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相关论文: EXIST's Gamma-Ray Burst Sensitivity

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{\it ProtoEXIST1} is a pathfinder for the {\it EXIST-HET}, a coded aperture hard X-ray telescope with a 4.5 m$^2$ CZT detector plane a 90$\times$70 degree field of view to be flown as the primary instrument on the {\it EXIST} mission and is…

The NeXT mission has been proposed to study high-energy non-thermal phenomena in the universe. The high-energy response of the super mirror will enable us to perform the first sensitive imaging observations up to 80 keV. The focal plane…

Observations of Gamma-Ray Bursts with the Fermi Large Area Telescope have prompted theoretical advances and posed big challenges in the understanding of such extreme sources, despite the fact that GRB emission above 100 MeV is a fairly rare…

高能天体物理现象 · 物理学 2015-02-12 Giacomo Vianello , Nicola Omodei , Fermi/LAT collaboration

We compute the probability to detect long Gamma Ray Bursts (GRBs) at z>5 with Swift, assuming that GRBs form preferentially in low-metallicity environments. The model fits well both the observed BATSE and Swift GRB differential peak flux…

天体物理学 · 物理学 2009-11-13 R. Salvaterra , S. Campana , G. Chincarini , G. Tagliaferri , S. Covino

Supergiant Fast X-ray Transients (SFXTs) are one of the most intriguing (and unexpected) results of the INTEGRAL mission. They are a new class of High Mass X-ray Binaries involving about 20 sources to date, with 8 firmly identified SFXTs…

天体物理仪器与方法 · 物理学 2010-01-20 L. Sidoli , V. Sguera , A. Bazzano , P. Ubertini

The Einstein Probe (EP) satellite, dedicated at time-domain high-energy astrophysics and multi-messenger astronomy, was recently launched and successfully put into operation. The wide-field X-ray telescope (WXT, 0.5-4 keV) onboard has…

高能天体物理现象 · 物理学 2025-04-22 Hao-Xuan Gao , Jin-Jun Geng , Yi-Fang Liang , Hui Sun , Fan Xu , Xue-Feng Wu , Yong-Feng Huang , Zi-Gao Dai , Wei-Min Yuan

Owing to narrow energy band of \textit{Swift}/BAT, several urgent issues are required to pay more attentions but unsolved so far. We systematically study the properties of a refined sample of 283 \textit{Swift}/BAT gamma-ray bursts with…

高能天体物理现象 · 物理学 2021-08-30 Z. B. Zhang , M. Jiang , Y. Zhang , K. Zhang , X. J. Li , Q. Zhang

We examine the rest frame energetics of 76 gamma-ray bursts (GRBs) with known redshift that were detected by the Swift spacecraft and monitored by the satellite's X-ray Telescope (XRT). Using the bolometric fluence values estimated in…

天体物理学 · 物理学 2009-11-13 Daniel Kocevski , Nathaniel Butler

It is often stated that gamma-ray bursts (GRBs) have typical energies of several hundreds $\keV$, where the typical energy may be characterized by the hardness H, the photon energy corresponding to the peak of $\nu F_{\nu}$. Among the 54…

天体物理学 · 物理学 2009-10-30 Ehud Cohen , Tsvi Piran , Ramesh Narayan

We are constructing a program to estimate the redshifts for GRBs from the original Swift light curves and spectra, aiming to get redshifts for the Swift bursts \textit{without} spectroscopic or photometric redshifts. We derive the…

宇宙学与河外天体物理 · 物理学 2014-11-20 Limin Xiao , Bradley E. Schaefer

Several claims have been put forward that an essential fraction of long-duration BATSE gamma-ray bursts should lie at redshifts larger than 5. This point-of-view follows from the natural assumption that fainter objects should, on average,…

高能天体物理现象 · 物理学 2012-09-13 Jakub Ripa , Attila Meszaros , Felix Ryde

After almost 4 years of operation, the two instruments onboard the Fermi Gamma-ray Space Telescope have shown that the number of gamma-ray bursts with high energy photon emission above 100 MeV cannot exceed roughly 9% of the total number of…

高能天体物理现象 · 物理学 2015-06-05 Carl W. Akerlof , WeiKang Zheng

We assess the possibility to detect and characterize the physical state of the missing baryons at low redshift by analyzing the X-ray absorption spectra of the Gamma Ray Burst [GRB] afterglows, measured by a micro calorimeters-based…

We report on the first completely simultaneous observation of a gamma-ray burst (GRB) using an array of Imaging Atmospheric Cherenkov Telescopes which is sensitive to photons in the very-high-energy (VHE) gamma-ray range (>~100 GeV). On…

天体物理学 · 物理学 2008-12-18 HESS Collaboration , F. Aharonian

A small air shower array operating over many years has been used to search for ultra-high energy (UHE) gamma radiation ($\geq 50$ TeV) associated with gamma-ray bursts (GRBs) detected by the BATSE instrument on the Compton Gamma-Ray…

天体物理学 · 物理学 2009-10-28 S. P. Plunkett , M. Delaney , B. McBreen , K. J. Hurley , C. T. O'Sullivan

The unique capabilities of Swift that make it ideal for discovery and follow-up of Gamma-Ray bursts also makes it the idea mission for discovery and monitoring of X-ray Transients in the Milky Way and the Large and Small Magellanic Clouds.…

高能天体物理现象 · 物理学 2015-03-27 Jamie A. Kennea

Aims. Fast Radio Bursts are bright radio transients whose origin has not yet explained. The search for a multi-wavelength counterpart of those events can put a tight constrain on the emission mechanism and the progenitor source. Methods. We…

It is usual, in gamma-ray burst (GRB) studies, to compare the average properties of bright and faint GRBs, with the assumption that brightness classes reflect distance classes. When brightness is intented to reflect the distance to the…

天体物理学 · 物理学 2008-02-03 J-L. Atteia