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Start Over Author "Wang, J. -B." Journal monthly notices of the royal astronomical society
26 results on '"Wang, J. -B."'

1. Searching for gravitational-wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array

Author

Yonemaru, N, Kuroyanagi, S, Hobbs, G, Takahashi, K, Zhu, X-J, Coles, WA, Dai, S, Howard, E, Manchester, R, Reardon, D, Russell, C, Shannon, RM, Thyagarajan, N, Spiewak, R, and Wang, J-B

Subjects
gravitational waves, methods: data analysis, pulsars: general, Astronomical and Space Sciences, Astronomy & Astrophysics
Abstract

ABSTRACT Cosmic strings are potential gravitational-wave (GW) sources that can be probed by pulsar timing arrays (PTAs). In this work we develop a detection algorithm for a GW burst from a cusp on a cosmic string, and apply it to Parkes PTA data. We find four events with a false alarm probability less than 1 per cent. However further investigation shows that all of these are likely to be spurious. As there are no convincing detections we place upper limits on the GW amplitude for different event durations. From these bounds we place limits on the cosmic string tension of Gμ ∼ 10−5, and highlight that this bound is independent from those obtained using other techniques. We discuss the physical implications of our results and the prospect of probing cosmic strings in the era of Square Kilometre Array.

Published
2020

2. From spin noise to systematics: stochastic processes in the first International Pulsar Timing Array data release

Author

Lentati, L, Shannon, RM, Coles, WA, Verbiest, JPW, van Haasteren, R, Ellis, JA, Caballero, RN, Manchester, RN, Arzoumanian, Z, Babak, S, Bassa, CG, Bhat, NDR, Brem, P, Burgay, M, Burke-Spolaor, S, Champion, D, Chatterjee, S, Cognard, I, Cordes, JM, Dai, S, Demorest, P, Desvignes, G, Dolch, T, Ferdman, RD, Fonseca, E, Gair, JR, Gonzalez, ME, Graikou, E, Guillemot, L, Hessels, JWT, Hobbs, G, Janssen, GH, Jones, G, Karuppusamy, R, Keith, M, Kerr, M, Kramer, M, Lam, MT, Lasky, PD, Lassus, A, Lazarus, P, Lazio, TJW, Lee, KJ, Levin, L, Liu, K, Lynch, RS, Madison, DR, McKee, J, McLaughlin, M, McWilliams, ST, Mingarelli, CMF, Nice, DJ, Osłowski, S, Pennucci, TT, Perera, BBP, Perrodin, D, Petiteau, A, Possenti, A, Ransom, SM, Reardon, D, Rosado, PA, Sanidas, SA, Sesana, A, Shaifullah, G, Siemens, X, Smits, R, Stairs, I, Stappers, B, Stinebring, DR, Stovall, K, Swiggum, J, Taylor, SR, Theureau, G, Tiburzi, C, Toomey, L, Vallisneri, M, van Straten, W, Vecchio, A, Wang, J-B, Wang, Y, You, XP, Zhu, WW, and Zhu, X-J

Subjects
methods: data analysis, pulsars: general, Astronomical and Space Sciences, Astronomy & Astrophysics
Abstract

We analyse the stochastic properties of the 49 pulsars that comprise the first International Pulsar Timing Array (IPTA) data release. We use Bayesian methodology, performing model selection to determine the optimal description of the stochastic signals present in each pulsar. In addition to spin-noise and dispersion-measure (DM) variations, these models can include timing noise unique to a single observing system, or frequency band. We show the improved radio-frequency coverage and presence of overlapping data from different observing systems in the IPTA data set enables us to separate both system and band-dependent effects with much greater efficacy than in the individual pulsar timing array (PTA) data sets. For example, we show that PSR J1643-1224 has, in addition to DM variations, significant band-dependent noise that is coherent between PTAs which we interpret as coming from time-variable scattering or refraction in the ionized interstellar medium. Failing to model these different contributions appropriately can dramatically alter the astrophysical interpretation of the stochastic signals observed in the residuals. In some cases, the spectral exponent of the spin-noise signal can vary from 1.6 to 4 depending upon the model, which has direct implications for the long-term sensitivity of the pulsar to a stochastic gravitational-wave (GW) background. By using a more appropriate model, however, we can greatly improve a pulsar's sensitivity to GWs. For example, including system and band-dependent signals in the PSR J0437-4715 data set improves the upper limit on a fiducial GW background by ~60 per cent compared to a model that includes DM variations and spin-noise only.

