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5 results on '"Steven E. Holland"'

1. SNAP NIR detectors

Author

Eric V. Linder, Guobin Wang, Saul Perlmutter, Steven E. Holland, S. Harris, Dragan Huterer, Greg Aldering, Eric Prieto, R. Lafever, A. L. Spadafora, Jason Rhodes, J.F. Genat, George F. Smoot, Michael Levi, H. von der Lippe, S. C. Loken, Mark L. Brown, Alex G. Kim, Anne Ealet, Pierre Astier, B. Krieger, Daniel Levin, William F. Kolbe, Michael Schubnell, Ariel Goobar, R. DiGennaro, Peter Harvey, E. Barrelet, Richard S. Ellis, Alain Bonissent, Alexandre Refregier, Michael Sholl, Timothy A. McKay, David H. Pankow, R. Pratt, E. Moertsell, Michael Lampton, Susana E. Deustua, H. Heetderks, Rahman Amanullah, Donald E. Groom, M. Eriksson, Nicholas P. Palaio, Manfred Bester, Carl W. Akerlof, K. Robinson, Ramon Miquel, Peter Nugent, J.-P. Walder, Gary Bernstein, Shawn McKee, S. Mufson, Gerson Goldhaber, William Carithers, Richard Massey, Roger F. Malina, Andrew S. Fruchter, A. D. Tomasch, D. Vincent, J. I. Lamoureux, Armin Karcher, C. R. Bower, Gregory Tarle, Natalie A. Roe, J. A. Musser, Lars Bergström, C. T. Day, G. Smadja, Hakeem M. Oluseyi, Chris Bebek, Eugene D. Commins, Reynald Pain, J. Bercovitz, Nick Mostek, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Flores, Sylvie

Subjects
Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 010309 optics, Photometry (optics), Acceleration, Integral field spectrograph, Optics, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, media_common, Physics, Zodiacal light, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], business.industry, Near-infrared spectroscopy, Universe, Cardinal point, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Dark energy, business
Abstract

The SuperNova/Acceleration Probe (SNAP) will measure precisely the cosmological expansion history over both the acceleration and deceleration epochs and thereby constrain the nature of the dark energy that dominates our universe today. The SNAP focal plane contains equal areas of optical CCDs and NIR sensors and an integral field spectrograph. Having over 150 million pixels and a field-of-view of 0.34 square degrees, the SNAP NIR system will be the largest yet constructed. With sensitivity in the range 0.9-1.7 μm, it will detect Type Ia supernovae between z = 1 and 1.7 and will provide follow-up precision photometry for all supernovae. HgCdTe technology, with a cut-off tuned to 1.7 μm, will permit passive cooling at 140 K while maintaining noise below zodiacal levels. By dithering to remove the effects of intrapixel variations and by careful attention to other instrumental effects, we expect to control relative photometric accuracy below a few hundredths of a magnitude. Because SNAP continuously revisits the same fields we will be able to achieve outstanding statistical precision on the photometry of reference stars in these fields, allowing precise monitoring of our detectors. The capabilities of the NIR system for broadening the science reach of SNAP are discussed.

Published
2003
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2. SNAP: an integral field spectrograph for supernova identification

Author

Anne Ealet, Eric Prieto, Alain Bonissent, Roger Malina, G. Bernstein, Stephane Basa, Oliver LeFevre, Alain Mazure, Christophe Bonneville, Carl W. Akerlof, Greg Aldering, R. Amanullah, Pierre Astier, E. Barrelet, Christopher Bebek, Lars Bergstrom, John Bercovitz, Manfred Bester, C. R. Bower, William C. Carithers, Jr., Eugene D. Commins, C. Day, Susana E. Deustua, Richard S. DiGennaro, R. Ellis, Mikael Eriksson, Andrew Fruchter, Jean-Francois Genat, Gerson Goldhaber, Ariel Goobar, Donald E. Groom, Stewart E. Harris, Peter R. Harvey, Henry D. Heetderks, Steven E. Holland, Dragan Huterer, Armin Karcher, Alex G. Kim, William F. Kolbe, B. Krieger, R. Lafever, J. Lamoureux, Michael L. Lampton, Michael E. Levi, Daniel S. Levin, Eric V. Linder, Stewart C. Loken, R. Massey, Timothy McKay, Shawn P. McKee, Ramon Miquel, E. Moertsell, N. Mostek, Stuart Mufson, J. A. Musser, Peter E. Nugent, Hakeem M. Oluseyi, Reynald Pain, Nicholas P. Palaio, David H. Pankow, Saul Perlmutter, R. Pratt, Alexandre Refregier, J. Rhodes, Kem E. Robinson, N. Roe, Michael Sholl, Michael S. Schubnell, G. Smadja, George F. Smoot, Anthony Spadafora, Gregory Tarle, Andrew D. Tomasch, H. von der Lippe, D. Vincent, J.-P. Walder, Guobin Wang, and Mather, John C.

