mukherjee, Debnandini, Nishizawa, Atsushi, Ohta, Hiroaki, Pace, Alexander, Sachdev, Surabhi, Shikauchi, Minori, Singer, Leo, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, and Ueno, Koh
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, General Relativity and Quantum Cosmology
Abstract: Background estimation is important for determining the statistical significance of a gravitational-wave event. Currently, the background model is constructed numerically from the strain data using estimation techniques that insulate the strain data from any potential signals. However, as the observation of gravitational-wave signals become frequent, the effectiveness of such insulation will decrease. Contamination occurs when signals leak into the background model. In this work, we demonstrate an improved background estimation technique for the searches of gravitational waves (GWs) from binary neutron star coalescences by time-reversing the modeled GW waveforms. We found that the new method can robustly avoid signal contamination at a signal rate of about one per 20 seconds and retain a clean background model in the presence of signals.
Published: 2020

13. An early warning system for electromagnetic follow-up of gravitational-wave events

Author: Sachdev, Surabhi, Magee, Ryan, Hanna, Chad, Cannon, Kipp, Singer, Leo, SK, Javed Rana, Mukherjee, Debnandini, Caudill, Sarah, Chan, Chiwai, Creighton, Jolien D. E., Ewing, Becca, Fong, Heather, Godwin, Patrick, Huxford, Rachael, Kapadia, Shasvath, Li, Alvin K. Y., Lo, Rico Ka Lok, Meacher, Duncan, Messick, Cody, Mohite, Siddharth R., Nishizawa, Atsushi, Ohta, Hiroaki, Pace, Alexander, Reza, Amit, Sathyaprakash, B. S., Shikauchi, Minori, Singh, Divya, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, and Ueno, Koh
Subjects: Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology
Abstract: Binary neutron stars (BNSs) will spend $\simeq 10$ -- 15 minutes in the band of Advanced LIGO and Virgo detectors at design sensitivity. Matched-filtering of gravitational-wave (GW) data could in principle accumulate enough signal-to-noise ratio (SNR) to identify a forthcoming event tens of seconds before the companions collide and merge. Here we report on the design and testing of an early warning gravitational-wave detection pipeline. Early warning alerts can be produced for sources that are at low enough redshift so that a large enough SNR accumulates $\sim 10 - 60\,\rm s$ before merger. We find that about 7% (respectively, 49%) of the total detectable BNS mergers will be detected $60\, \rm s$ ($10\, \rm s$) before the merger. About 2% of the total detectable BNS mergers will be detected before merger and localized to within $100\, \rm \text{deg}^2$ (90% credible interval). Coordinated observing by several wide-field telescopes could capture the event seconds before or after the merger. LIGO-Virgo detectors at design sensitivity could facilitate observing at least one event at the onset of merger., Comment: small update in numbers caused by using a more updated local BNS rate estimate
Published: 2020
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14. Detectability of bigravity with graviton oscillations using gravitational wave observations

Author: Narikawa, Tatsuya, Ueno, Koh, Tagoshi, Hideyuki, Tanaka, Takahiro, Kanda, Nobuyuki, and Nakamura, Takashi
Subjects: General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: The gravitational waveforms in the ghost-free bigravity theory exhibit deviations from those in general relativity. The main difference is caused by graviton oscillations in the bigravity theory. We investigate the prospects for the detection of the corrections to gravitational waveforms from coalescing compact binaries due to graviton oscillations and for constraining bigravity parameters with the gravitational wave observations. We consider the bigravity model discussed by the De Felice-Nakamura-Tanaka subset of the bigravity model, and the phenomenological model in which the bigravity parameters are treated as independent variables. In both models, the bigravity waveform shows strong amplitude modulation, and there can be a characteristic frequency of the largest peak of the amplitude, which depends on the bigravity parameters. We show that there is a detectable region of the bigravity parameters for the advanced ground-based laser interferometers, such as Advanced LIGO, Advanced Virgo, and KAGRA. This region corresponds to the effective graviton mass of $\mu \geq 10^{-17}~{\rm cm}^{-1}$ for $\tilde{c}-1 \geq 10^{-19}$ in the phenomenological model, while $\mu \geq 10^{-16.5}~{\rm cm}^{-1}$ for $\kappa\xi_c^2 \geq 10^{0.5}$ in the De Felice-Nakamura-Tanaka subset of the bigravity model, respectively, where $\tilde{c}$ is the propagation speed of the massive graviton and $\kappa\xi_c^2$ corresponds to the corrections to the gravitational constant in general relativity. These regions are not excluded by existing solar system tests. We also show that, in the case of $1.4-1.4M_{\rm sun}$ binaries at the distance of $200~{\rm Mpc}$, $\log\mu^2$ is determined with an accuracy of ${\cal O}$(0.1)\% at the 1$\sigma$ level for a fiducial model with $\mu^2=10^{-33}~{\rm cm}^{-2}$ in the case of the phenomenological model., Comment: 14 pages, 14 figures; v2: matches the published version in Phys. Rev. D
Published: 2014
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15. Binary tree approach to template placement for searches for gravitational waves from compact binary mergers

Author: Hanna, Chad, primary, Kennington, James, additional, Sakon, Shio, additional, Privitera, Stephen, additional, Fernandez, Miguel, additional, Wang, Jonathan, additional, Messick, Cody, additional, Pace, Alex, additional, Cannon, Kipp, additional, Joshi, Prathamesh, additional, Huxford, Rachael, additional, Caudill, Sarah, additional, Chan, Chiwai, additional, Cousins, Bryce, additional, Creighton, Jolien D. E., additional, Ewing, Becca, additional, Fong, Heather, additional, Godwin, Patrick, additional, Magee, Ryan, additional, Meacher, Duncan, additional, Morisaki, Soichiro, additional, Mukherjee, Debnandini, additional, Ohta, Hiroaki, additional, Sachdev, Surabhi, additional, Singh, Divya, additional, Tapia, Ron, additional, Tsukada, Leo, additional, Tsuna, Daichi, additional, Tsutsui, Takuya, additional, Ueno, Koh, additional, Viets, Aaron, additional, Wade, Leslie, additional, and Wade, Madeline, additional
Published: 2023
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16. Improved ranking statistics of the GstLAL inspiral search for compact binary coalescences

Author: Tsukada, Leo, primary, Joshi, Prathamesh, additional, Adhicary, Shomik, additional, George, Richard, additional, Guimaraes, Andre, additional, Hanna, Chad, additional, Magee, Ryan, additional, Zimmerman, Aaron, additional, Baral, Pratyusava, additional, Baylor, Amanda, additional, Cannon, Kipp, additional, Caudill, Sarah, additional, Cousins, Bryce, additional, Creighton, Jolien D. E., additional, Ewing, Becca, additional, Fong, Heather, additional, Godwin, Patrick, additional, Harada, Reiko, additional, Huang, Yun-Jing, additional, Huxford, Rachael, additional, Kennington, James, additional, Kuwahara, Soichiro, additional, Li, Alvin K. Y., additional, Meacher, Duncan, additional, Messick, Cody, additional, Morisaki, Soichiro, additional, Mukherjee, Debnandini, additional, Niu, Wanting, additional, Pace, Alex, additional, Posnansky, Cort, additional, Ray, Anarya, additional, Sachdev, Surabhi, additional, Sakon, Shio, additional, Singh, Divya, additional, Tapia, Ron, additional, Tsutsui, Takuya, additional, Ueno, Koh, additional, Viets, Aaron, additional, Wade, Leslie, additional, and Wade, Madeline, additional
Published: 2023
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17. Noise subtraction from KAGRA O3GK data using Independent Component Analysis

Author: Kume, Jun'ya, primary, Kobayashi, Yuichiro, additional, Fukunaga, Isamu, additional, Kiyota, Taisei, additional, Itoh, Yousuke, additional, Ueno, Koh, additional, Yokoyama, Jun’ichi, additional, Washimi, Tatsuki, additional, and Yokozawa, Takaaki, additional
Published: 2023
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18. Metric assisted stochastic sampling search for gravitational waves from binary black hole mergers

