A study of the pointed observation methods and sensitivity of HXMT

JIN Jing; CHEN Yong; ZHANG Shuang-Nan; ZHANG Shu; LI Xin-Qiao; LI Gang

doi:10.1088/1674-1137/34/1/012

Chinese Physics C> 2010, Vol. 34> Issue(1) : 66-71 DOI: 10.1088/1674-1137/34/1/012

A study of the pointed observation methods and sensitivity of HXMT

Abstract
HTML
Reference
Related

PDF

Abstract：
The Hard X-ray Modulation Telescope (HXMT) is an X-ray astronomy satellite consisting of three slat-collimated instruments, the High Energy X-ray Instrument (HE), the Medium Energy X-ray Instrument (ME), and the Low Energy X-ray Instrument (LE). HXMT will carry out an all sky survey and make pointed observations in the 1-250 keV energy band. In order to get the source and background fluxes simultaneously in the pointed observations, two methods, i.e., the combined field of view (FOV) method and the off-axis pointing method
are proposed in this paper. Comprehensive analyses of the sensitivities of the three instruments by using these two methods are presented, respectively. It is found that the off-axis pointing method has a higher sensitivity for HE and ME but a lower sensitivity for LE. Since the axes of the three instruments are aligned along the same direction, the off-axis pointing method is recommended as the main method in the pointed observation for HXMT; the combined FOV method can be used when LE is the most relevant instrument in order to satisfy the scientific objective of the observation.

References

[1]	LI Ti-Pei,ZHANG Shuang-Nan,LU Fang-Jun.Chin.J.Space Sci,2006,26(Supp):30-41[2] LI Ti-Pei,WU Mei.Ap SS,1994,215:213[3] Rothschild R E,Blanco P R,Gruber D E et al.The Astro-physical Journal,1998,496:53S-549[4] ZHANG Shuang-Nan,Ramsden D.Experimental Astronomy,1990,1:145-163