Published
2016

3. A study of multifrequency polarization pulse profiles of millisecond pulsars

Author

Dai, S, Hobbs, G, Manchester, RN, Kerr, M, Shannon, RM, van Straten, W, Mata, A, Bailes, M, Bhat, NDR, Burke-Spolaor, S, Coles, WA, Johnston, S, Keith, MJ, Levin, Y, Osłowski, S, Reardon, D, Ravi, V, Sarkissian, JM, Tiburzi, C, Toomey, L, Wang, HG, Wang, J-B, Wen, L, Xu, RX, Yan, WM, and Zhu, X-J

Subjects
polarization, radiation mechanisms: non-thermal, pulsars: general, radio continuum: general, Astronomical and Space Sciences, Astronomy & Astrophysics
Published
2015

4. An all-sky search for continuous gravitational waves in the Parkes Pulsar Timing Array data set

Author

Zhu, X-J, Hobbs, G, Wen, L, Coles, WA, Wang, J-B, Shannon, RM, Manchester, RN, Bailes, M, Bhat, NDR, Burke-Spolaor, S, Dai, S, Keith, MJ, Kerr, M, Levin, Y, Madison, DR, Osłowski, S, Ravi, V, Toomey, L, and van Straten, W

Subjects
gravitational waves, methods: data analysis, pulsars: general, galaxies: evolution, Astronomical and Space Sciences, Astronomy & Astrophysics
Abstract

We present results of an all-sky search in the Parkes Pulsar Timing Array (PPTA) Data Release 1 data set for continuous gravitational waves (GWs) in the frequency range from 5 × 10-9 to 2 × 10-7 Hz. Such signals could be produced by individual supermassive binary black hole systems in the early stage of coalescence.We phase up the pulsar timing array data set to form, for each position on the sky, two data streams that correspond to the twoGWpolarizations and then carry out an optimal search for GW signals on these data streams. Since no statistically significant GWs were detected, we place upper limits on the intrinsic GW strain amplitude h0 for a range of GW frequencies. For example, at 10-8 Hz our analysis has excluded with 95 per cent confidence the presence of signals with h0 ≥ 1.7 × 10-14. Our new limits are about a factor of 4 more stringent than those of Yardley et al. based on an earlier PPTA data set and a factor of 2 better than those reported in the recent Arzoumanian et al. paper.We also present PPTA directional sensitivity curves and find that for the most sensitive region on the sky, the current data set is sensitive to GWs from circular supermassive binary black holes with chirp masses of 109M⊙ out to a luminosity distance of about 100 Mpc. Finally, we set an upper limit of 4 × 10-3 Mpc-3 Gyr-1 at 95 per cent confidence on the coalescence rate of nearby (z ≲ 0.1) supermassive binary black holes in circular orbits with chirp masses of 1010M⊙.

Published
2014

5. Limitations in timing precision due to single-pulse shape variability in millisecond pulsars

Author

Shannon, RM, Osłowski, S, Dai, S, Bailes, M, Hobbs, G, Manchester, RN, van Straten, W, Raithel, CA, Ravi, V, Toomey, L, Bhat, NDR, Burke-Spolaor, S, Coles, WA, Keith, MJ, Kerr, M, Levin, Y, Sarkissian, JM, Wang, J-B, Wen, L, and Zhu, X-J

Subjects
methods: data analysis, stars: neutron, pulsars: general, Astronomical and Space Sciences, Astronomy & Astrophysics
Abstract

High-sensitivity radio-frequency observations of millisecond pulsars usually show stochastic, broad-band, pulse-shape variations intrinsic to the pulsar emission process. These variations induce jitter noise in pulsar timing observations; understanding the properties of this noise is of particular importance for the effort to detect gravitational waves with pulsar timing arrays. We assess the short-term profile and timing stability of 22 millisecond pulsars that are part of the Parkes Pulsar Timing Array sample by examining intraobservation arrival time variability and single-pulse phenomenology. In 7 of the 22 pulsars, in the band centred at approximately 1400 MHz, we find that the brightest observations are limited by intrinsic jitter. We find consistent results, either detections or upper limits, for jitter noise in other frequency bands. PSR J1909-3744 shows the lowest levels of jitter noise, which we estimate to contribute ~10 ns root mean square error to the arrival times for hour-duration observations. Larger levels of jitter noise are found in pulsars with wider pulses and distributions of pulse intensities. The jitter noise in PSR J0437-4715 decorrelates over a bandwidth of ∼2 GHz. We show that the uncertainties associated with timing pulsar models can be improved by including physically motivated jitter uncertainties. Pulse-shape variations will limit the timing precision at future, more sensitive, telescopes; it is imperative to account for this noise when designing instrumentation and timing campaigns for these facilities. © 2014 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.