Author: Hanna, Chad, primary, Joshi, Prathamesh, additional, Huxford, Rachael, additional, Cannon, Kipp, additional, Caudill, Sarah, additional, Chan, Chiwai, additional, Cousins, Bryce, additional, Creighton, Jolien D. E., additional, Ewing, Becca, additional, Fernandez, Miguel, additional, Fong, Heather, additional, Godwin, Patrick, additional, Magee, Ryan, additional, Meacher, Duncan, additional, Messick, Cody, additional, Morisaki, Soichiro, additional, Mukherjee, Debnandini, additional, Ohta, Hiroaki, additional, Pace, Alexander, additional, Privitera, Stephen, additional, Sachdev, Surabhi, additional, Sakon, Shio, additional, Singh, Divya, additional, Tapia, Ron, additional, Tsukada, Leo, additional, Tsuna, Daichi, additional, Tsutsui, Takuya, additional, Ueno, Koh, additional, Viets, Aaron, additional, Wade, Leslie, additional, Wade, Madeline, additional, and Wang, Jonathan, additional
Published: 2022
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19. The Current Status and Future Prospects of KAGRA, the Large-Scale Cryogenic Gravitational Wave Telescope Built in the Kamioka Underground

Author: Abe, Homare, primary, Akutsu, Tomotada, additional, Ando, Masaki, additional, Araya, Akito, additional, Aritomi, Naoki, additional, Asada, Hideki, additional, Aso, Yoichi, additional, Bae, Sangwook, additional, Bajpai, Rishabh, additional, Cannon, Kipp, additional, Cao, Zhoujian, additional, Capocasa, Eleonora, additional, Chan, Man, additional, Chen, Dan, additional, Chen, Yi-Ru, additional, Eisenmann, Marc, additional, Flaminio, Raffaele, additional, Fong, Heather, additional, Fujikawa, Yuta, additional, Fujimoto, Yuya, additional, Hadiputrawan, I., additional, Haino, Sadakazu, additional, Han, Wenbiao, additional, Hayama, Kazuhiro, additional, Himemoto, Yoshiaki, additional, Hirata, Naoatsu, additional, Hirose, Chiaki, additional, Ho, Tsung-Chieh, additional, Hsieh, Bin-Hua, additional, Hsieh, He-Feng, additional, Hsiung, Chia-Hsuan, additional, Huang, Hsiang-Yu, additional, Huang, Panwei, additional, Huang, Yao-Chin, additional, Huang, Yun-Jing, additional, Hui, David, additional, Inayoshi, Kohei, additional, Inoue, Yuki, additional, Itoh, Yousuke, additional, Jung, Pil-Jong, additional, Kajita, Takaaki, additional, Kamiizumi, Masahiro, additional, Kanda, Nobuyuki, additional, Kato, Takashi, additional, Kim, Chunglee, additional, Kim, Jaewan, additional, Kim, Young-Min, additional, Kobayashi, Yuichiro, additional, Kohri, Kazunori, additional, Kokeyama, Keiko, additional, Kong, Albert, additional, Koyama, Naoki, additional, Kozakai, Chihiro, additional, Kume, Jun’ya, additional, Kuroyanagi, Sachiko, additional, Kwak, Kyujin, additional, Lee, Eunsub, additional, Lee, Hyung, additional, Lee, Ray-Kuang, additional, Leonardi, Matteo, additional, Li, Kwan-Lok, additional, Li, Pengbo, additional, Lin, Lupin, additional, Lin, Chun-Yu, additional, Lin, En-Tzu, additional, Lin, Hong-Lin, additional, Liu, Guo-Chin, additional, Luo, Ling-Wei, additional, Ma’arif, Miftahul, additional, Michimura, Yuta, additional, Mio, Norikatsu, additional, Miyakawa, Osamu, additional, Miyo, Kouseki, additional, Miyoki, Shinji, additional, Morisue, Nozomi, additional, Nakamura, Kouji, additional, Nakano, Hiroyuki, additional, Nakano, Masayuki, additional, Narikawa, Tatsuya, additional, Quynh, Lan, additional, Nishimoto, Takumi, additional, Nishizawa, Atsushi, additional, Obayashi, Yoshihisa, additional, Oh, Kwangmin, additional, Ohashi, Masatake, additional, Ohashi, Tomoya, additional, Ohkawa, Masashi, additional, Okutani, Yoshihiro, additional, Oohara, Ken-ichi, additional, Oshino, Shoichi, additional, Pan, Kuo-Chuan, additional, Parisi, Alessandro, additional, Park, June, additional, Arellano, Fabián, additional, Saha, Surojit, additional, Sakai, Kazuki, additional, Sawada, Takahiro, additional, Sekiguchi, Yuichiro, additional, Shao, Lijing, additional, Shikano, Yutaka, additional, Shimizu, Hirotaka, additional, Shimode, Katsuhiko, additional, Shinkai, Hisaaki, additional, Shoda, Ayaka, additional, Somiya, Kentaro, additional, Song, Inhyeok, additional, Sugimoto, Ryosuke, additional, Suresh, Jishnu, additional, Suzuki, Takamasa, additional, Suzuki, Takanori, additional, Suzuki, Toshikazu, additional, Tagoshi, Hideyuki, additional, Takahashi, Hirotaka, additional, Takahashi, Ryutaro, additional, Takeda, Hiroki, additional, Takeda, Mei, additional, Taruya, Atsushi, additional, Tomaru, Takayuki, additional, Tomura, Tomonobu, additional, Trozzo, Lucia, additional, Tsang, Terrence, additional, Tsuchida, Satoshi, additional, Tsutsui, Takuya, additional, Tuyenbayev, Darkhan, additional, Uchikata, Nami, additional, Uchiyama, Takashi, additional, Uehara, Tomoyuki, additional, Ueno, Koh, additional, Ushiba, Takafumi, additional, Putten, Maurice, additional, Washimi, Tatsuki, additional, Wu, Chien-Ming, additional, Wu, Hsun-Chung, additional, Yamada, Tomohiro, additional, Yamamoto, Kazuhiro, additional, Yamamoto, Takahiro, additional, Yamazaki, Ryo, additional, Yeh, Shu-Wei, additional, Yokoyama, Jun’ichi, additional, Yokozawa, Takaaki, additional, Yuzurihara, Hirotaka, additional, Zeidler, Simon, additional, and Zhao, Yuhang, additional
Published: 2022
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20. GstLAL: A software framework for gravitational wave discovery

Author: Cannon, Kipp, primary, Caudill, Sarah, additional, Chan, Chiwai, additional, Cousins, Bryce, additional, Creighton, Jolien D.E., additional, Ewing, Becca, additional, Fong, Heather, additional, Godwin, Patrick, additional, Hanna, Chad, additional, Hooper, Shaun, additional, Huxford, Rachael, additional, Magee, Ryan, additional, Meacher, Duncan, additional, Messick, Cody, additional, Morisaki, Soichiro, additional, Mukherjee, Debnandini, additional, Ohta, Hiroaki, additional, Pace, Alexander, additional, Privitera, Stephen, additional, de Ruiter, Iris, additional, Sachdev, Surabhi, additional, Singer, Leo, additional, Singh, Divya, additional, Tapia, Ron, additional, Tsukada, Leo, additional, Tsuna, Daichi, additional, Tsutsui, Takuya, additional, Ueno, Koh, additional, Viets, Aaron, additional, Wade, Leslie, additional, and Wade, Madeline, additional
Published: 2021
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21. GstLAL: A software framework for gravitational wave discovery