Subjects
Physics, Field (physics), business.industry, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Type (model theory), 01 natural sciences, 010309 optics, Supernova, Acceleration, Optics, Integral field spectrograph, 0103 physical sciences, Magnitude (astronomy), Spectral resolution, business, 010303 astronomy & astrophysics, Spectrograph
Abstract

A well-adapted spectrograph concept has been developed for the SNAP (SuperNova/Acceleration Probe) experiment. The goal is to ensure proper identification of Type Ia supernovae and to standardize the magnitude of each candidate by determining explosion parameters. An instrument based on an integral field method with the powerful concept of imager slicing has been designed and is presented in this paper. The spectrograph concept is optimized to have very high efficiency and low spectral resolution (R {approx} 100), constant through the wavelength range (0.35-1.7{micro}m), adapted to the scientific goals of the mission.

Published
2003
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3. SNAP Telescope

Author

Michael L. Lampton, Carl W. Akerlof, Greg Aldering, R. Amanullah, Pierre Astier, E. Barrelet, Christopher Bebek, Lars Bergstrom, John Bercovitz, G. Bernstein, Manfred Bester, Alain Bonissent, C. R. Bower, William C. Carithers, Jr., Eugene D. Commins, C. Day, Susana E. Deustua, Richard S. DiGennaro, Anne Ealet, Richard S. Ellis, Mikael Eriksson, Andrew Fruchter, Jean-Francois Genat, Gerson Goldhaber, Ariel Goobar, Donald E. Groom, Stewart E. Harris, Peter R. Harvey, Henry D. Heetderks, Steven E. Holland, Dragan Huterer, Armin Karcher, Alex G. Kim, William F. Kolbe, B. Krieger, R. Lafever, J. Lamoureux, Michael E. Levi, Daniel S. Levin, Eric V. Linder, Stewart C. Loken, Roger Malina, R. Massey, Timothy McKay, Shawn P. McKee, Ramon Miquel, E. Mortsell, N. Mostek, Stuart Mufson, J. A. Musser, Peter E. Nugent, Hakeem M. Oluseyi, Reynald Pain, Nicholas P. Palaio, David H. Pankow, Saul Perlmutter, R. Pratt, Eric Prieto, Alexandre Refregier, J. Rhodes, Kem E. Robinson, N. Roe, Michael Sholl, Michael S. Schubnell, G. Smadja, George F. Smoot, A. Spadafora, Gregory Tarle, Andrew D. Tomasch, H. von der Lippe, R. Vincent, J.-P. Walder, Guobin Wang, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), MacEwen, Howard A., and Flores, Sylvie

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 010309 optics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, 0103 physical sciences, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics, 01 natural sciences, Astrophysics::Galaxy Astrophysics
Abstract

The SuperNova/Acceleration Probe (SNAP) mission will require a two-meter class telescope delivering diffraction limited images spanning a one degree field in the visible and near infrared wavelength regime. This requirement, equivalent to nearly one billion pixel resolution, places stringent demands on its optical system in terms of field flatness, image quality, and freedom from chromatic aberration. We discuss the advantages of annular-field three-mirror anastigmat (TMA) telescopes for applications such as SNAP, and describe the features of the specific optical configuration that we have baselined for the SNAP mission. We discuss the mechanical design and choice of materials for the telescope. Then we present detailed ray traces and diffraction calculations for our baseline optical design. We briefly discuss stray light and tolerance issues, and present a preliminary wavefront error budget for the SNAP Telescope. We conclude by describing some of tasks to be carried out during the upcoming SNAP research and development phase.

Published
2002
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4. Overview of the SuperNova/Acceleration probe (SNAP)

Author

Greg Aldering, Carl W. Akerlof, R. Amanullah, Pierre Astier, E. Barrelet, Christopher Bebek, Lars Bergstrom, John Bercovitz, Gary M. Bernstein, Manfred Bester, Alain Bonissent, Charles Bower, William C. Carithers, Jr., Eugene D. Commins, C. Day, Susana E. Deustua, Richard S. DiGennaro, Anne Ealet, Richard S. Ellis, Mikael Eriksson, Andrew Fruchter, Jean-Francois Genat, Gerson Goldhaber, Ariel Goobar, Donald E. Groom, Stewart E. Harris, Peter R. Harvey, Henry D. Heetderks, Steven E. Holland, Dragan Huterer, Armin Karcher, Alex G. Kim, William F. Kolbe, B. Krieger, R. Lafever, James C. Lamoreux, Michael L. Lampton, Michael E. Levi, Daniel S. Levin, Eric V. Linder, Stewart C. Loken, Roger Malina, R. Massey, Timothy McKay, Shawn P. McKee, Ramon Miquel, E. Moertsell, N. Mostek, Stuart Mufson, J. A. Musser, Peter E. Nugent, Hakeem M. Oluseyi, Reynald Pain, Nicholas P. Palaio, David H. Pankow, Saul Perlmutter, R. Pratt, Eric Prieto, Alexandre Refregier, J. Rhodes, Kem E. Robinson, N. Roe, Michael Sholl, Michael S. Schubnell, G. Smadja, George F. Smoot, Anthony Spadafora, Gregory Tarle, Andrew D. Tomasch, H. von der Lippe, D. Vincent, J.-P. Walder, Guobin Wang, Flores, Sylvie, Dressler, A.M., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Dressler, Alan M.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Dark matter, FOS: Physical sciences, Three-mirror anastigmat, Cosmological constant, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], 01 natural sciences, 7. Clean energy, Metric expansion of space, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Integral field spectrograph, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010306 general physics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Equation of state (cosmology), Astrophysics (astro-ph), [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Dark energy, Quintessence
Abstract