Published
2014

6. Follow-up timing of 24 pulsars discovered in commensal radio astronomy FAST survey

Author

Wu, Q D, primary, Yuan, J P, additional, Wang, N, additional, Li, D, additional, Wang, P, additional, Xue, M Y, additional, Zhu, W W, additional, Miao, C C, additional, Yan, W M, additional, Wang, J B, additional, Yao, J M, additional, Wang, S Q, additional, Sun, S N, additional, Kou, F F, additional, Tu, Z Y, additional, Xie, J T, additional, Pan, Z C, additional, Zhao, D, additional, Chen, Y T, additional, Dang, S J, additional, Feng, Y, additional, Liu, Z J, additional, Miao, X L, additional, Meng, L Q, additional, Yuan, M, additional, Niu, C H, additional, Niu, J R, additional, Qian, L, additional, Wang, S, additional, Xie, X Y, additional, Xiao, Y F, additional, Yue, Y L, additional, You, S P, additional, Yu, X H, additional, Zhao, R S, additional, Zhang, L, additional, Yuen, R, additional, Wen, Z G, additional, and Tedila, H M, additional

Published
2023
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7. Arecibo and FAST timing follow-up of 12 millisecond pulsars discovered in Commensal Radio Astronomy FAST Survey

Author

Miao, C C, primary, Zhu, W W, additional, Li, D, additional, Freire, P C C, additional, Niu, J R, additional, Wang, P, additional, Yuan, J P, additional, Xue, M Y, additional, Cameron, A D, additional, Champion, D J, additional, Cruces, M, additional, Chen, Y T, additional, Chi, M M, additional, Cheng, X F, additional, Dang, S J, additional, Ding, M F, additional, Feng, Y, additional, Gan, Z Y, additional, Hobbs, G, additional, Kramer, M, additional, Liu, Z J, additional, Li, Y X, additional, Luo, Z K, additional, Miao, X L, additional, Meng, L Q, additional, Niu, C H, additional, Pan, Z C, additional, Qian, L, additional, Sun, Z Y, additional, Wang, N, additional, Wang, S Q, additional, Wang, J B, additional, Wu, Q D, additional, Wang, Y B, additional, Wang, C J, additional, Wang, H F, additional, Wang, S, additional, Xie, X Y, additional, Xie, M, additional, Xiao, Y F, additional, Yuan, M, additional, Yue, Y L, additional, Yao, J M, additional, Yan, W M, additional, You, S P, additional, Yu, X H, additional, Zhao, D, additional, Zhao, R S, additional, and Zhang, L, additional

Published
2022
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8. Detection of strong scattering close to the eclipse region of PSR B1957+20

Author

Bai, J T, primary, Dai, S, additional, Zhi, Q J, additional, Coles, W A, additional, Li, D, additional, Zhu, W W, additional, Hobbs, G, additional, Qiao, G J, additional, Wang, N, additional, Yuan, J P, additional, Filipović, M D, additional, Wang, J B, additional, Pan, Z C, additional, Shang, L H, additional, Dang, S J, additional, Wang, S Q, additional, and Miao, C C, additional

Published
2022
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9. The International Pulsar Timing Array second data release: Search for an isotropic gravitational wave background