Author: Cannon, Kipp, Caudill, Sarah, Chan, Chiwai, Cousins, Bryce, Creighton, Jolien D.E., Ewing, Becca, Fong, Heather, Godwin, Patrick, Hanna, Chad, Hooper, Shaun, Huxford, Rachael, Magee, Ryan, Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Ohta, Hiroaki, Pace, Alexander, Privitera, Stephen, de Ruiter, Iris, Sachdev, Surabhi, Singer, Leo, Singh, Divya, Tapia, Ron, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, Wade, Madeline, Cannon, Kipp, Caudill, Sarah, Chan, Chiwai, Cousins, Bryce, Creighton, Jolien D.E., Ewing, Becca, Fong, Heather, Godwin, Patrick, Hanna, Chad, Hooper, Shaun, Huxford, Rachael, Magee, Ryan, Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Ohta, Hiroaki, Pace, Alexander, Privitera, Stephen, de Ruiter, Iris, Sachdev, Surabhi, Singer, Leo, Singh, Divya, Tapia, Ron, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, and Wade, Madeline
Abstract: The GstLAL library, derived from Gstreamer and the LIGO Algorithm Library, supports a stream-based approach to gravitational-wave data processing. Although GstLAL was primarily designed to search for gravitational-wave signatures of merging black holes and neutron stars, it has also contributed to other gravitational-wave searches, data calibration, and detector-characterization efforts. GstLAL has played an integral role in all of the LIGO-Virgo collaboration detections, and its low-latency configuration has enabled rapid electromagnetic follow-up for dozens of compact binary candidates.
Published: 2021

22. GstLAL: A software framework for gravitational wave discovery

Author: Sub Subatomic Physics (SAP), Subatomic Physics, Cannon, Kipp, Caudill, Sarah, Chan, Chiwai, Cousins, Bryce, Creighton, Jolien D.E., Ewing, Becca, Fong, Heather, Godwin, Patrick, Hanna, Chad, Hooper, Shaun, Huxford, Rachael, Magee, Ryan, Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Ohta, Hiroaki, Pace, Alexander, Privitera, Stephen, de Ruiter, Iris, Sachdev, Surabhi, Singer, Leo, Singh, Divya, Tapia, Ron, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, Wade, Madeline, Sub Subatomic Physics (SAP), Subatomic Physics, Cannon, Kipp, Caudill, Sarah, Chan, Chiwai, Cousins, Bryce, Creighton, Jolien D.E., Ewing, Becca, Fong, Heather, Godwin, Patrick, Hanna, Chad, Hooper, Shaun, Huxford, Rachael, Magee, Ryan, Meacher, Duncan, Messick, Cody, Morisaki, Soichiro, Mukherjee, Debnandini, Ohta, Hiroaki, Pace, Alexander, Privitera, Stephen, de Ruiter, Iris, Sachdev, Surabhi, Singer, Leo, Singh, Divya, Tapia, Ron, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, Ueno, Koh, Viets, Aaron, Wade, Leslie, and Wade, Madeline
Published: 2021

23. An Early-warning System for Electromagnetic Follow-up of Gravitational-wave Events

Author: Sub Subatomic Physics (SAP), Subatomic Physics, Sachdev, Surabhi, Magee, Ryan, Hanna, Chad, Cannon, Kipp, Singer, Leo, SK, Javed Rana, Mukherjee, Debnandini, Caudill, Sarah, Chan, Chiwai, Creighton, Jolien D. E., Ewing, Becca, Fong, Heather, Godwin, Patrick, Huxford, Rachael, Kapadia, Shasvath, Li, Alvin K. Y., Lok Lo, Rico Ka, Meacher, Duncan, Messick, Cody, Mohite, Siddharth R., Nishizawa, Atsushi, Ohta, Hiroaki, Pace, Alexander, Reza, Amit, Sathyaprakash, B. S., Shikauchi, Minori, Singh, Divya, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, Ueno, Koh, Sub Subatomic Physics (SAP), Subatomic Physics, Sachdev, Surabhi, Magee, Ryan, Hanna, Chad, Cannon, Kipp, Singer, Leo, SK, Javed Rana, Mukherjee, Debnandini, Caudill, Sarah, Chan, Chiwai, Creighton, Jolien D. E., Ewing, Becca, Fong, Heather, Godwin, Patrick, Huxford, Rachael, Kapadia, Shasvath, Li, Alvin K. Y., Lok Lo, Rico Ka, Meacher, Duncan, Messick, Cody, Mohite, Siddharth R., Nishizawa, Atsushi, Ohta, Hiroaki, Pace, Alexander, Reza, Amit, Sathyaprakash, B. S., Shikauchi, Minori, Singh, Divya, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, and Ueno, Koh
Published: 2020

24. An Early-warning System for Electromagnetic Follow-up of Gravitational-wave Events

Author: Sachdev, Surabhi, primary, Magee, Ryan, additional, Hanna, Chad, additional, Cannon, Kipp, additional, Singer, Leo, additional, SK, Javed Rana, additional, Mukherjee, Debnandini, additional, Caudill, Sarah, additional, Chan, Chiwai, additional, Creighton, Jolien D. E., additional, Ewing, Becca, additional, Fong, Heather, additional, Godwin, Patrick, additional, Huxford, Rachael, additional, Kapadia, Shasvath, additional, Li, Alvin K. Y., additional, Lok Lo, Rico Ka, additional, Meacher, Duncan, additional, Messick, Cody, additional, Mohite, Siddharth R., additional, Nishizawa, Atsushi, additional, Ohta, Hiroaki, additional, Pace, Alexander, additional, Reza, Amit, additional, Sathyaprakash, B. S., additional, Shikauchi, Minori, additional, Singh, Divya, additional, Tsukada, Leo, additional, Tsuna, Daichi, additional, Tsutsui, Takuya, additional, and Ueno, Koh, additional
Published: 2020
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25. A time–frequency analysis of gravitational wave signals with non-harmonic analysis

Author: Yanagisawa, Kenta, primary, Jia, Dongbao, additional, Hirobayashi, Shigeki, additional, Uchikata, Nami, additional, Narikawa, Tatsuya, additional, Ueno, Koh, additional, Takahashi, Hirotaka, additional, and Tagoshi, Hideyuki, additional
Published: 2019
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26. Full band all-sky search for periodic gravitational waves in the O1 LIGO data