The SuperNova / Acceleration Probe (SNAP) is a space-based experiment to measure the expansion history of the Universe and study both its dark energy and the dark matter. The experiment is motivated by the startling discovery that the expansion of the Universe is accelerating. A 0.7 square-degree imager comprised of 36 large format fully-depleted n-type CCD's sharing a focal plane with 36 HgCdTe detectors forms the heart of SNAP, allowing discovery and lightcurve measurements simultaneously for many supernovae. The imager and a high-efficiency low-resolution integral field spectrograph are coupled to a 2-m three mirror anastigmat wide-field telescope, which will be placed in a high-earth orbit. The SNAP mission can obtain high-signal-to-noise calibrated light-curves and spectra for over 2000 Type Ia supernovae at redshifts between z=0.1 and 1.7. The resulting data set can not only determine the amount of dark energy with high precision, but test the nature of the dark energy by examining its equation of state. In particular, dark energy due to a cosmological constant can be differentiated from alternatives such as "quintessence", by measuring the dark energy's equation of state to an accuracy of +/-0.05, and by studying its time dependence., This paper will be published in SPIE Proceedings Vol 4835 and is made available as an electronic preprint with permission of SPIE

Published
2002

5. Wide-field surveys from the SNAP mission

Author

Alex G. Kim, Carl W. Akerlof, Greg Aldering, R. Amanullah, Pierre Astier, E. Barrelet, Christopher Bebek, Lars Bergstrom, J. Bercovitz, Gary M. Bernstein, M. Bester, A. Bonissent, C. Bower, William C. Carithers, Jr., Eugene D. Commins, C. Day, Susana E. Deustua, R. DiGennaro, A. Ealet, Richard S. Ellis, M. Eriksson, Andrew Fruchter, Jean-Francois Genat, Gerson Goldhaber, Ariel Goobar, Donald E. Groom, Stewart E. Harris, Peter R. Harvey, Henry D. Heetderks, Steven E. Holland, Dragan Huterer, Armin Karcher, William F. Kolbe, B. Krieger, Robin E. Lafever, J. Lamoureux, Michael L. Lampton, Michael E. Levi, Daniel S. Levin, Eric V. Linder, Stewart C. Loken, Roger Malina, R. Massey, Timothy McKay, Shawn P. McKee, Ramon Miquel, E. Mortsell, N. Mostek, Stuart Mufson, J. A. Musser, Peter E. Nugent, Hakeem M. Oluseyi, Reynald Pain, Nicholas P. Palaio, David H. Pankow, Saul Perlmutter, R. Pratt, Eric Prieto, Alexandre Refregier, Jason Rhodes, Kem E. Robinson, N. Roe, Michael Sholl, Michael S. Schubnell, G. Smadja, George F. Smoot, Anthony Spadafora, Gregory Tarle, Andrew D. Tomasch, H. von der Lippe, D. Vincent, J.-P. Walder, Guobin Wang, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Flores, Sylvie, Tyson, J. Anthony, and Wolff, Sidney

Subjects
media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Acceleration, Observatory, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Angular resolution, 010303 astronomy & astrophysics, Weak gravitational lensing, Astrophysics::Galaxy Astrophysics, media_common, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics (astro-ph), Sampling (statistics), Supernova, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Sky, Magnitude (astronomy)
Abstract

The Supernova/Acceleration Probe (SNAP) is a proposed space-borne observatory that will survey the sky with a wide-field optical/near-infrared (NIR) imager. The images produced by SNAP will have an unprecedented combination of depth, solid-angle, angular resolution, and temporal sampling. For 16 months each, two 7.5 square-degree fields will be observed every four days to a magnitude depth of AB=27.7 in each of the SNAP filters, spanning 3500-17000\AA. Co-adding images over all epochs will give AB=30.3 per filter. In addition, a 300 square-degree field will be surveyed to AB=28 per filter, with no repeated temporal sampling. Although the survey strategy is tailored for supernova and weak gravitational lensing observations, the resulting data will support a broad range of auxiliary science programs., Comment: This paper will be published in SPIE Proceedings Vol. 4836 and is made available as an electronic preprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited

Published
2002

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