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We present the analysis of Fermi Large Area Telescope (LAT) {\gamma}-ray observations of HB 21, a mixed-morphology supernova remnant. Such supernova remnants are characterized by an interior thermal X-ray plasma, surrounded by a wider…

高能天体物理现象 · 物理学 2019-08-14 G. Pivato , J. W. Hewitt , L. Tibaldo

The discovery of bright gamma-ray emission coincident with supernova remnant (SNR) W51C is reported using the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. W51C is a middle-aged remnant (~10^4 yr) with intense…

高能天体物理现象 · 物理学 2012-08-27 Fermi LAT collaboration

A 5.5-year Fermi LAT gamma-ray observation shows significant extended emission at the position of the supernova remnant HB9 (G160.9+2.6). The significance of the detection above the background for photon energies above 0.2 GeV is…

高能天体物理现象 · 物理学 2015-06-19 Miguel Araya

We investigate the nature of the accelerated particles responsible for the production of the gamma-ray emission observed from the middle-aged supernova remnant (SNR) HB 21. The analysis of more than nine years of Fermi LAT data leads to the…

高能天体物理现象 · 物理学 2019-02-19 L. Ambrogi , R. Zanin , S. Casanova , E. De Ona Wilhelmi , G. Peron , F. Aharonian

We present an analysis of the gamma-ray data obtained with the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope in the direction of SNR W49B (G43.3-0.2). A bright unresolved gamma-ray source detected at a significance…

高能天体物理现象 · 物理学 2015-05-19 LAT Collaboration

We analyze 3.5 years of public Fermi/LAT data around the position of the supernova remnant HB 21, where four point-like sources from the 2nd Fermi/LAT catalog are located. We determine that the gamma-ray source is produced by a single…

高能天体物理现象 · 物理学 2012-10-01 Ignasi Reichardt , Emma de Oña Wilhelmi , Javier Rico , Rui-zhi Yang

CTB 109 (G109.1-1.0) is a Galactic supernova remnant (SNR) with a hemispherical shell morphology in X-rays and in the radio band. In this work we report the detection of {\gamma}-ray emission coincident with CTB 109, using 37 months of data…

高能天体物理现象 · 物理学 2015-06-05 Daniel Castro , Patrick Slane , Donald C. Ellison , Daniel J. Patnaude

We present detailed analysis of the two gamma-ray sources,1FGL J1801.3-2322c and 1FGL J1800.5-2359c,that have been found toward the supernova remnant(SNR) W28 with the Large Area Telescope(LAT) on board the Fermi Gamma-ray Space…

高能天体物理现象 · 物理学 2016-04-13 LAT Collaboration , A. A. Abdo

Gamma-ray emission provides constraints on the non-thermal radiation processes at play in astrophysical particle accelerators. This allows both the nature of accelerated particles and the maximum energy that they can reach to be determined.…

高能天体物理现象 · 物理学 2023-11-06 Pauline Chambery , Marianne Lemoine-Goumard , Armelle Jardin-Blicq , Atreyee Sinha , J. Eagle

With the 15 yrs of Pass 8 data recorded by the {\em Fermi} Large Area Telescope, we report the detection of an extended gigaelectronvolt emission component with a 68\% containment radius of $0^{\circ}\!.85$, which is spatially associated…

高能天体物理现象 · 物理学 2024-11-01 Xiaolei Guo , Xi Liu

This work reports on the detection of $\gamma$-ray emission coincident with the supernova remnant (SNR) SNR G5.7-0.1 using data collected by the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. The SNR is believed to be…

高能天体物理现象 · 物理学 2016-01-13 Timothy Joubert , Daniel Castro , Patrick Slane , Joseph Gelfand

We report on gamma-ray observations of the supernova remnant (SNR) RX J0852.0-4622 with the Large Area Telescope (LAT) aboard the Fermi Gamma-ray Space Telescope. In the Fermi LAT data, we find a spatially extended source at the location of…

高能天体物理现象 · 物理学 2011-10-06 T. Tanaka , A. Allafort , J. Ballet , S. Funk , F. Giordano , J. Hewitt , M. Lemoine-Goumard , H. Tajima , O. Tibolla , Y. Uchiyama

We report the extended GeV $\gamma$-ray emission around the high Galactic latitude supernova remnant (SNR) DA 530 with the PASS 8 data recorded by the Fermi Large Area Telescope (Fermi-LAT). The $\gamma$-ray spectrum in the energy range of…

高能天体物理现象 · 物理学 2023-09-13 Yuliang Xin , Xiaolei Guo

We report the detection of GeV \gamma-ray emission from the supernova remnant Puppis A with the Fermi Gamma-Ray Space Telescope. Puppis A is among the faintest supernova remnants yet detected at GeV energies, with a luminosity of only…

高能天体物理现象 · 物理学 2015-06-11 J. W. Hewitt , M. -H. Grondin , M. Lemoine-Goumard , T. Reposeur , J. Ballet , T. Tanaka

In three years of observations since the beginning of nominal science operations in August 2008, the Large Area Telescope (LAT) on board the Fermi Gamma Ray Space Telescope has observed high-energy (>20 MeV) \gamma-ray emission from 35…

高能天体物理现象 · 物理学 2015-06-15 LAT Collaboration

We present a detailed investigation of the $\gamma$-ray emission in the vicinity of the supernova remnant (SNR) W28 (G6.4$-$0.1) observed by the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope. We detected significant…

We present a detailed analysis of the GeV gamma-ray emission toward the supernova remnant (SNR) G8.7-0.1 with the Large Area Telescope (LAT) onboard the \emph{Fermi} Gamma-ray Space Telescope. An investigation of the relationship among…

高能天体物理现象 · 物理学 2015-05-30 LAT Collaboration

We report the discovery of extended gamma-ray emission measured by the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope in the region of the supernova remnant (SNR) HB3 (G132.7+1.3) and the W3 HII complex adjacent to…

高能天体物理现象 · 物理学 2016-02-17 H. Katagiri , K. Yoshida , J. Ballet , M. H. Grondin , Y. Hanabata , J. W. Hewitt , H. Kubo , M. Lemoine-Goumard

In this paper, we report the first extended GeV $\gamma$-ray emission, at a significant level of $\sim$ 8.13$\sigma$, from the region of the supernova remnant (SNR) SNR G317.3-0.2 by analyzing $\sim$ 12.2 years of Fermi Large Area Telescope…

高能天体物理现象 · 物理学 2021-04-21 Yunchuan Xiang , Zejun Jiang , Yunyong Tang

We examine 288 GRBs detected by the Fermi Gamma-ray Space Telescope's Gamma-ray Burst Monitor (GBM) that fell within the field-of-view of Fermi's Large Area Telescope (LAT) during the first 2.5 years of observations, which showed no…

高能天体物理现象 · 物理学 2015-06-03 LAT Collaboration , GBM Collaboration
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