The Experts below are selected from a list of 19902 Experts worldwide ranked by ideXlab platform
William W Zhang - One of the best experts on this subject based on the ideXlab platform.
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calibration of the rossi x ray timing explorer Proportional Counter array
Astrophysical Journal Supplement Series, 2006Co-Authors: K Jahoda, Craig B Markwardt, Y L Radeva, Arnold H Rots, M J Stark, J H Swank, Tod E Strohmayer, William W ZhangAbstract:We present the calibration and background model for the Proportional Counter Array on board the Rossi X-Ray Timing Explorer. The energy calibration is systematics-limited below 10 keV, with deviations from a power-law fit to the Crab Nebula plus pulsar of less than 1%. Unmodeled variations in the instrumental background amount to less than 2% of the observed background below 10 keV and less than 1% between 10 and 20 keV. Individual photon arrival times are accurate to 4.4 μs at all times during the mission and to 2.5 μs after 1997 April 29. The peak pointing direction of the five collimators is known to a precision of a few arcseconds.
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calibration of the rossi x ray timing explorer Proportional Counter array
arXiv: Astrophysics, 2005Co-Authors: K Jahoda, Craig B Markwardt, Y L Radeva, Arnold H Rots, M J Stark, J H Swank, Tod E Strohmayer, William W ZhangAbstract:We present the calibration and background model for the Proportional Counter Array (PCA) aboard the Rossi X-ray Timing Explorer (RXTE). The energy calibration is systematics limited below 10 keV with deviations from a power-law fit to the Crab nebula plus pulsar less than 1%. Unmodelled variations in the instrument background amount to less than 2% of the observed background below 10 keV and less than 1% between 10 and 20 keV. Individual photon arrival times are accurate to 4.4 micro-seconds at all times during the mission and to 2.5 micro-seconds after 29 April 1997. The peak pointing direction of the five collimators is known to a precision of a few arc-seconds
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in orbit performance and calibration of the rossi x ray timing explorer rxte Proportional Counter array pca
SPIE's 1996 International Symposium on Optical Science Engineering and Instrumentation, 1996Co-Authors: K Jahoda, M J Stark, J H Swank, Tod E Strohmayer, William W Zhang, A B Giles, E MorganAbstract:The Proportional Counter array (PCA) is designed to perform microsecond timing of bright galactic sources and broad band, confusion limited, studies of faint extragalactic sources in the 2 - 60 keV x-ray band. The PCA was launched as part of the Rossi X-ray Timing Explorer (RXTE) satellite into a circular orbit of altitude 580 km and 23 degrees inclination on December 30, 1995. The mission contains three experiments: a set of large area xenon Proportional Counters sensitive from 2 - 60 keV (Proportional Counter array: PCA), a set of large area sodium iodide scintillators sensitive from 15 - 200 keV (high energy x-ray timing experiment: HEXTE), and three wide field of view scanning detectors which monitor most of the sky each orbit (all sky monitor: ASM). The goals of the mission are summarized by Swank et al. We present performance and calibration data on the measured and predicted in-orbit background, energy response, relative and absolute timing performance, and the operational possibilities made available with the high performance experiment data system (EDS) designed and built by MIT.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Y L Radeva - One of the best experts on this subject based on the ideXlab platform.
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calibration of the rossi x ray timing explorer Proportional Counter array
Astrophysical Journal Supplement Series, 2006Co-Authors: K Jahoda, Craig B Markwardt, Y L Radeva, Arnold H Rots, M J Stark, J H Swank, Tod E Strohmayer, William W ZhangAbstract:We present the calibration and background model for the Proportional Counter Array on board the Rossi X-Ray Timing Explorer. The energy calibration is systematics-limited below 10 keV, with deviations from a power-law fit to the Crab Nebula plus pulsar of less than 1%. Unmodeled variations in the instrumental background amount to less than 2% of the observed background below 10 keV and less than 1% between 10 and 20 keV. Individual photon arrival times are accurate to 4.4 μs at all times during the mission and to 2.5 μs after 1997 April 29. The peak pointing direction of the five collimators is known to a precision of a few arcseconds.
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calibration of the rossi x ray timing explorer Proportional Counter array
arXiv: Astrophysics, 2005Co-Authors: K Jahoda, Craig B Markwardt, Y L Radeva, Arnold H Rots, M J Stark, J H Swank, Tod E Strohmayer, William W ZhangAbstract:We present the calibration and background model for the Proportional Counter Array (PCA) aboard the Rossi X-ray Timing Explorer (RXTE). The energy calibration is systematics limited below 10 keV with deviations from a power-law fit to the Crab nebula plus pulsar less than 1%. Unmodelled variations in the instrument background amount to less than 2% of the observed background below 10 keV and less than 1% between 10 and 20 keV. Individual photon arrival times are accurate to 4.4 micro-seconds at all times during the mission and to 2.5 micro-seconds after 29 April 1997. The peak pointing direction of the five collimators is known to a precision of a few arc-seconds
Craig B Markwardt - One of the best experts on this subject based on the ideXlab platform.
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calibration of the rossi x ray timing explorer Proportional Counter array
Astrophysical Journal Supplement Series, 2006Co-Authors: K Jahoda, Craig B Markwardt, Y L Radeva, Arnold H Rots, M J Stark, J H Swank, Tod E Strohmayer, William W ZhangAbstract:We present the calibration and background model for the Proportional Counter Array on board the Rossi X-Ray Timing Explorer. The energy calibration is systematics-limited below 10 keV, with deviations from a power-law fit to the Crab Nebula plus pulsar of less than 1%. Unmodeled variations in the instrumental background amount to less than 2% of the observed background below 10 keV and less than 1% between 10 and 20 keV. Individual photon arrival times are accurate to 4.4 μs at all times during the mission and to 2.5 μs after 1997 April 29. The peak pointing direction of the five collimators is known to a precision of a few arcseconds.
