Results 41 to 50 of about 207,538 (259)
Revision of the γ-Ray Emission from SNR CTB 109 with the Fermi Large Area Telescope
The Astrophysical Journal, 2023 CTB 109 is a middle-aged shell-type supernova remnant (SNR) with bright thermal X-ray emission. We reanalyze the GeV γ -ray emission from CTB 109 using 13 yr of Pass 8 data recorded by the Fermi Large Area Telescope.
Yuliang Xin, Qizhen Zhao, Xiaolei Guo
doaj +1 more source
Development and validation of an astronomy self-efficacy instrument for understanding and doing [PDF]
Physical Review Physics Education Research, 18(1), 010117, 2022 This paper presents a new astronomy self efficacy instrument, composed of two factors, one relating to learning astronomy content, which we call astronomy personal self efficacy, and the other relating to the use of astronomical instrumentation, specifically the use of remote robotic telescopes for data collection.
arxiv +1 more source
The Astrophysical Journal, 2023 We present an analysis of γ -ray emission in the direction of supernova remnant (SNR) G15.4+0.1 with 13 yr Fermi Large Area Telescope data. There are three point-like GeV sources in this region: one is spatially coincident with the TeV source HESS J1818 ...
Yuan Li, Yuliang Xin, Siming Liu, Yu He
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The future of astronomy with small satellites [PDF]
Nature Astronomy volume 4, pages 1031-1038 (2020), 2020 The number of small satellites has grown dramatically in the past decade from tens of satellites per year in the mid-2010s to a projection of tens of thousands in orbit by the mid-2020s. This presents both problems and opportunities for observational astronomy.
arxiv +1 more source
Possible Evidence for Lorentz Invariance Violation in Gamma-Ray Burst 221009A
The Astrophysical Journal Letters, 2023 The preliminary detections of the gamma-ray burst 221009A up to 18 TeV by LHAASO and up to 251 TeV by Carpet 2 have been reported through Astronomer’s Telegrams and Gamma-ray Coordination Network circulars.
Justin D. Finke, Soebur Razzaque
doaj +1 more source
From gamma-ray bursts to fast radio bursts [PDF]
Nature Astronomy, volume 2, 832-835 (2018), 2018 The field of gamma-ray burst astronomy arguably went through three decades of growing pains before reaching maturity. What development lessons can be learned for the adolescent field of fast radio burst astronomy?
arxiv +1 more source
Eventdisplay: An Analysis and Reconstruction Package for Ground-based Gamma-ray Astronomy [PDF]
, 2017 Eventdisplay is a software package for the analysis and reconstruction of data and Monte Carlo events from ground-based gamma-ray observatories such as VERITAS and CTA.
G. Maier, J. Holder
semanticscholar +1 more source
Status and recent high light results from the LHAASO experiment [PDF]
EPJ Web of ConferencesThe Large High Altitude Air Shower Observatory (LHAASO) experiment, fully operational since July 2021, is a cutting-edge facility for detecting cosmic rays and gamma rays across a wide energy range. This paper offers an overview of the current status and
Chen Songzhan
doaj +1 more source
Investigating Time Variability of X-Ray Absorption in Swift GRBs
The Astrophysical Journal, 2023 The existence of excess absorption in the X-ray spectra of GRBs is well known, but the primary location of the absorbing material is still uncertain. To gain more knowledge about this, we have performed a time-resolved analysis of the X-ray spectra of ...
Vlasta Valan +2 more
doaj +1 more source
Astrophotonics: the rise of integrated photonics in astronomy [PDF]
Optics & Photonics News (2019), 2019 Astronomers have come to recognize the benefits of photonics, often in combination with optical systems, in solving longstanding experimental problems in Earth-based astronomy. Here, we explore some of the recent advances made possible by integrated photonics. We also look to the future with a view to entirely new kinds of astronomy, particularly in an
arxiv +1 more source