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The First Insight-HXMT Gamma-Ray Burst Catalog: The First Four Years
Li, Gang; Ge, Ming-Yu; Ma, Xiang +40 more
The Hard X-ray Modulation Telescope (Insight-HXMT) is China's first X-ray astronomy satellite. It was launched on 2017 June 15. The anticoincidence CsI detectors of the High Energy X-ray telescope (HE) on board Insight-HXMT could serve as an all-sky gamma-ray monitor in about 0.2-3 MeV. In its first four years of operation, Insight-HXMT has detect…
In-orbit Timing Calibration of the Insight-Hard X-Ray Modulation Telescope
Zhang, Shu; Li, Xiaobo; Zhang, Shuang-Nan +24 more
We describe the timing system and the timing calibration results of the three payloads on board the Insight-Hard X-ray Modulation Telescope (Insight-HXMT). These three payloads are the High Energy X-ray telescope (HE; 20-250 keV), the Medium Energy X-ray telescope (ME; 5-30 keV), and the Low Energy X-ray telescope (LE; 1-10 keV). We present a meth…
Linking Extragalactic Transients and Their Host Galaxy Properties: Transient Sample, Multiwavelength Host Identification, and Database Construction
French, K. Decker; Zabludoff, Ann; Behroozi, Peter +7 more
Understanding the preferences of transient types for host galaxies with certain characteristics is key to studies of transient physics and galaxy evolution, as well as to transient identification and classification in the LSST era. Here we describe a value-added database of extragalactic transients-supernovae, tidal disruption events, gamma-ray bu…
Robust Inference of Neutron-star Parameters from Thermonuclear Burst Observations
Galloway, Duncan K.; Goodwin, Adelle; Johnston, Zac +1 more
Thermonuclear (type-I) bursts arise from unstable ignition of accumulated fuel on the surface of neutron stars in low-mass X-ray binaries. Measurements of burst properties in principle enable observers to infer the properties of the host neutron star and mass donors, but a number of confounding astrophysical effects contribute to systematic uncert…
The Second Catalog of Interplanetary Network Localizations of Konus Short-duration Gamma-Ray Bursts
Mitrofanov, I.; Hurley, K.; Yamaoka, K. +72 more
We present the catalog of InterPlanetary Network (IPN) localizations for 199 short-duration gamma-ray bursts (sGRBs) detected by the Konus-Wind (KW) experiment between 2011 January 1 and 2021 August 31, which extends the initial sample of IPN-localized KW sGRBs to 495 events. We present the most comprehensive IPN localization data on these events,…
The Diffuse X-Ray Background of the Insight-HXMT/LE Telescope in the Galactic Plane
Zhang, Shu; Zhang, Shuang-Nan; Liu, Yuan +11 more
Accurately estimating of diffuse X-ray background (DXB) is essential for the investigation of sources in the Galactic plane observed with Insight-HXMT/LE, which is a collimated telescope in the soft X-ray energy band with a relatively large field of view. In the high-Galactic-latitude region, DXB is dominated by the cosmic X-ray background, which …