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calibration of the rossi x ray timing explorer Proportional Counter array
arXiv: Astrophysics, 2005Co-Authors: K Jahoda, Craig B Markwardt, Y L Radeva, Arnold H Rots, M J Stark, J H Swank, Tod E Strohmayer, William W ZhangAbstract:We present the calibration and background model for the Proportional Counter Array (PCA) aboard the Rossi X-ray Timing Explorer (RXTE). The energy calibration is systematics limited below 10 keV with deviations from a power-law fit to the Crab nebula plus pulsar less than 1%. Unmodelled variations in the instrument background amount to less than 2% of the observed background below 10 keV and less than 1% between 10 and 20 keV. Individual photon arrival times are accurate to 4.4 micro-seconds at all times during the mission and to 2.5 micro-seconds after 29 April 1997. The peak pointing direction of the five collimators is known to a precision of a few arc-seconds
K Jahoda - One of the best experts on this subject based on the ideXlab platform.
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calibration of the rossi x ray timing explorer Proportional Counter array
Astrophysical Journal Supplement Series, 2006Co-Authors: K Jahoda, Craig B Markwardt, Y L Radeva, Arnold H Rots, M J Stark, J H Swank, Tod E Strohmayer, William W ZhangAbstract:We present the calibration and background model for the Proportional Counter Array on board the Rossi X-Ray Timing Explorer. The energy calibration is systematics-limited below 10 keV, with deviations from a power-law fit to the Crab Nebula plus pulsar of less than 1%. Unmodeled variations in the instrumental background amount to less than 2% of the observed background below 10 keV and less than 1% between 10 and 20 keV. Individual photon arrival times are accurate to 4.4 μs at all times during the mission and to 2.5 μs after 1997 April 29. The peak pointing direction of the five collimators is known to a precision of a few arcseconds.
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calibration of the rossi x ray timing explorer Proportional Counter array
arXiv: Astrophysics, 2005Co-Authors: K Jahoda, Craig B Markwardt, Y L Radeva, Arnold H Rots, M J Stark, J H Swank, Tod E Strohmayer, William W ZhangAbstract:We present the calibration and background model for the Proportional Counter Array (PCA) aboard the Rossi X-ray Timing Explorer (RXTE). The energy calibration is systematics limited below 10 keV with deviations from a power-law fit to the Crab nebula plus pulsar less than 1%. Unmodelled variations in the instrument background amount to less than 2% of the observed background below 10 keV and less than 1% between 10 and 20 keV. Individual photon arrival times are accurate to 4.4 micro-seconds at all times during the mission and to 2.5 micro-seconds after 29 April 1997. The peak pointing direction of the five collimators is known to a precision of a few arc-seconds
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in orbit performance and calibration of the rossi x ray timing explorer rxte Proportional Counter array pca
SPIE's 1996 International Symposium on Optical Science Engineering and Instrumentation, 1996Co-Authors: K Jahoda, M J Stark, J H Swank, Tod E Strohmayer, William W Zhang, A B Giles, E MorganAbstract:The Proportional Counter array (PCA) is designed to perform microsecond timing of bright galactic sources and broad band, confusion limited, studies of faint extragalactic sources in the 2 - 60 keV x-ray band. The PCA was launched as part of the Rossi X-ray Timing Explorer (RXTE) satellite into a circular orbit of altitude 580 km and 23 degrees inclination on December 30, 1995. The mission contains three experiments: a set of large area xenon Proportional Counters sensitive from 2 - 60 keV (Proportional Counter array: PCA), a set of large area sodium iodide scintillators sensitive from 15 - 200 keV (high energy x-ray timing experiment: HEXTE), and three wide field of view scanning detectors which monitor most of the sky each orbit (all sky monitor: ASM). The goals of the mission are summarized by Swank et al. We present performance and calibration data on the measured and predicted in-orbit background, energy response, relative and absolute timing performance, and the operational possibilities made available with the high performance experiment data system (EDS) designed and built by MIT.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Y Iwata - One of the best experts on this subject based on the ideXlab platform.
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the response of a spherical tissue equivalent Proportional Counter to different ions having similar linear energy transfer
Radiation Research, 2004Co-Authors: Stephen B Guetersloh, Thomas B Borak, Phillip J Taddei, C Zeitlin, L Heilbronn, J Miller, T Murakami, Y IwataAbstract:Abstract Guetersloh, S. B., Borak, T. B., Taddei, P. J., Zeitlin, C., Heilbronn, L., Miller, J., Murakami, T. and Iwata, Y. The Response of a Spherical Tissue-Equivalent Proportional Counter to Different Ions Having Similar LET. Radiat. Res. 161, 64–71 (2004). The response of a tissue-equivalent Proportional Counter (TEPC) to different ions having a similar linear energy transfer (LET) has been studied. Three ions, 14N, 20Ne and 28Si, were investigated using the HIMAC accelerator at the National Institute of Radiological Sciences at Chiba, Japan. The calculated linear energy transfer (LET∞) of all ions was 44 ± 2 keV/μm at the sensitive volume of the TEPC. A particle spectrometer was used to record the charge and position of each incident beam particle. This enabled reconstruction of the location of the track as it passed though the TEPC and ensured that the particle survived without fragmentation. The spectrum of energy deposition events in the TEPC could be evaluated as a function of trajectory through ...