Author

Antoniadis, J, primary, Arzoumanian, Z, additional, Babak, S, additional, Bailes, M, additional, Bak Nielsen, A-S, additional, Baker, P T, additional, Bassa, C G, additional, Bécsy, B, additional, Berthereau, A, additional, Bonetti, M, additional, Brazier, A, additional, Brook, P R, additional, Burgay, M, additional, Burke-Spolaor, S, additional, Caballero, R N, additional, Casey-Clyde, J A, additional, Chalumeau, A, additional, Champion, D J, additional, Charisi, M, additional, Chatterjee, S, additional, Chen, S, additional, Cognard, I, additional, Cordes, J M, additional, Cornish, N J, additional, Crawford, F, additional, Cromartie, H T, additional, Crowter, K, additional, Dai, S, additional, DeCesar, M E, additional, Demorest, P B, additional, Desvignes, G, additional, Dolch, T, additional, Drachler, B, additional, Falxa, M, additional, Ferrara, E C, additional, Fiore, W, additional, Fonseca, E, additional, Gair, J R, additional, Garver-Daniels, N, additional, Goncharov, B, additional, Good, D C, additional, Graikou, E, additional, Guillemot, L, additional, Guo, Y J, additional, Hazboun, J S, additional, Hobbs, G, additional, Hu, H, additional, Islo, K, additional, Janssen, G H, additional, Jennings, R J, additional, Johnson, A D, additional, Jones, M L, additional, Kaiser, A R, additional, Kaplan, D L, additional, Karuppusamy, R, additional, Keith, M J, additional, Kelley, L Z, additional, Kerr, M, additional, Key, J S, additional, Kramer, M, additional, Lam, M T, additional, Lamb, W G, additional, Lazio, T J W, additional, Lee, K J, additional, Lentati, L, additional, Liu, K, additional, Luo, J, additional, Lynch, R S, additional, Lyne, A G, additional, Madison, D R, additional, Main, R A, additional, Manchester, R N, additional, McEwen, A, additional, McKee, J W, additional, McLaughlin, M A, additional, Mickaliger, M B, additional, Mingarelli, C M F, additional, Ng, C, additional, Nice, D J, additional, Osłowski, S, additional, Parthasarathy, A, additional, Pennucci, T T, additional, Perera, B B P, additional, Perrodin, D, additional, Petiteau, A, additional, Pol, N S, additional, Porayko, N K, additional, Possenti, A, additional, Ransom, S M, additional, Ray, P S, additional, Reardon, D J, additional, Russell, C J, additional, Samajdar, A, additional, Sampson, L M, additional, Sanidas, S, additional, Sarkissian, J M, additional, Schmitz, K, additional, Schult, L, additional, Sesana, A, additional, Shaifullah, G, additional, Shannon, R M, additional, Shapiro-Albert, B J, additional, Siemens, X, additional, Simon, J, additional, Smith, T L, additional, Speri, L, additional, Spiewak, R, additional, Stairs, I H, additional, Stappers, B W, additional, Stinebring, D R, additional, Swiggum, J K, additional, Taylor, S R, additional, Theureau, G, additional, Tiburzi, C, additional, Vallisneri, M, additional, van der Wateren, E, additional, Vecchio, A, additional, Verbiest, J P W, additional, Vigeland, S J, additional, Wahl, H, additional, Wang, J B, additional, Wang, J, additional, Wang, L, additional, Witt, C A, additional, Zhang, S, additional, and Zhu, X J, additional

Published
2022
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10. The Parkes pulsar timing array second data release: timing analysis

Author

Reardon, D J, primary, Shannon, R M, additional, Cameron, A D, additional, Goncharov, B, additional, Hobbs, G B, additional, Middleton, H, additional, Shamohammadi, M, additional, Thyagarajan, N, additional, Bailes, M, additional, Bhat, N D R, additional, Dai, S, additional, Kerr, M, additional, Manchester, R N, additional, Russell, C J, additional, Spiewak, R, additional, Wang, J B, additional, and Zhu, X J, additional

Published
2021
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11. Identifying and mitigating noise sources in precision pulsar timing data sets

Author

Goncharov, Boris, primary, Reardon, D J, additional, Shannon, R M, additional, Zhu, Xing-Jiang, additional, Thrane, Eric, additional, Bailes, M, additional, Bhat, N D R, additional, Dai, S, additional, Hobbs, G, additional, Kerr, M, additional, Manchester, R N, additional, Osłowski, S, additional, Parthasarathy, A, additional, Russell, C J, additional, Spiewak, R, additional, Thyagarajan, N, additional, and Wang, J B, additional

Published
2020
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12. An in-depth investigation of 11 pulsars discovered by FAST