Author: Abbott, Benjamin P., Abbott, Rich, Abbott, Thomas D., Acernese, Fausto, Ackley, Kendall, Adams, Carl, Adams, Thomas, Addesso, Paolo, Adhikari, Rana X., Adya, Vaishali B., Affeldt, Christoph, Afrough, Mohammad, Agarwal, Bhanu, Agathos, Michalis, Agatsuma, Kazuhiro, Aggarwal, Nancy, Aguiar, Odylio D., Aiello, Lorenzo, Ain, Anirban, Allen, Bruce, Allen, Gabrielle, Allocca, Annalisa, Altin, Paul A., Amato, Alex, Ananyeva, Alena, Anderson, Stuart B., Anderson, Warren G., Angelova, Svetoslava V., Antier, Sarah, Appert, Stephen, Arai, Koji, Araya, Melody C., Areeda, Joseph S., Arnaud, Nicolas, Ascenzi, Stefano, Ashton, Gregory, Ast, M., Aston, Stuart M., Astone, Pia, Atallah, Dany V., Aufmuth, Peter, Aulbert, Carsten, AultONeal, K., Austin, Corey, Avila-Alvarez, A., Babak, Stanislav, Bacon, Philippe, Bader, Maria K.M., Bae, Sangwook, Baker, Paul T., Baldaccini, Francesca, Ballardin, Giulio, Ballmer, Stefan W., Banagiri, Sharan, Barayoga, Juan C., Barclay, Sheena E., Barish, Barry C., Barker, David, Barkett, Kevin, Barone, Fabrizio, Barr, Bryan, Barsotti, Lisa, Barsuglia, Matteo, Barta, Daniel, Bartlett, Jeffrey, Bartos, Imre, Bassiri, Riccardo, Basti, Andrea, Batch, James C., Bawaj, Mateusz, Bayley, Joseph C., Bazzan, Marco, Bécsy, Bence, Beer, Christian, Bejger, Michal, Belahcene, Imene, Bell, Angus S., Berger, Beverly K., Bergmann, Gerald, Bero, John J., Berry, Christopher P.L., Bersanetti, Diego, Bertolini, Alessandro, Betzwieser, Joseph, Bhagwat, Swetha, Bhandare, Rohan, Bilenko, Igor A., Billingsley, Garilynn, Billman, Chris R., Birch, Jeremy, Birney, Ross, Birnholtz, Ofek, Biscans, Sebastien, Biscoveanu, Sylvia, Bisht, Aparna, Bitossi, Massimiliano, Biwer, Christopher, Bizouard, Marieanne A., Blackburn, J.K., Blackman, Jonathan, Blair, Carl D., Blair, David G., Blair, Ryan M., Bloemen, Steven, Bock, Oliver, Bode, Nina, Boer, Michel, Bogaert, Gilles, Bohe, Alejandro, Bondu, Francois, Bonilla, Edgard, Bonnand, Romain, Boom, Boris A., Bork, Rolf, Boschi, Valerio, Bose, Sukanta, Bossie, Ken, Bouffanais, Yann, Bozzi, Antonella, Bradaschia, Carlo, Brady, Patrick R., Branchesi, Marica, Brau, Jim E., Briant, Tristan, Brillet, Alain, Brinkmann, Marc, Brisson, Violette, Brockill, Patrick, Broida, Jacob E., Brooks, Aidan F., Brown, Duncan A., Brown, Daniel D., Brunett, Sharon, Buchanan, Christopher C., Buikema, Aaron, Bulik, Tomasz, Bulten, Henk J., Buonanno, Alessandra, Buskulic, Damir, Buy, Christelle, Byer, Robert L., Cabero, Miriam, Cadonati, Laura, Cagnoli, Giampietro, Cahillane, Craig, Calderón Bustillo, J., Callister, Thomas A., Calloni, Enrico, Camp, Jordan B., Canepa, Maurizio, Canizares, Priscilla, Cannon, Kipp C., Cao, H., Cao, Junwei, Capano, Collin D., Capocasa, Eleonora, Carbognani, Franco, Caride, Santiago, Carney, Matthew F., Casanueva Diaz, J., Casentini, Claudio, Caudill, Sarah, Cavaglià, Marco, Cavalier, Fabien, Cavalieri, Roberto, Cella, Giancarlo, Cepeda, Christian B., Cerdá-Durán, P., Cerretani, Giovanni, Cesarini, Elisabetta, Chamberlin, Sydney J., Chan, Manleong, Chao, Shiuh, Charlton, Philip, Chase, Eve, Chassande-Mottin, E., Chatterjee, Deep, Cheeseboro, Belinda D., Chen, H.Y., Chen, Xu, Chen, Yanbei, Cheng, H.-P., Chia, Hanyu Y., Chincarini, Andrea, Chiummo, Antonino, Chmiel, Theresa, Cho, Heesuk S., Cho, M., Chow, Jong H., Christensen, Nelson, Chu, Qi, Chua, Alvin J.K., Chua, Sheon, Chung, A.K.W., Chung, Shinkee, Ciani, Giacomo, Ciecielag, P., Ciolfi, Riccardo, Cirelli, Carissa E., Cirone, Alessio, Clara, Filiberto, Clark, James A., Clearwater, Patrick, Cleva, Frederic, Cocchieri, Camillo, Coccia, Eugenio, Cohadon, P.-F., Cohen, David, Colla, Alberto, Collette, Christophe G., Cominsky, Lynn R., Constancio, M., Conti, Livia, Cooper, Sam J., Corban, Paul, Corbitt, Thomas R., Cordero-Carrión, I., Corley, Kenneth R., Cornish, Neil, Corsi, Alessandra, Cortese, Stefano, Costa, Cesar A., Coughlin, Eric T., Coughlin, Michael W., Coughlin, Scott B., Coulon, J.-P., Countryman, Stefan T., Couvares, Peter, Covas, Pep B., Cowan, Erika E., Coward, David M., Cowart, Matthew J., Coyne, Dennis C., Coyne, Robert, Creighton, Jolien D.E., Creighton, Teviet D., Cripe, Jonathan, Crowder, Sgwynne G., Cullen, Torrey J., Cumming, Alan, Cunningham, Liam, Cuoco, Elena, Dal Canton, Tito, Dálya, Gergely, Danilishin, Stefan L., D'Antonio, S., Danzmann, Karsten, Dasgupta, Arnab, Da Silva Costa, C.F., Dattilo, Vincenzo, Dave, Ishant, Davier, Michel, Davis, Derek, Daw, Edward J., Day, Brian, De, Soumi, Debra, D., Degallaix, Jerome, De Laurentis, M., Deléglise, Samuel, Del Pozzo, W., Demos, Nicholas, Denker, Timo, Dent, Thomas, De Pietri, R., Dergachev, Vladimir, De Rosa, R., DeRosa, R.T., De Rossi, C., DeSalvo, R., de Varona, O., Devenson, Jan, Dhurandhar, Sanjeev, Díaz, Mario C., Di Fiore, L., Di Giovanni, M., Di Girolamo, T., Di Lieto, A., Di Pace, S., Di Palma, I., Di Renzo, F., Doctor, Zoheyr, Dolique, Vincent, Donovan, Fred, Dooley, Katherine L., Doravari, Suresh, Dorosh, O., Dorrington, Iain, Douglas, Rebecca, Dovale Álvarez, M., Downes, Thomas P., Drago, Marco, Dreissigacker, Christoph, Driggers, Jenne C., Du, Zhihui, Ducrot, Marine, Dupej, Peter, Dwyer, Sheila E., Edo, Tega B., Edwards, Matthew C., Effler, Anamaria, Eggenstein, H.-B., Ehrens, Phil, Eichholz, Johannes, Eikenberry, Stephen S., Eisenstein, Robert A., Essick, Reed C., Estevez, Dimitri, Etienne, Zachariah B., Etzel, Todd, Evans, Matthew, Evans, Tom M., Factourovich, Maxim, Fafone, Viviana, Fair, Hannah, Fairhurst, Stephen, Fan, Xilong, Farinon, Stefania, Farr, Benjamin, Farr, Will M., Fauchon-Jones, E.J., Favata, Marc, Fays, Maxime, Fee, Campbell, Fehrmann, Henning, Feicht, Jon, Fejer, Martin M., Fernandez-Galiana, A., Ferrante, Isidoro, Ferreira, Elvis C., Ferrini, Federico, Fidecaro, Francesco, Finstad, Daniel, Fiori, Irene, Fiorucci, Donatella, Fishbach, Maya, Fisher, Ryan P., Fitz-Axen, M., Flaminio, Raffaele, Fletcher, Mark, Fong, Heather, Font, J.A., Forsyth, Perry W.F., Forsyth, Steven S., Fournier, J.-D., Frasca, Sergio, Frasconi, Franco, Frei, Zsolt, Freise, Andreas, Frey, Raymond, Frey, Valentin, Fries, Eric M., Fritschel, Peter, Frolov, Valery V., Fulda, Paul, Fyffe, Michael, Gabbard, Hunter, Gadre, Bhooshan U., Gaebel, Sebastian M., Gair, Jonathan R., Gammaitoni, Luca, Ganija, Miftar R., Gaonkar, Sharad G., Garcia-Quiros, C., Garufi, Fabio, Gateley, B., Gaudio, Sergio, Gaur, Gurudatt, Gayathri, V., Gehrels, Neil, Gemme, Gianluca, Genin, Eric, Gennai, Alberto, George, Daniel, George, Jogy, Gergely, Laszlo, Germain, Vincent, Ghonge, Sudarshan, Ghosh, Abhirup, Ghosh, Archisman, Ghosh, Shaon, Giaime, Joe A., Giardina, K.D., Giazotto, Adalberto, Gill, Kiranjyot, Glover, Lamar, Goetz, Evan, Goetz, Ryan, Gomes, Sandra, Goncharov, Boris, González, Gabriela, Gonzalez Castro, J.M., Gopakumar, A., Gorodetsky, Michael L., Gossan, Sarah E., GOSSELIN, Matthieu, Gouaty, Romain, Grado, Aniello, Graef, Christian, Granata, Massimo, Grant, Alastair, Gras, Slawomir, Gray, Corey, Greco, Giuseppe, Green, Anna C., Gretarsson, Elizabeth M., Groot, Paul, Grote, Hartmut, Grunewald, Steffen, Gruning, Pierre, Guidi, Gianluca M., Guo, Xiangyu, Gupta, Anuradha, Gupta, Manojipr K., Gushwa, Kaitlin E., Gustafson, Eric K., Gustafson, R., Halim, O., Hall, Bernard R., Hall, Evan D., Hamilton, Eleanor Z., Hammond, Giles, Haney, Maria, Hanke, Manuela M., Hanks, Jonathan, Hanna, Chad, Hannam, Mark D., Hannuksela, Otto A., Hanson, Joe, Hardwick, Terra, Harms, Jan, Harry, Gregg M., Harry, Ian W., Hart, Martin J., Haster, C.-J., Haughian, Karen, Healy, James, Heidmann, Antoine, Heintze, Matthew C., Heitmann, Henrich, Hello, Patrice, Hemming, Gary, Hendry, Martin, Heng, I.S., Hennig, J., Heptonstall, Alastair W., Heurs, Michele, Hild, Stefan, Hinderer, Tanja, Hoak, Daniel, Hofman, David, Holt, Kathy, Holz, Daniel E., Hopkins, Paul, Horst, Christian, Hough, James, Houston, Ewan A., Howell, Eric J., Hreibi, A., Hu, Yiming M., Huerta, Eliu A., Huet, Dominique, Hughey, Brennan, Husa, Sascha, Huttner, Sabina H., Huynh-Dinh, T., Indik, Nathaniel, Inta, Ra, Intini, Giuseppe, Isa, Hafizah N., Isac, J.