中国科学院机构知识库网格系统: 检索

X-ray performance of a small pixel size sCMOS sensor and the effect of depletion depth 期刊论文 OAI收割
JOURNAL OF INSTRUMENTATION, 2022, 卷号: 17, 期号: 12, 页码: P12006
作者: Hsiao, Y; Ling, Z; Zhang, C; Wang, W; Zhou, Q

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收藏 | 浏览/下载：4/0 | 提交时间：2023/11/10

Solid state detectors X-ray detectors X-ray detectors and telescopes

Damping signatures at JUNO, a medium-baseline reactor neutrino oscillation experiment 期刊论文 OAI收割
JOURNAL OF HIGH ENERGY PHYSICS, 2022, 期号: 6, 页码: 62
作者: JUNO Collaboration

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收藏 | 浏览/下载：27/0 | 提交时间：2023/03/13

Neutrino Detectors and Telescopes (experiments)

Combined sensitivity of JUNO and KM3NeT/ORCA to the neutrino mass ordering 期刊论文 OAI收割
JOURNAL OF HIGH ENERGY PHYSICS, 2022, 期号: 3
作者: Aiello, S; Albert, A; Alshamsi, M; Garre, SA; Aly, Z

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收藏 | 浏览/下载：20/0 | 提交时间：2023/03/27

Neutrino Detectors and Telescopes (experiments) Oscillation

Calibration strategy of the JUNO experiment 期刊论文 OAI收割
JOURNAL OF HIGH ENERGY PHYSICS, 2021, 期号: 3
作者: Abusleme, Angel; Adam, Thomas; Ahmad, Shakeel; Ahmed, Rizwan; Aiello, Sebastiano

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收藏 | 浏览/下载：21/0 | 提交时间：2023/03/16

Neutrino Detectors and Telescopes (experiments)

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

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收藏 | 浏览/下载：16/0 | 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 A_J = 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 R_NIR ? 0.025 (fluence index ?0.35).

Comparison of simulated backgrounds with in-orbit observations for HE, ME, and LE onboard Insight-HXMT 期刊论文 OAI收割
Astrophysics and Space Science, 2020, 卷号: 365, 页码: 158
作者: HXMT

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收藏 | 浏览/下载：36/0 | 提交时间：2022/02/08

Insight-HXMT Geant4 simulation Background observation Astrophysics - Instrumentation and Methods for Astrophysics Abstract: Insight-HXMT, the first X-ray astronomical satellite in China, aims to reveal new sources in the Galaxy and to study fundamental physics of X-ray binaries from 1 to 250 keV. It has three collimated telescopes, the High Energy X-ray telescope (HE), the Medium Energy X-ray telescope (ME), and the Low Energy X-ray telescope (LE). Before the launch, in-orbit backgrounds of these three telescopes had been estimated through Geant4 simulation, in order to investigate the instrument performance and the achievement of scientific goals. In this work, these simulated backgrounds are compared with in-orbit observations. Good agreements are shown for all three telescopes. For HE, (1) the deviation of the simulated background rate after two years of operation in space is 5 % from the observation (2) the total background spectrum and the relative abundance of the 67 keV line show long-term increases both in simulations and observations. For ME, (1) the deviation of simulated background rate is within 15 % from the observation, and (2) there are no obvious long-term increase features in the background spectra of simulations and observations. For LE, the background level given by simulations is also consistent with observations. The consistencies of these comparisons validate that the Insight-HXMT mass model, i.e., space environment components and models adopted, physics processes selected, and detector constructions built, is reasonable. However, the line features at 7.5 and 8.0 keV, which are obvious in the observed spectra of LE, are not evident in simulations. This might result from uncertainties in the LE constructions.

In-orbit Demonstration of X-Ray Pulsar Navigation with the Insight-HXMT Satellite 期刊论文 OAI收割
The Astrophysical Journal Supplement Series, 2019, 卷号: 244, 页码: 1
作者: HXMT

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收藏 | 浏览/下载：6/0 | 提交时间：2022/02/08

pulsars: general techniques: miscellaneous Astrophysics - Instrumentation and Methods for Astrophysics Abstract: In this work, we report the in-orbit demonstration of X-ray pulsar navigation with Insight-Hard X-ray Modulation Telescope (Insight-HXMT) Satellite, which was launched on 2017 June 15. The new pulsar navigation method Significance Enhancement of Pulse-profile with Orbit-dynamics is adopted to determine the orbit with observations of only one pulsar. In this test, the Crab pulsar is chosen and observed by Insight-HXMT from 2017 August 31 to September 5. Using the five-day long observation data, the orbit of Insight-HXMT is determined successfully with the three telescopes onboard: High Energy X-ray Telescope, Medium Energy X-ray Telescope, and Low Energy X-ray Telescope, respectively. By combining all the data, the position and velocity of the Insight-HXMT are pinpointed to within 10 km (3ҩ and 10 m s^-1 (3ҩ, respectively.

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

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收藏 | 浏览/下载：35/0 | 提交时间：2019/07/11

Cosmic-ray detectors Gamma-ray telescopes Alignment Silicon-strip detectors

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

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收藏 | 浏览/下载：33/0 | 提交时间：2019/09/24

Gamma detectors (scintillators, CZT, HPG, HgI etc) Gamma telescopes X-ray detectors

Design and performance study of the HEPP-H calorimeter onboard the CSES satellite 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2018, 卷号: 18, 期号: 12, 页码: 154
作者: Zhang DL(张大力); Zhao XY(赵小芸); Nan, YF; An ZH(安正华); Li HX(李航旭)

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收藏 | 浏览/下载：99/0 | 提交时间：2019/10/11

telescopes instrumentation: detectors site testing