Author

Cameron, A D, primary, Li, D, primary, Hobbs, G, primary, Zhang, L, primary, Miao, C C, primary, Wang, J B, primary, Yuan, M, primary, Wang, S, primary, Jacobs Corban, G, primary, Cruces, M, primary, Dai, S, primary, Feng, Y, primary, Han, J, primary, Kaczmarek, J F, primary, Niu, J R, primary, Pan, Z C, primary, Qian, L, primary, Tao, Z Z, primary, Wang, P, primary, Wang, S Q, primary, Xu, H, primary, Xu, R X, primary, Yue, Y L, primary, Zhang, S B, primary, Zhi, Q J, primary, Zhu, W W, primary, Champion, D J, primary, Kramer, M, primary, Zhou, S Q, primary, Qiu, K P, primary, and Zhu, M, primary

Published
2020
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13. A pulsar-based time-scale from the International Pulsar Timing Array

Author

Hobbs, G, primary, Guo, L, additional, Caballero, R N, additional, Coles, W, additional, Lee, K J, additional, Manchester, R N, additional, Reardon, D J, additional, Matsakis, D, additional, Tong, M L, additional, Arzoumanian, Z, additional, Bailes, M, additional, Bassa, C G, additional, Bhat, N D R, additional, Brazier, A, additional, Burke-Spolaor, S, additional, Champion, D J, additional, Chatterjee, S, additional, Cognard, I, additional, Dai, S, additional, Desvignes, G, additional, Dolch, T, additional, Ferdman, R D, additional, Graikou, E, additional, Guillemot, L, additional, Janssen, G H, additional, Keith, M J, additional, Kerr, M, additional, Kramer, M, additional, Lam, M T, additional, Liu, K, additional, Lyne, A, additional, Lazio, T J W, additional, Lynch, R, additional, McKee, J W, additional, McLaughlin, M A, additional, Mingarelli, C M F, additional, Nice, D J, additional, Osłowski, S, additional, Pennucci, T T, additional, Perera, B B P, additional, Perrodin, D, additional, Possenti, A, additional, Russell, C J, additional, Sanidas, S, additional, Sesana, A, additional, Shaifullah, G, additional, Shannon, R M, additional, Simon, J, additional, Spiewak, R, additional, Stairs, I H, additional, Stappers, B W, additional, Swiggum, J K, additional, Taylor, S R, additional, Theureau, G, additional, Toomey, L, additional, van Haasteren, R, additional, Wang, J B, additional, Wang, Y, additional, and Zhu, X J, additional

Published
2019
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14. The International Pulsar Timing Array: second data release

Author

Perera, B B P, primary, DeCesar, M E, additional, Demorest, P B, additional, Kerr, M, additional, Lentati, L, additional, Nice, D J, additional, Osłowski, S, additional, Ransom, S M, additional, Keith, M J, additional, Arzoumanian, Z, additional, Bailes, M, additional, Baker, P T, additional, Bassa, C G, additional, Bhat, N D R, additional, Brazier, A, additional, Burgay, M, additional, Burke-Spolaor, S, additional, Caballero, R N, additional, Champion, D J, additional, Chatterjee, S, additional, Chen, S, additional, Cognard, I, additional, Cordes, J M, additional, Crowter, K, additional, Dai, S, additional, Desvignes, G, additional, Dolch, T, additional, Ferdman, R D, additional, Ferrara, E C, additional, Fonseca, E, additional, Goldstein, J M, additional, Graikou, E, additional, Guillemot, L, additional, Hazboun, J S, additional, Hobbs, G, additional, Hu, H, additional, Islo, K, additional, Janssen, G H, additional, Karuppusamy, R, additional, Kramer, M, additional, Lam, M T, additional, Lee, K J, additional, Liu, K, additional, Luo, J, additional, Lyne, A G, additional, Manchester, R N, additional, McKee, J W, additional, McLaughlin, M A, additional, Mingarelli, C M F, additional, Parthasarathy, A P, additional, Pennucci, T T, additional, Perrodin, D, additional, Possenti, A, additional, Reardon, D J, additional, Russell, C J, additional, Sanidas, S A, additional, Sesana, A, additional, Shaifullah, G, additional, Shannon, R M, additional, Siemens, X, additional, Simon, J, additional, Spiewak, R, additional, Stairs, I H, additional, Stappers, B W, additional, Swiggum, J K, additional, Taylor, S R, additional, Theureau, G, additional, Tiburzi, C, additional, Vallisneri, M, additional, Vecchio, A, additional, Wang, J B, additional, Zhang, S B, additional, Zhang, L, additional, Zhu, W W, additional, and Zhu, X J, additional