-M., Isi, Max, Iyer, Bala R., Izumi, Kiwamu, Jacqmin, Thibaut, Jani, Karan, Jaranowski, Piotr, Jawahar, Sharat, Jiménez-Forteza, F., Johnson, Warren W., Jones, D.I., Jones, Russell, Jonker, Reinier J.G., Ju, L., Junker, Jonas, Kalaghatgi, Chinmay V., Kalogera, Vassiliki, Kamai, Brittany, Kandhasamy, Shivaraj, Kang, Gungwon, Kanner, Jonah B., Kapadia, Shasvath J., Karki, Sudarshan, Karvinen, Kai S., Kasprzack, Marie, Katolik, Michael, Katsavounidis, Erik, Katzman, William, Kaufer, Steffen, Kawabe, Keita, Kéfélian, Fabien, Keitel, David, Kemball, Athol J., Kennedy, Ross, Kent, Christopher, Key, Joey S., Khalili, Farit Y., Khan, I., Khan, Sebastian, Khan, Ziauddin, Khazanov, Efim A., Kijbunchoo, Nutsinee, Kim, Chunglee, Kim, Jeongcho C., Kim, Kyungmin, Kim, Won, Kim, Whansun S., Kim, Y.-M., Kimbrell, Seth J., King, Eleanor J., King, Peter J., Kinley-Hanlon, M., Kirchhoff, Robin, Kissel, Jeffrey S., Kleybolte, Lisa, Klimenko, Sergei, Knowles, Tyler D., Koch, Philip, Koehlenbeck, Sina M., Koley, Soumen, Kondrashov, Veronica, Kontos, Antonios, Korobko, Mikhail, Korth, William Z., Kowalska, Izabela, Kozak, Dan B., Krämer, Christina, Kringel, Volker, Krishnan, Badri, Królak, Andrzej, Kuehn, Gerrit, Kumar, Prayush, Kumar, Rakesh, Kumar, Sumit, Kuo, L., Kutynia, Adam, Kwang, Shawn, Lackey, Benjamin D., Lai, K.H., Landry, Michael, Lang, Ryan N., Lange, Jacob, Lantz, Brian, Lanza, Robert K., Lartaux-Vollard, A., Lasky, Paul D., Laxen, Michael, Lazzarini, Albert, Lazzaro, Claudia, Leaci, Paola, Leavey, Sean, Lee, C.H., Lee, Hyunkyu K., Lee, H.M., Lee, Hyungwon W., Lee, K., Lehmann, Johannes, Lenon, Amber, Leonardi, Matteo, Leroy, Nicolas, Letendre, Nicolas, Levin, Yuri, Li, Tjonnie G.F., Linker, Seth D., Littenberg, Tyson B., Liu, J., Lo, R.K.L., Lockerbie, Nick A., London, Lionel T., Lord, Jaysin E., Lorenzini, Matteo, Loriette, Vincent, Lormand, Marc, Losurdo, Giovanni, Lough, James D., Lovelace, Geoffrey, Lück, Harald, Lumaca, Diana, Lundgren, Andrew P., Lynch, Ryan, Ma, Y., Macas, Ronaldas, Macfoy, Sean, Machenschalk, Bernd, Macinnis, M., Macleod, Duncan M., Magaña Hernandez, I., Magaña-Sandoval, F., Magaña Zertuche, L., Magee, Ryan M., Majorana, Ettore, Maksimovic, Ivan, Man, N., Mandic, Vuk, Mangano, Valentina, Mansell, Georgia L., Manske, Michael, Mantovani, Maddalena, Marchesoni, Fabio, Marion, Frederique, Márka, Szabolcs, Márka, Zsuzsanna, Markakis, Charalampos, Markosyan, Ashot S., Markowitz, Aaron, Maros, E., Marquina, Antonio, Martelli, Filippo, Martellini, Lionel, Martin, Ian W., Martin, Rodica M., Martynov, Denis V., Mason, Ken, Massera, Elena, Masserot, Alain, Massinger, Thomas J., Masso-Reid, M., Mastrogiovanni, Simone, Matas, Andrew, Matichard, Fabrice, Matone, Luca, Mavalvala, Nergis, Mazumder, Nairwita, McCarthy, R., Mcclelland, D.E., Mccormick, S., McCuller, L., McGuire, S.C., Mcintyre, G., Mciver, J., McManus, David 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Muratore, Martina, Murray, Peter G., Napier, Kate, Nardecchia, Ilaria, Naticchioni, Luca, Nayak, Rajesh K., Neilson, Joshua, Nelemans, Gijs, Nelson, Timothy J.N., Nery, Marina, Neunzert, Ansel, Nevin, Lydia, Newport, Jonathan M., Newton, Gavin, Ng, K.Y., Nguyen, Thanh T., Nichols, David, Nielsen, Alex B., Nissanke, Samaya, Nitz, Alex, Noack, Andreas, Nocera, Flavio, Nolting, David, North, Chris, Nuttall, Laura K., Oberling, Jason, O'Dea, G.D., Ogin, Greg H., Oh, John J., Oh, Sanghoon H., Ohme, Frank, Okada, Marcos A., Oliver, Miquel, Oppermann, Patrick, Oram, Richard J., O'Reilly, B., Ormiston, Rich, Ortega, Luis F., O'Shaughnessy, R., Ossokine, Serguei, Ottaway, David J., Overmier, Harry, Owen, Ben J., Pace, Alexander E., Page, Jessica, Page, Michael A., Pai, Archana, Pai, Siddhesh A., Palamos, Jordan R., Palashov, Oleg, Palomba, Cristiano, Pal-Singh, A., Pan, Howard, Pan, Huang-Wei, Pang, Belinda, Pang, P.T.H., Pankow, Chris, Pannarale, Francesco, Pant, Brijesh C., Paoletti, Federico, PAOLI, Andrea, Papa, Maria A., Parida, Abhishek, Parker, William, Pascucci, Daniela, Pasqualetti, Antonio, Passaquieti, Roberto, Passuello, Diego, Patil, M., Patricelli, Barbara, Pearlstone, Brynley L., Pedraza, Mike, Pedurand, Richard, Pekowsky, L., Pele, Arnaud, Penn, Steven, Perez, Carlos J., Perreca, Antonio, Perri, Leah M., Pfeiffer, Harald P., Phelps, Margot, Piccinni, Ornella J., Pichot, Mikhael, Piergiovanni, Francesco, Pierro, Vincenzo, Pillant, Gabriel, Pinard, Laurent, Pinto, Innocenzo M., Pirello, Marc, Pisarski, A., Pitkin, Matthew, Poe, Mark, Poggiani, Rosa, Popolizio, Pasquale, Porter, K., Post, Alexander, Powell, Jade, Prasad, Jayanti, Pratt, James W.W., Pratten, Geraint, Predoi, Valeriu, Prestegard, Tanner, Prijatelj, Mirko, Principe, Maria, Privitera, Stephen, Prodi, Giovanni A., Prokhorov, Leonid G., Puncken, Oliver, Punturo, Michele, Puppo, Paola, Pürrer, Michael, Qi, Hong, Quetschke, Volker, Quintero, Eric A., Quitzow-James, R., Raab, Fred J., Rabeling, 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Soumen, Kondrashov, Veronica, Kontos, Antonios, Korobko, Mikhail, Korth, William Z., Kowalska, Izabela, Kozak, Dan B., Krämer, Christina, Kringel, Volker, Krishnan, Badri, Królak, Andrzej, Kuehn, Gerrit, Kumar, Prayush, Kumar, Rakesh, Kumar, Sumit, Kuo, L., Kutynia, Adam, Kwang, Shawn, Lackey, Benjamin D., Lai, K.H., Landry, Michael, Lang, Ryan N., Lange, Jacob, Lantz, Brian, Lanza, Robert K., Lartaux-Vollard, A., Lasky, Paul D., Laxen, Michael, Lazzarini, Albert, Lazzaro, Claudia, Leaci, Paola, Leavey, Sean, Lee, C.H., Lee, Hyunkyu K., Lee, H.M., Lee, Hyungwon W., Lee, K., Lehmann, Johannes, Lenon, Amber, Leonardi, Matteo, Leroy, Nicolas, Letendre, Nicolas, Levin, Yuri, Li, Tjonnie G.F., Linker, Seth D., Littenberg, Tyson B., Liu, J., Lo, R.K.L., Lockerbie, Nick A., London, Lionel T., Lord, Jaysin E., Lorenzini, Matteo, Loriette, Vincent, Lormand, Marc, Losurdo, Giovanni, Lough, James D., Lovelace, Geoffrey, Lück, Harald, Lumaca, Diana, Lundgren, Andrew P., Lynch, Ryan, Ma, Y., Macas, Ronaldas, Macfoy, Sean, Machenschalk, Bernd, Macinnis, M., Macleod, Duncan M., Magaña Hernandez, I., Magaña-Sandoval, F., Magaña Zertuche, L., Magee, Ryan M., Majorana, Ettore, Maksimovic, Ivan, Man, N., Mandic, Vuk, Mangano, Valentina, Mansell, Georgia L., Manske, Michael, Mantovani, Maddalena, Marchesoni, Fabio, Marion, Frederique, Márka, Szabolcs, Márka, Zsuzsanna, Markakis, Charalampos, Markosyan, Ashot S., Markowitz, Aaron, Maros, E., Marquina, Antonio, Martelli, Filippo, Martellini, Lionel, Martin, Ian W., Martin, Rodica M., Martynov, Denis V., Mason, Ken, Massera, Elena, Masserot, Alain, Massinger, Thomas J., Masso-Reid, M., Mastrogiovanni, Simone, Matas, Andrew, Matichard, Fabrice, Matone, Luca, Mavalvala, Nergis, Mazumder, Nairwita, McCarthy, R., Mcclelland, D.E., Mccormick, S., McCuller, L., McGuire, S.C., Mcintyre, G., Mciver, J., McManus, David J., McNeill, L., McRae, T., McWilliams, S.T., Meacher, Duncan, Meadors, Grant D., Mehmet, Moritz, Meidam, Jeroen, Mejuto-Villa, E., Melatos, Andrew, Mendell, Gregory, Mercer, R.A., Merilh, Edmond L., Merzougui, Mourad, Meshkov, Syd, Messenger, Chris, Messick, Cody, Metzdorff, R., Meyers, Patrick M., Miao, Haixing, Michel, Christophe, Middleton, Hannah, Mikhailov, Eugeniy E., Milano, Leopoldo, Miller, Andrewlawrence L., Miller, Brandon B., Miller, John, Millhouse, Meg, Milovich-Goff, M.C., Minazzoli, Olivier, Minenkov, Yuri, Ming, Jing, Mishra, Chandra, Mitra, Sanjit, Mitrofanov, Valery P., Mitselmakher, Guenakh, Mittleman, Richard, Moffa, Donald, Moggi, Andrea, Mogushi, Kentaro, Mohan, Martin, Mohapatra, S.R.P., Montani, Matteo, Moore, Christopher J., Moraru, Dan, Moreno, Gerardo, Morriss, Sean R., Mours, Benoit, Mow-Lowry, C.M., Mueller, Guido, Muir, Alistair