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浏览/检索结果: 共7条，第1-7条 帮助

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Ready for O4 II: GRANDMA observations of Swift GRBs over eight weeks in spring 2022 期刊论文  OAI收割
ASTRONOMY & ASTROPHYSICS, 2024, 卷号: 682
作者:  Melo, I. Tosta e;  Ducoin, J.-G.;  Vidadi, Z.
  |  收藏  |  浏览/下载：23/0  |  提交时间：2024/03/29
Overview to the Hard X-ray Modulation Telescope (Insight-HXMT) Satellite 期刊论文  OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2020, 卷号: 63, 期号: 4, 页码: 18
作者:  Zhang, Shuang-Nan;  Li, TiPei;  Lu, FangJun;  Song, LiMing;  Xu, YuPeng
  |  收藏  |  浏览/下载：80/0  |  提交时间：2021/12/06
Overview to the Hard X-ray Modulation Telescope (Insight-HXMT) Satellite 期刊论文  OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2020, 卷号: 63, 期号: 4, 页码: 18
作者:  Zhang, Shuang-Nan;  Li, TiPei;  Lu, FangJun;  Song, LiMing;  Xu, YuPeng
  |  收藏  |  浏览/下载：66/0  |  提交时间：2021/12/06
Constraining the X-Ray-Infrared Spectral Index of Second-timescale Flares from SGR 1935+2154 with Palomar Gattini-IR 期刊论文  OAI收割
The Astrophysical Journal, 2020, 卷号: 901, 页码: L7
作者:  HXMT
  |  收藏  |  浏览/下载：24/0  |  提交时间：2022/02/08
Radio transient sources  Magnetars  Soft gamma-ray repeaters  2008  992  1471  Astrophysics - High Energy Astrophysical Phenomena  Astrophysics - Instrumentation and Methods for Astrophysics  Abstract: The Galactic magnetar SGR 1935+2154 has been reported to produce the first example of a bright millisecond-duration radio burst (FRB 200428) similar to the cosmological population of fast radio bursts (FRBs). The detection of a coincident bright X-ray burst represents the first observed multiwavelength counterpart of an FRB. However, the search for similar emission at optical wavelengths has been hampered by the high inferred extinction on the line of sight. Here, we present results from the first search for second-timescale emission from the source at near-infrared (NIR) wavelengths using the Palomar Gattini-IR observing system in the J band, enabled by a novel detector readout mode that allows short exposure times of ?0.84 s with 99.9% observing efficiency. With a total observing time of ?12 hr (?47,728 images) during its 2020 outburst, we place median 3Ҡlimits on the second-timescale NIR fluence of ?18 Jy ms (13.1 AB mag). The corresponding extinction-corrected limit is ?125 Jy ms for an estimated extinction of AJ = 2.0 mag. Our observations were sensitive enough to easily detect an NIR counterpart of FRB 200428 if the NIR emission falls on the same power law as observed across its radio to X-ray spectrum. We report nondetection limits from epochs of four simultaneous X-ray bursts detected by the Insight-HXMT and NuSTAR telescopes during our observations. These limits provide the most stringent constraints to date on fluence of flares at 1014 Hz, and constrain the fluence ratio of the NIR emission to coincident X-ray bursts to RNIR ? 0.025 (fluence index ?0.35).  
Internal alignment and position resolution of the silicon tracker of DAMPE determined with orbit data 期刊论文  OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2018, 卷号: 893, 页码: 43-56
作者:  Tykhonov, A.;  Ambrosi, G.;  Asfandiyarov, R.;  Azzarello, P.;  Bernardini, P.
  |  收藏  |  浏览/下载：50/0  |  提交时间：2019/04/08
Internal alignment and position resolution of the silicon tracker of DAMPE determined with orbit data 期刊论文  OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2018, 卷号: 893, 页码: 43-56
作者:  Lei, SJ;  Li, X;  Loparco, F;  Marsella, G;  Mazziotta, MN
  |  收藏  |  浏览/下载：41/0  |  提交时间：2019/07/11
A low-energy sensitive compact gamma-ray detector based on LaBr3 and SiPM for GECAM 期刊论文  OAI收割
JOURNAL OF INSTRUMENTATION, 2018, 卷号: 13, 页码: P08014
作者:  Xiong, SL;  Xiong SL(熊少林);  Sun XL(孙希磊);  Lv JG(吕军光);  Lv, P
  |  收藏  |  浏览/下载：41/0  |  提交时间：2019/09/24