Published
2019
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15. Commensal discovery of four fast radio bursts during Parkes Pulsar Timing Array observations

Author

Osłowski, S, primary, Shannon, R M, primary, Ravi, V, primary, Kaczmarek, J F, primary, Zhang, S, primary, Hobbs, G, primary, Bailes, M, primary, Russell, C J, primary, van Straten, W, primary, James, C W, primary, Jameson, A, primary, Mahony, E K, primary, Kumar, P, primary, Andreoni, I, primary, Bhat, N D R, primary, Burke-Spolaor, S, primary, Dai, S, primary, Dempsey, J, primary, Kerr, M, primary, Manchester, R N, primary, Parthasarathy, A, primary, Reardon, D, primary, Sarkissian, J M, primary, Spiewak, R, primary, Toomey, L, primary, Wang, J-B, primary, Zhang, L, primary, and Zhu, X-J, primary

Published
2019
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16. Identifying and mitigating noise sources in precision pulsar timing data sets.

Author

Goncharov, Boris, Reardon, D J, Shannon, R M, Zhu, Xing-Jiang, Thrane, Eric, Bailes, M, Bhat, N D R, Dai, S, Hobbs, G, Kerr, M, Manchester, R N, Osłowski, S, Parthasarathy, A, Russell, C J, Spiewak, R, Thyagarajan, N, and Wang, J B

Subjects
PULSARS, GRAVITATIONAL waves, NOISE, STATISTICAL models
Abstract

Pulsar timing array projects measure the pulse arrival times of millisecond pulsars for the primary purpose of detecting nanohertz-frequency gravitational waves. The measurements include contributions from a number of astrophysical and instrumental processes, which can either be deterministic or stochastic. It is necessary to develop robust statistical and physical models for these noise processes because incorrect models diminish sensitivity and may cause a spurious gravitational wave detection. Here we characterize noise processes for the 26 pulsars in the second data release of the Parkes Pulsar Timing Array using Bayesian inference. In addition to well-studied noise sources found previously in pulsar timing array data sets such as achromatic timing noise and dispersion measure variations, we identify new noise sources including time-correlated chromatic noise that we attribute to variations in pulse scattering. We also identify 'exponential dip' events in four pulsars, which we attribute to magnetospheric effects as evidenced by pulse profile shape changes observed for three of the pulsars. This includes an event in PSR J1713+0747, which had previously been attributed to interstellar propagation. We present noise models to be used in searches for gravitational waves. We outline a robust methodology to evaluate the performance of noise models and identify unknown signals in the data. The detection of variations in pulse profiles highlights the need to develop efficient profile domain timing methods. [ABSTRACT FROM AUTHOR]

Published
2021
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17. Searching for gravitational-wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array.

Author

Yonemaru, N, Kuroyanagi, S, Hobbs, G, Takahashi, K, Zhu, X-J, Coles, W A, Dai, S, Howard, E, Manchester, R, Reardon, D, Russell, C, M Shannon, R, Thyagarajan, N, Spiewak, R, and Wang, J-B

Subjects
COSMIC strings, PULSARS, FALSE alarms, GRAVITATIONAL waves
Abstract

Cosmic strings are potential gravitational-wave (GW) sources that can be probed by pulsar timing arrays (PTAs). In this work we develop a detection algorithm for a GW burst from a cusp on a cosmic string, and apply it to Parkes PTA data. We find four events with a false alarm probability less than 1 per cent. However further investigation shows that all of these are likely to be spurious. As there are no convincing detections we place upper limits on the GW amplitude for different event durations. From these bounds we place limits on the cosmic string tension of G μ ∼ 10−5, and highlight that this bound is independent from those obtained using other techniques. We discuss the physical implications of our results and the prospect of probing cosmic strings in the era of Square Kilometre Array. [ABSTRACT FROM AUTHOR]

Published
2021
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18. Studying the Solar system with the International Pulsar Timing Array