W., Mukherjee, Arunava, Mukherjee, Debnandini, Mukherjee, Soma, Mukund, Nikhil, Mullavey, Adam, Munch, Jesper, Muñiz, Erik A., Muratore, Martina, Murray, Peter G., Napier, Kate, Nardecchia, Ilaria, Naticchioni, Luca, Nayak, Rajesh K., Neilson, Joshua, Nelemans, Gijs, Nelson, Timothy J.N., Nery, Marina, Neunzert, Ansel, Nevin, Lydia, Newport, Jonathan M., Newton, Gavin, Ng, K.Y., Nguyen, Thanh T., Nichols, David, Nielsen, Alex B., Nissanke, Samaya, Nitz, Alex, Noack, Andreas, Nocera, Flavio, Nolting, David, North, Chris, Nuttall, Laura K., Oberling, Jason, O'Dea, G.D., Ogin, Greg H., Oh, John J., Oh, Sanghoon H., Ohme, Frank, Okada, Marcos A., Oliver, Miquel, Oppermann, Patrick, Oram, Richard J., O'Reilly, B., Ormiston, Rich, Ortega, Luis F., O'Shaughnessy, R., Ossokine, Serguei, Ottaway, David J., Overmier, Harry, Owen, Ben J., Pace, Alexander E., Page, Jessica, Page, Michael A., Pai, Archana, Pai, Siddhesh A., Palamos, Jordan R., Palashov, Oleg, Palomba, Cristiano, Pal-Singh, A., Pan, Howard, Pan, Huang-Wei, Pang, Belinda, Pang, P.T.H., Pankow, Chris, Pannarale, Francesco, Pant, Brijesh C., Paoletti, Federico, PAOLI, Andrea, Papa, Maria A., Parida, Abhishek, Parker, William, Pascucci, Daniela, Pasqualetti, Antonio, Passaquieti, Roberto, Passuello, Diego, Patil, M., Patricelli, Barbara, Pearlstone, Brynley L., Pedraza, Mike, Pedurand, Richard, Pekowsky, L., Pele, Arnaud, Penn, Steven, Perez, Carlos J., Perreca, Antonio, Perri, Leah M., Pfeiffer, Harald P., Phelps, Margot, Piccinni, Ornella J., Pichot, Mikhael, Piergiovanni, Francesco, Pierro, Vincenzo, Pillant, Gabriel, Pinard, Laurent, Pinto, Innocenzo M., Pirello, Marc, Pisarski, A., Pitkin, Matthew, Poe, Mark, Poggiani, Rosa, Popolizio, Pasquale, Porter, K., Post, Alexander, Powell, Jade, Prasad, Jayanti, Pratt, James W.W., Pratten, Geraint, Predoi, Valeriu, Prestegard, Tanner, Prijatelj, Mirko, Principe, Maria, Privitera, Stephen, Prodi, Giovanni A., Prokhorov, Leonid G., Puncken, Oliver, Punturo, Michele, Puppo, Paola, Pürrer, Michael, Qi, Hong, Quetschke, Volker, Quintero, Eric A., Quitzow-James, R., Raab, Fred J., Rabeling, David S., Radkins, Hugh, Raffai, Peter, Raja, Sendhil, Rajan, C., Rajbhandari, Binod, Rakhmanov, Malik, Ramirez, Karla E., Ramos-Buades, A., Rapagnani, Piero, Raymond, Vivien, Razzano, Massimiliano, Read, Jocelyn, Regimbau, Tania, Rei, Luca, Reid, Stuart, Reitze, David H., Ren, Wei, Reyes, Steven D., Ricci, Fulvio, Ricker, Paul M., Rieger, Sascha, Riles, Keith, Rizzo, Monica, Robertson, Norna A., Robie, Raymond, Robinet, Florent, Rocchi, Alessio, ROLLAND, Loic, Rollins, Jameson G., Roma, Vincent J., Romano, Rocco, Romel, Chandra L., Romie, Janeen H., Rosińska, Dorota, Ross, Michael P., Rowan, Sheila, Rüdiger, Albrecht, Ruggi, Paolo, Rutins, Guntis, Ryan, Kyle, Sachdev, Surabhi, Sadecki, Travis, Sadeghian, Laleh, Sakellariadou, Mairi, Salconi, Livio, Saleem, Muhammed, Salemi, Francesco, Samajdar, Anuradha, Sammut, Letizia, Sampson, Laura M., Sanchez, Eduardo J., Sanchez, Luis E., Sanchis-Gual, N., Sandberg, Vernon, Sanders, Jaclyn R., Sassolas, Benoit, Saulson, Peter R., Sauter, Orion, Savage, Richard L., Sawadsky, Andreas, Schale, Paul, Scheel, Mark, Scheuer, Jacob, Schmidt, Justus, Schmidt, Patricia, Schnabel, Roman, Schofield, Robert M.S., Schönbeck, Axel, Schreiber, Emil, Schuette, Dirk, Schulte, Bernd W., Schutz, Bernard F., Schwalbe, Sophia G., Scott, Jamie, Scott, Susan M., Seidel, E., Sellers, Danny, Sengupta, Anand S., Sentenac, Daniel, Sequino, Valeria, Sergeev, Alexander, Shaddock, Daniel A., Shaffer, Thomas J., Shah, Ankur A., Shahriar, M.S., Shaner, Morgan B., Shao, Lijing, Shapiro, Brett, Shawhan, Peter, Sheperd, Alec, Shoemaker, David H., Shoemaker, Deirdre M., Siellez, Karelle, Siemens, Xavier, Sieniawska, Magdalena, Sigg, Daniel, Silva, Allan D., Singer, Leo P., Singh, Avneet, Singhal, Akshat, Sintes, Alicia M., Slagmolen, Bram J.J., Smith, Bryan, Smith, Joshua R., Smith, Rory J.E., Somala, Surendranadh, Son, Edwin J., Sonnenberg, Jacob A., Sorazu, Borja, Sorrentino, Fiodor, Souradeep, Tarun, Spencer, Andrew P., Srivastava, Amit K., Staats, Kai, Staley, Alexan, Steinke, Michael, Steinlechner, Jessica, Steinlechner, Sebastian, Steinmeyer, Daniel, Stevenson, Simon P., Stone, Robert, Stops, David J., Strain, Ken A., Stratta, Giulia, Strigin, Sergey E., Strunk, A., Sturani, Riccardo, Stuver, Amber L., Summerscales, Tiffany Z., Sun, Ling, Sunil, S., Suresh, Jishnu, Sutton, Patrick J., Swinkels, Bas L., Szczepańczyk, Marek J., Tacca, Matteo, Tait, Simon C., Talbot, Colm, Talukder, Dipongkar, Tanner, David B., Tao, Duo, Tápai, Marton, Taracchini, Andrea, Tasson, Jay D., Taylor, Jordan A., Taylor, Robert, Tewari, Shivam V., Theeg, Thomas, Thies, Fabian, Thomas, E.G., Thomas, Michael, Thomas, Patrick, Thorne, Keith A., Thrane, Eric, Tiwari, Shubhanshu, Tiwari, Vaibhav, Tokmakov, Kirill V., Toland, Karl, Tonelli, Mauro, Tornasi, Zeno, Torres-Forné, A., Torrie, Calum I., Töyrä, Daniel, Travasso, Flavio, Traylor, Gary, Trinastic, Jonathan, Tringali, Maria C., Trozzo, Lucia, Tsang, K.W., Tse, Maggie, Tso, Rhondale, Tsukada, Leo, Tsuna, Daichi, Tuyenbayev, Darkhan, Ueno, Koh, Ugolini, Dennis, Unnikrishnan, Cs S., Urban, Alexander L., Usman, Samantha A., Vahlbruch, Henning, Vajente, Gabriele, Valdes, Guillermo, Van Bakel, N., van Beuzekom, Martin, Van Den Brand, J.F.J., Van Den Broeck, C., Vander-Hyde, D.C., van der Schaaf, L., van Heijningen, J.V., van Veggel, A.A., Vardaro, Marco, Varma, Vijay, Vass, Steve, Vasúth, Matyas, Vecchio, Alberto, Vedovato, Gabriele, Veitch, John, Veitch, Peter J., Venkateswara, Krishna, Venugopalan, Gautam, Verkindt, Didier, Vetrano, Flavio, Viceré, Andrea, Viets, Aaron D., Vinciguerra, Serena, Vine, David J., Vinet, J.-Y., Vitale, Salvatore, Vo, Thomas, Vocca, Helios, Vorvick, Cheryl, Vyatchanin, Sergey P., Wade, Andrew R., Wade, Leslie E., Wade, Madeline, Walet, Rob, Walker, Marissa, Wallace, Larry, Walsh, Sinead, Wang, Gang, Wang, Haoyu, Wang, Jonathan Z., Wang, Wenhui H., Wang, Yifan F., Ward, Robert L., Warner, Jim, Was, Michal, Watchi, Jennifer, Weaver, Betsy, Wei, L.-W., Weinert, Michael, Weinstein, Alan J., Weiss, Rainer, Wen, Linqing, Wessel, Erik K., Weßels, Peter, Westerweck, Julian, Westphal, Tobias, Wette, Karl, Whelan, John T., Whiting, Bernard F., Whittle, Chris, Wilken, D., Williams, Daniel, Williams, Roy D., Williamson, Andrew R., Willis, Joshua L., Willke, Benno, Wimmer, Maximilian H., Winkler, Walter, Wipf, Christopher C., Wittel, Holger, Woan, Graham, Woehler, Janis, Wofford, Jared, Wong, W.K., Worden, John, Wright, Jennifer L., Wu, David S., Wysocki, Daniel M., Xiao, Sophia, Yamamoto, Hiro, Yancey, Cregg C., Yang, Le, Yap, M.J., Yazback, Maher, Yu, Hang, Yu, Haocun, Yvert, Michel, Zadrożny, Adam, Zanolin, Michele, Zelenova, Tatiana, Zendri, J.-P., Zevin, Michael, Zhang, Liyuan, Zhang, Mi, Zhang, Teng, Zhang, Y.-H., Zhao, Chunnong, Zhou, Minchuan, Zhou, Zifan, Zhu, Sylvia J., Zhu, Xingjiang J., Zucker, Michael E., and Zweizig, J.
Abstract: We report on a new all-sky search for periodic gravitational waves in the frequency band 475-2000 Hz and with a frequency time derivative in the range of [-1.0,+0.1]×10-8 Hz/s. Potential signals could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our Galaxy. This search uses the data from Advanced LIGO's first observational run O1. No gravitational-wave signals were observed, and upper limits were placed on their strengths. For completeness, results from the separately published low-frequency search 20-475 Hz are included as well. Our lowest upper limit on worst-case (linearly polarized) strain amplitude h0 is ∼4×10-25 near 170 Hz, while at the high end of our frequency range, we achieve a worst-case upper limit of 1.3×10-24. For a circularly polarized source (most favorable orientation), the smallest upper limit obtained is ∼1.5×10-25. © 2018 American Physical Society.
Published: 2018