[1]	Cen Zhang . Constraining qqtt operators from four-top production: a case for enhanced EFT sensitivity. Chinese Physics C, 2018, 42(2): 023104. doi: 10.1088/1674-1137/42/2/023104
[2]	Ju Guan , Li-Ming Song , Zhuo-Xi Huo . Application of a multiscale maximum entropy image restoration algorithm to HXMT observations. Chinese Physics C, 2016, 40(8): 086203. doi: 10.1088/1674-1137/40/8/086203
[3]	Xun-Xiu Zhou , Lan-Lan Gao , Yu Zhang , Yi-Qing Guo , Qing-Qi Zhu , Huan-Yu Jia , Dai-Hui Huang . Sensitivity study of (10,100) GeV gamma-ray bursts with double shower front events from ARGO-YBJ. Chinese Physics C, 2016, 40(7): 075001. doi: 10.1088/1674-1137/40/7/075001
[4]	Cheng-Ming Du , Jin-Da Chen , Xiu-Ling Zhang , Hai-Bo Yang , Ke Cheng , Jie Kong , Zheng-Guo Hu , Zhi-Yu Sun , Hong Su , Hu-Shan Xu . Study of time resolution by digital methods with a DRS4 module. Chinese Physics C, 2016, 40(4): 046101. doi: 10.1088/1674-1137/40/4/046101
[5]	WANG Yu-Sa , CHEN Yong , XU Yu-Peng , YANG Yan-Ji , CUI Wei-Wei , LI Mao-Shun , LIU Xiao-Yan , WANG Juan , HAN Da-Wei , CHEN Tian-Xiang , LI Cheng-Kui , HUO Jia , LI Zheng-Wei , LI Wei , HU Wei , ZHANG Yi , LU Bo , ZHU Yue , LIU Yan , WU Di , SUN Qing-Rong , ZHANG Zi-Liang . Low temperature testing and neutron irradiation of a swept charge device on board the HXMT satellite. Chinese Physics C, 2012, 36(10): 991-995. doi: 10.1088/1674-1137/36/10/013
[6]	YANG Zai-Hong , YE Yan-Lin , XIAO Jun , YOU Hai-Bo , LIU HONG-Na , SUN Ye-Lei , WANG Zi-Heng , CHEN Jie . Fast calibration methods using cosmic rays for a neutron detection array. Chinese Physics C, 2012, 36(3): 222-227. doi: 10.1088/1674-1137/36/3/006
[7]	LI Yu-Lan , LI Jin , YUE Qian , LI Yuan-Jing , . MSE/SSE discrimination methods of the PC-HPGe detector. Chinese Physics C, 2012, 36(9): 855-860. doi: 10.1088/1674-1137/36/9/011
[8]	FAN Rui-Rui , CHEN Yuan-Bo , OUYANG Qun , LIU Rong-Guang , LIU Peng , QI Hui-Rong , ZHANG Jian , ZHAO Ping-Ping , ZHAO Dong-Xu , ZHAO Yu-Bin , ZHANG Hong-Yu , SHENG Hua-Yi , DONG Li-Yuan , . Study of measuring methods on spatial resolution of a GEM imaging detector. Chinese Physics C, 2012, 36(3): 228-234. doi: 10.1088/1674-1137/36/3/007
[9]	ZHANG Yi-Fei , LI Yan-Guo , WU Bo-Bing , ZHANG Yong-Jie , DONG Yong-Wei , SUN Jian-Chao , ZHAO Dong-Hua , XING Wen , CHAI Jun-Ying , KANG Shi-Xiu , SONG Li-Ming . A study of the active thermal control for the high energy detector on the HXMT. Chinese Physics C, 2011, 35(7): 638-641. doi: 10.1088/1674-1137/35/7/008
[10]	WANG Yu-Sa , CHEN Yong , XU Yu-Peng , WANG Juan , CUI Wei-Wei , LI Wei , HAN Da-Wei , ZHANG Zi-Liang , CHEN Tian-Xiang , LI Cheng-Kui , YANG Yan-Ji , LIU Xiao-Yan , HUO Jia , ZHANG Jun-Min , ZHENG Yi-Qian . Thermal analysis and expected performance of the low energy instrument on board the HXMT satellite. Chinese Physics C, 2010, 34(12): 1812-1817. doi: 10.1088/1674-1137/34/12/005
[11]	CHENG Ze-Hao , WANG Huan-Yu , CAO Xue-Lei , ZHANG Fei , ZHANG Cheng-Mo , YANG Jia-Wei , LIANG Xiao-Hua , GAO Min , PENG Wen-Xi . Development of a prototype of the ME readout electronics onboard the HXMT satellite. Chinese Physics C, 2010, 34(2): 198-203. doi: 10.1088/1674-1137/34/2/008
[12]	J. T. Rhee , Y. J. Jeon . A simulation study of the e⁺/e^－ sensitivity of a low resistive phosphate glasselectrode in a RPC using GEANT MC. Chinese Physics C, 2010, 34(3): 359-362. doi: 10.1088/1674-1137/34/3/010
[13]	AN Feng-Peng , TIAN Xin-Chun , ZHAN Liang , CAO Jun . Systematic impact of spent nuclear fuel on θ₁₃ sensitivity at reactor neutrino experiment. Chinese Physics C, 2009, 33(9): 711-716. doi: 10.1088/1674-1137/33/9/001
[14]	JIANG Bo-Cheng , CHEN Guang-Ling , CHEN Jian-Hui , LIU Gui-Min , ZHAO Zhen-Tang . Observation of beam instability in the SSRF storage ring. Chinese Physics C, 2009, 33(S2): 75-77. doi: 10.1088/1674-1137/33/S2/019
[15]	DONG Yong-Wei , XIONG Shao-Lin , LI Yan-Guo , ZHANG Yong-Jie , WU Bo-Bing , HE Hui-Lin . HXMT Magnetic Shield Design and Test Results. Chinese Physics C, 2007, 31(1): 80-83.
[16]	JIN Ying-Kang , WU Mei , JIN Yong-Jie , ZHUANG Ren-Lin . An Optimized Collimator Scheme of HXMT. Chinese Physics C, 2007, 31(7): 612-616.
[17]	DONG Yong-Wei , WU Bo-Bing , LI Yan-Guo , ZHANG Yong-Jie , HE Hui-Lin , WU Mei . Imaging Test Setup of HXMT. Chinese Physics C, 2006, 30(5): 392-397.
[18]	HE Hui-Lin , LI Yan-Guo , WU Bo-Bing , ZHANG Cheng-Mo , WANG Jin-Zhou , ZHANG Yong-Jie , DONG Yong-Wei . Calculation of the HXMT Detector Energy Response Matrix. Chinese Physics C, 2005, 29(7): 687-690.
[19]	YI Rong-Qing , SUN Ke-Xi , YANG Guo-Hong , LIU Seng-Ye , CUI Ming-Qi , Zhao Yi-Dong , Zhu Pei-Ping . Exploration of Calibration Methods of Photoconductive Detectors Sensitivity. Chinese Physics C, 2003, 27(S1): 122-124.
[20]	Xu Xiaoji , Huang Wenxue , Ma Ruichang , Gu Zhongdao , Yang Yongfeng , Wang Yanyu , Dong Chengfu . Observation of Beta-Delayed Proton Decay of⁶⁹Kr. Chinese Physics C, 1997, 21(S1): 443-446.

Access

Get Citation

JIN Jing, CHEN Yong, ZHANG Shuang-Nan, ZHANG Shu, LI Xin-Qiao and LI Gang. A study of the pointed observation methods and sensitivity of HXMT[J]. Chinese Physics C, 2010, 34(1): 66-71. doi: 10.1088/1674-1137/34/1/012

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2009-02-18
Revised: 2009-03-11

Article Metric

Article Views(3135)
PDF Downloads(649)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

A study of the pointed observation methods and sensitivity of HXMT

Corresponding author: JIN Jing,

Received Date: 2009-02-18

Accepted Date: 2009-03-11

Available Online: 2010-01-05

Abstract:

The Hard X-ray Modulation Telescope (HXMT) is an X-ray astronomy satellite consisting of three slat-collimated instruments, the High Energy X-ray Instrument (HE), the Medium Energy X-ray Instrument (ME), and the Low Energy X-ray Instrument (LE). HXMT will carry out an all sky survey and make pointed observations in the 1-250 keV energy band. In order to get the source and background fluxes simultaneously in the pointed observations, two methods, i.e., the combined field of view (FOV) method and the off-axis pointing method
are proposed in this paper. Comprehensive analyses of the sensitivities of the three instruments by using these two methods are presented, respectively. It is found that the off-axis pointing method has a higher sensitivity for HE and ME but a lower sensitivity for LE. Since the axes of the three instruments are aligned along the same direction, the off-axis pointing method is recommended as the main method in the pointed observation for HXMT; the combined FOV method can be used when LE is the most relevant instrument in order to satisfy the scientific objective of the observation.

HTML

Reference (1)

A study of the pointed observation methods and sensitivity of HXMT

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article