Author

Caballero, R N, primary, Guo, Y J, additional, Lee, K J, additional, Lazarus, P, additional, Champion, D J, additional, Desvignes, G, additional, Kramer, M, additional, Plant, K, additional, Arzoumanian, Z, additional, Bailes, M, additional, Bassa, C G, additional, Bhat, N D R, additional, Brazier, A, additional, Burgay, M, additional, Burke-Spolaor, S, additional, Chamberlin, S J, additional, Chatterjee, S, additional, Cognard, I, additional, Cordes, J M, additional, Dai, S, additional, Demorest, P, additional, Dolch, T, additional, Ferdman, R D, additional, Fonseca, E, additional, Gair, J R, additional, Garver-Daniels, N, additional, Gentile, P, additional, Gonzalez, M E, additional, Graikou, E, additional, Guillemot, L, additional, Hobbs, G, additional, Janssen, G H, additional, Karuppusamy, R, additional, Keith, M J, additional, Kerr, M, additional, Lam, M T, additional, Lasky, P D, additional, Lazio, T J W, additional, Levin, L, additional, Liu, K, additional, Lommen, A N, additional, Lorimer, D R, additional, Lynch, R S, additional, Madison, D R, additional, Manchester, R N, additional, McKee, J W, additional, McLaughlin, M A, additional, McWilliams, S T, additional, Mingarelli, C M F, additional, Nice, D J, additional, Osłowski, S, additional, Palliyaguru, N T, additional, Pennucci, T T, additional, Perera, B B P, additional, Perrodin, D, additional, Possenti, A, additional, Ransom, S M, additional, Reardon, D J, additional, Sanidas, S A, additional, Sesana, A, additional, Shaifullah, G, additional, Shannon, R M, additional, Siemens, X, additional, Simon, J, additional, Spiewak, R, additional, Stairs, I, additional, Stappers, B, additional, Stinebring, D R, additional, Stovall, K, additional, Swiggum, J K, additional, Taylor, S R, additional, Theureau, G, additional, Tiburzi, C, additional, Toomey, L, additional, van Haasteren, R, additional, van Straten, W, additional, Verbiest, J P W, additional, Wang, J B, additional, Zhu, X J, additional, and Zhu, W W, additional

Published
2018
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19. Comparison of pulsar positions from timing and very long baseline astrometry

Author

Wang, J. B., primary, Coles, W. A., additional, Hobbs, G., additional, Shannon, R. M., additional, Manchester, R. N., additional, Kerr, M., additional, Yuan, J. P., additional, Wang, N., additional, Bailes, M., additional, Bhat, N. D. R., additional, Dai, S., additional, Dempsey, J., additional, Keith, M. J., additional, Lasky, P. D., additional, Levin, Y., additional, Osłowski, S., additional, Ravi, V., additional, Reardon, D. J., additional, Rosado, P. A., additional, Russell, C. J., additional, Spiewak, R., additional, van Straten, W., additional, Toomey, L., additional, Wen, L., additional, You, X.-P., additional, and Zhu, X.-J., additional

Published
2017
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22. The International Pulsar Timing Array: First data release

Author

Verbiest, J. P. W., primary, Lentati, L., additional, Hobbs, G., additional, van Haasteren, R., additional, Demorest, P. B., additional, Janssen, G. H., additional, Wang, J.-B., additional, Desvignes, G., additional, Caballero, R. N., additional, Keith, M. J., additional, Champion, D. J., additional, Arzoumanian, Z., additional, Babak, S., additional, Bassa, C. G., additional, Bhat, N. D. R., additional, Brazier, A., additional, Brem, P., additional, Burgay, M., additional, Burke-Spolaor, S., additional, Chamberlin, S. J., additional, Chatterjee, S., additional, Christy, B., additional, Cognard, I., additional, Cordes, J. M., additional, Dai, S., additional, Dolch, T., additional, Ellis, J. A., additional, Ferdman, R. D., additional, Fonseca, E., additional, Gair, J. R., additional, Garver-Daniels, N. E., additional, Gentile, P., additional, Gonzalez, M. E., additional, Graikou, E., additional, Guillemot, L., additional, Hessels, J. W. T., additional, Jones, G., additional, Karuppusamy, R., additional, Kerr, M., additional, Kramer, M., additional, Lam, M. T., additional, Lasky, P. D., additional, Lassus, A., additional, Lazarus, P., additional, Lazio, T. J. W., additional, Lee, K. J., additional, Levin, L., additional, Liu, K., additional, Lynch, R. S., additional, Lyne, A. G., additional, Mckee, J., additional, McLaughlin, M. A., additional, McWilliams, S. T., additional, Madison, D. R., additional, Manchester, R. N., additional, Mingarelli, C. M. F., additional, Nice, D. J., additional, Osłowski, S., additional, Palliyaguru, N. T., additional, Pennucci, T. T., additional, Perera, B. B. P., additional, Perrodin, D., additional, Possenti, A., additional, Petiteau, A., additional, Ransom, S. M., additional, Reardon, D., additional, Rosado, P. A., additional, Sanidas, S. A., additional, Sesana, A., additional, Shaifullah, G., additional, Shannon, R. M., additional, Siemens, X., additional, Simon, J., additional, Smits, R., additional, Spiewak, R., additional, Stairs, I. H., additional, Stappers, B. W., additional, Stinebring, D. R., additional, Stovall, K., additional, Swiggum, J. K., additional, Taylor, S. R., additional, Theureau, G., additional, Tiburzi, C., additional, Toomey, L., additional, Vallisneri, M., additional, van Straten, W., additional, Vecchio, A., additional, Wang, Y., additional, Wen, L., additional, You, X. P., additional, Zhu, W. W., additional, and Zhu, X.-J., additional