27. Development of KAGRA Algorithmic Library (KAGALI)

Author: Oohara, Ken’ichi, primary, Ueno, Koh, additional, Yuzurihara, Hirotaka, additional, Itoh, Yosuke, additional, Takahasi, Hirotaka, additional, Arima, Tsukasa, additional, Eda, Kazunari, additional, Fujii, Yoshinori, additional, Hayama, Kazuhiro, additional, Hiranuma, Yuta, additional, Hirobayashi, Shigeki, additional, Kanda, Nobuyuki, additional, Kaneyama, Masato, additional, Kim, Jeongcho, additional, Kim, Chunglee, additional, Lee, Hyung Won, additional, Mano, Shuhei, additional, Miyake, Kyohei, additional, Miyamoto, Akinobu, additional, Nakanishi, Yuta, additional, Ohishi, Naoko, additional, Nakano, Masaya, additional, Nakao, Hayato, additional, Narikawa, Tatsuya, additional, Sakai, Kazuki, additional, Sasaki, Yukitsugu, additional, Shoda, Ayaka, additional, Suwabe, Hiroto, additional, Tagoshi, Hideyuki, additional, Tanaka, Kazuyuki, additional, Ueki, Satoshi, additional, Wakamatsu, Takeshi, additional, Yamamoto, Takahiro, additional, Yokoyama, Jun’ichi, additional, and Yokozawa, Takaaki, additional
Published: 2017
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28. time–frequency analysis of gravitational wave signals with non-harmonic analysis.