Published
2016
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23. Versatile directional searches for gravitational waves with Pulsar Timing Arrays

Author

Madison, D. R., primary, Zhu, X.-J., additional, Hobbs, G., additional, Coles, W., additional, Shannon, R. M., additional, Wang, J. B., additional, Tiburzi, C., additional, Manchester, R. N., additional, Bailes, M., additional, Bhat, N. D. R., additional, Burke-Spolaor, S., additional, Dai, S., additional, Dempsey, J., additional, Keith, M., additional, Kerr, M., additional, Lasky, P., additional, Levin, Y., additional, Osłowski, S., additional, Ravi, V., additional, Reardon, D., additional, Rosado, P., additional, Spiewak, R., additional, van Straten, W., additional, Toomey, L., additional, Wen, L., additional, and You, X., additional

Published
2015
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25. Searching for gravitational wave memory bursts with the Parkes Pulsar Timing Array

Author

Wang, J. B., primary, Hobbs, G., additional, Coles, W., additional, Shannon, R. M., additional, Zhu, X. J., additional, Madison, D. R., additional, Kerr, M., additional, Ravi, V., additional, Keith, M. J., additional, Manchester, R. N., additional, Levin, Y., additional, Bailes, M., additional, Bhat, N. D. R., additional, Burke-Spolaor, S., additional, Dai, S., additional, Osłowski, S., additional, van Straten, W., additional, Toomey, L., additional, Wang, N., additional, and Wen, L., additional

Published
2014
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26. Versatile directional searches for gravitational waves with Pulsar Timing Arrays.

Author

Madison, D. R., Zhu, X.-J., Hobbs, G., Coles, W., Shannon, R. M., Wang, J. B., Tiburzi, C., Manchester, R. N., Bailes, M., Bhat, N. D. R., Burke-Spolaor, S., Dai, S., Dempsey, J., Keith, M., Kerr, M., Lasky, P., Levin, Y., Osłowski, S., Ravi, V., and Reardon, D.

Subjects
BINARY pulsars, GRAVITATIONAL wave astronomy, GENERAL relativity (Physics), WAVES (Physics), RADIATION
Abstract

By regularly monitoring the most stable millisecond pulsars over many years, pulsar timing arrays (PTAs) are positioned to detect and study correlations in the timing behaviour of those pulsars. Gravitational waves (GWs) from supermassive black hole binaries (SMBHBs) are an exciting potentially detectable source of such correlations. We describe a straightforward technique by which a PTAcan be 'phased-up' to form time series of the two polarization modes of GWs coming from a particular direction of the sky. Our technique requires no assumptions regarding the time-domain behaviour of a GW signal. This method has already been used to place stringent bounds on GWs from individual SMBHBs in circular orbits. Here, we describe the methodology and demonstrate the versatility of the technique in searches for a wide variety of GW signals including bursts with unmodelled waveforms. Using the first six years of data from the Parkes Pulsar Timing Array, we conduct an all-sky search for a detectable excess of GW power from any direction. For the lines of sight to several nearby massive galaxy clusters, we carry out a more detailed search for GW bursts with memory, which are distinct signatures of SMBHB mergers. In all cases, we find that the data are consistent with noise. [ABSTRACT FROM AUTHOR]

Published
2016
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