Author: Yanagisawa, Kenta, Jia, Dongbao, Hirobayashi, Shigeki, Uchikata, Nami, Narikawa, Tatsuya, Ueno, Koh, Takahashi, Hirotaka, and Tagoshi, Hideyuki
Subjects: HARMONIC analysis (Mathematics), GRAVITATIONAL waves, RANDOM noise theory, FREQUENCY modulation transmitters, BINARY black holes
Abstract: We apply non-harmonic analysis (NHA) to analyze gravitational wave signals from compact binary coalescences. After investigating the general properties of NHA by using several test signals with amplitude and frequency modulation, we analyze gravitational wave signals from the inspiraling of compact binary coalescences. We find that the time–frequency property of the signal can be reproduced accurately. We analyze the signals from inspiraling binary black holes injected into simulated Gaussian noise. We find that we can identify the signal even if the signal-to-noise ratio in the sense of a matched filter is as low as 10. We investigate the accuracy of the instantaneous amplitude and frequency of the signal recovered with NHA. We analyze gravitational wave events detected by LIGO and Virgo, and find that gravitational wave signals with strong amplitude like GW150914 can be shown clearly on the time–frequency map by NHA. We also find that even in the case of a low-amplitude signal like GW170817, the signal can be clearly seen by choosing an appropriate window size that depends on the frequency band. [ABSTRACT FROM AUTHOR]
Published: 2019
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29. Detectability of bigravity with graviton oscillations using gravitational wave observations

Author: Narikawa, Tatsuya, primary, Ueno, Koh, additional, Tagoshi, Hideyuki, additional, Tanaka, Takahiro, additional, Kanda, Nobuyuki, additional, and Nakamura, Takashi, additional
Published: 2015
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30. TREATMENT FOR NEWLY DIAGNOSED STAGE D2 PROSTATIC CARCINOMA WITH HORMONAL THERAPY ALONE, OR CHEMOTHERAPY AGENTS IN COMBINATION WITH HORMONES

Author: Fujii, Akio, primary, Oka, Nobutoshi, additional, Miyasaki, Shigenori, additional, Higuchi, Akihiro, additional, Tomioka, Osamu, additional, Morishita, Shin-ichi, additional, Yamanaka, Kunihito, additional, Itoh, Noboru, additional, Okamoto, Yasuyuki, additional, Tanaka, Hiroyuki, additional, Yasuno, Hirohiko, additional, Okamoto, Masayuki, additional, Izumi, Takehiro, additional, Yamada, Yuji, additional, Matsushita, Osami, additional, Iwamoto, Takahiro, additional, Nakanishi, Tateo, additional, Ueno, Koh-ichi, additional, and Nakamura, Ichiro, additional
Published: 1991
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31. Automating the Inclusion of Subthreshold Signal-to-Noise Ratios for Rapid Gravitational-Wave Localization

Author: Messick, Cody, Sachdev, Surabhi, Cannon, Kipp, Caudill, Sarah, Chan, Chiwai, Creighton, Jolien D. E., Everett, Ryan, Ewing, Becca, Fong, Heather, Godwin, Patrick, Hanna, Chad, Huxford, Rachael, Kapadia, Shasvath, Li, Alvin K. Y., Lo, Rico K. L., Magee, Ryan, Meacher, Duncan, Mohite, Siddharth R., Mukherjee, Debnandini, Nishizawa, Atsushi, Ohta, Hiroaki, Pace, Alexander, Reza, Amit, Shikauchi, Minori, Singer, Leo, Singh, Divya, Sk, Javed Rana, Tsukada, Leo, Tsuna, Daichi, Tsutsui, Takuya, Ueno, Koh, and Aaron Zimmerman
Subjects: Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract: The accurate localization of gravitational-wave (GW) events in low-latency is a crucial element in the search for further multimessenger signals from these cataclysmic events. The localization of these events in low-latency uses signal-to-noise ratio (SNR) time-series from matched-filtered searches which identify candidate events. Here we report on an improvement to the GstLAL-based inspiral pipeline, the low-latency pipeline that identified GW170817 and GW190425, which automates the use of SNRs from all detectors in the network in rapid localization of GW events. This improvement was incorporated into the detection pipeline prior to the recent third observing run of the Advanced LIGO and Advanced Virgo detector network. Previously for this pipeline, manual intervention was required to use SNRs from all detectors if a candidate GW event was below an SNR threshold for any detector in the network. The use of SNRs from subthreshold events can meaningfully decrease the area of the 90% confidence region estimated by rapid localization. To demonstrate this, we present a study of the simulated detections of $\mathcal{O}(2\times10^4)$ binary neutron stars using a network mirroring the second observational run of the Advanced LIGO and Virgo detectors. When incorporating subthreshold SNRs in rapid localization, we find that the fraction of events that can be localized down to $100~\mathrm{deg}^2$ or smaller increases by a factor 1.18.

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31 results on '"Ueno, Koh"'

1. Searching for asymmetric and heavily precessing Binary Black Holes in the gravitational wave data from the LIGO and Virgo third Observing Run

2. Searching for gravitational-wave signals from precessing black hole binaries with the GstLAL pipeline

3. When to Point Your Telescopes: Gravitational Wave Trigger Classification for Real-Time Multi-Messenger Followup Observations

4. Improved ranking statistics of the GstLAL inspiral search for compact binary coalescences

5. Performance of the low-latency GstLAL inspiral search towards LIGO, Virgo, and KAGRA's fourth observing run

6. Template bank for compact binary mergers in the fourth observing run of Advanced LIGO, Advanced Virgo, and KAGRA

7. A binary tree approach to template placement for searches for gravitational waves from compact binary mergers

8. Metric Assisted Stochastic Sampling (MASS) search for gravitational waves from binary black hole mergers

9. Automating the Inclusion of Subthreshold Signal-to-Noise Ratios for Rapid Gravitational-Wave Localization

10. Incorporation of Statistical Data Quality Information into the GstLAL Search Analysis

11. GstLAL: A software framework for gravitational wave discovery

12. Improving the background estimation technique in the GstLAL inspiral pipeline with the time-reversed template bank

13. An early warning system for electromagnetic follow-up of gravitational-wave events

14. Detectability of bigravity with graviton oscillations using gravitational wave observations

15. Binary tree approach to template placement for searches for gravitational waves from compact binary mergers

16. Improved ranking statistics of the GstLAL inspiral search for compact binary coalescences

17. Noise subtraction from KAGRA O3GK data using Independent Component Analysis

18. Metric assisted stochastic sampling search for gravitational waves from binary black hole mergers

19. The Current Status and Future Prospects of KAGRA, the Large-Scale Cryogenic Gravitational Wave Telescope Built in the Kamioka Underground

20. GstLAL: A software framework for gravitational wave discovery

21. GstLAL: A software framework for gravitational wave discovery

22. GstLAL: A software framework for gravitational wave discovery

23. An Early-warning System for Electromagnetic Follow-up of Gravitational-wave Events

24. An Early-warning System for Electromagnetic Follow-up of Gravitational-wave Events

25. A time–frequency analysis of gravitational wave signals with non-harmonic analysis

26. Full band all-sky search for periodic gravitational waves in the O1 LIGO data

27. Development of KAGRA Algorithmic Library (KAGALI)

28. time–frequency analysis of gravitational wave signals with non-harmonic analysis.

29. Detectability of bigravity with graviton oscillations using gravitational wave observations

30. TREATMENT FOR NEWLY DIAGNOSED STAGE D2 PROSTATIC CARCINOMA WITH HORMONAL THERAPY ALONE, OR CHEMOTHERAPY AGENTS IN COMBINATION WITH HORMONES

31. Automating the Inclusion of Subthreshold Signal-to-Noise Ratios for Rapid Gravitational-Wave Localization

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31 results on '"Ueno, Koh"'

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