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We report the GeV $\gamma$-ray emission around the composite supernova remnant (SNR) CTB 87 with more than 16 yrs PASS 8 data recorded by the Fermi Large Area Telescope. Two separate point sources with the different GeV spectra are…

高能天体物理现象 · 物理学 2025-02-07 Yuliang Xin , Jian Tang , Weixiong Ding , Xi Liu , Yunfeng Zhang , Xiaolei Guo

The pulsar wind nebula CTB 87 (G74.9+1.2) is one of the sources emitting $\gamma$-rays with energies higher than 10 TeV, as measured by the Very Energetic Radiation Imaging Telescope Array System telescope (VERITAS). In this study, we…

高能天体物理现象 · 物理学 2025-02-06 Gong Yunlu , Zhou Liancheng , Xia Qi , Zhang Haiyun , Fang Jun , Zhang Li

eHWC J2019+368 is one of the sources emitting $\gamma$-rays with energies higher than 100 TeV based on the recent measurement with the High Altitude Water Cherenkov Observatory (HAWC), and the origin is still in debate. The pulsar PSR…

高能天体物理现象 · 物理学 2020-10-07 Jun Fang , Lu Wen , Huan Yu , Chen Songzhan

Pulsar wind nebulae (PWNe) studies with the Chandra X-ray Observatory have opened a new window to address the physics of pulsar winds, zoom on their interaction with their hosting supernova remnant (SNR) and interstellar medium, and…

高能天体物理现象 · 物理学 2015-06-16 H. Matheson , S. Safi-Harb , R. Kothes

In this study, we report the likely GeV {\gamma}-ray emissions originating from the pulsar PSR J1849-0001's pulsar wind nebula (PWN) G32.64+0.53. Our analysis covers approximately 14.7 years of data from the Fermi Large Area Telescope…

高能天体物理现象 · 物理学 2024-08-14 Yifan Xiao , Keyao Wu , Jun Fang

Analysis of gamma-ray emission from the supernova remnant G78.2+2.1 ($\gamma$ Cygni) with 7.2 years of cumulative data from the Fermi-LAT telescope shows a distinct hard, bright and extended component to the north of the shell coincident…

高能天体物理现象 · 物理学 2016-07-27 Nissim Fraija , Miguel Araya

We report a detection of GeV $\gamma$-ray emission potentially originating from the pulsar wind nebula in CTA 1 by analyzing about 15 yr of Fermi Large Area Telescope data. By selecting an energy range from 50 GeV to 1 TeV to remove…

高能天体物理现象 · 物理学 2024-03-12 Liancheng Zhou , Keyao Wu , Yunlu Gong , Jun Fang

We present a Chandra X-ray observation of G12.82-0.02, a shell-like radio supernova remnant coincident with the TeV gamma-ray source HESS J1813-178. We resolve the X-ray emission from the co-located ASCA source into a point source…

天体物理学 · 物理学 2009-06-23 D. J. Helfand , E. V. Gotthelf , J. P. Halpern , F. Camilo , D. R. Semler , R. H. Becker , R. L. White

CTB 80 (G69.0+2.7) is a relatively old (50--80 kyr) supernova remnant (SNR) with a complex radio morphology showing three extended radio arms and a radio and X-ray nebula near the location of the pulsar PSR B1951+32. We report on a study of…

高能天体物理现象 · 物理学 2021-01-20 M. Araya , C. Herrera

We report on a possible association of the recently discovered very high-energy $\gamma$-ray source HESS J1825--137 with the pulsar wind nebula (commonly referred to as G 18.0--0.7) of the $2.1\times 10^{4}$ year old Vela-like pulsar PSR…

天体物理学 · 物理学 2015-06-24 HESS Collaboration , F. A. Aharonian

We announce the discovery of 1 - 100 GeV gamma-ray emission from the archetypal TeV pulsar wind nebula HESS J1825-137 using 20 months of survey data from the Fermi Large Area Telescope (LAT). The gamma-ray emission detected by the LAT is…

Many of the recently discovered TeV gamma-ray sources are associated with pulsar wind nebulae (PWNe). In fact, they represent the most populous class of Galactic sources at TeV energies. In addition, HESS has also discovered, in a survey of…

天体物理学 · 物理学 2009-11-13 Chulhoon Chang , Alexander Konopelko , Wei Cui

We present an X-ray study of the field containing the extended TeV source HESS J1834-087 using data obtained with the XMM-Newton telescope. Previously, the coincidence of this source with both the shell-type supernova remnant (SNR) W41 and…

天体物理学 · 物理学 2011-02-11 R. Mukherjee , E. V. Gotthelf , J. P. Halpern

We estimate the TeV gamma-ray fluxes expected from the population of young pulsars in terms of the self-consistent time dependent hadronic-leptonic model for the high energy processes inside the pulsar wind nebulae. This radiation model…

天体物理学 · 物理学 2009-11-13 W. Bednarek , M. Bartosik

We carry out high-energy studies of the region of the Galactic TeV source 3HWC J1954+286, whose location coincides with those of PSR~J1954+2836 and supernova remnant (SNR) G65.1+0.6. Analyzing the GeV $\gamma$-ray data obtained with the…

高能天体物理现象 · 物理学 2022-05-25 Y. Xing , D. Zheng , Z. Wang , X. Zhang , Y. Chen , G. Xiang

We present multiwavelength studies of the 106.6 ms gamma-ray pulsar PSR J1907+06 near the TeV source MGRO J1908+06. Timing observations with Fermi result in a precise position determination for the pulsar of R.A. = 19h07m547(2), decl. =…

高能天体物理现象 · 物理学 2015-05-14 Fermi LAT Collaboration , the Fermi Pulsar Timing Consortium , : , A. A. Abdo

We present a Chandra X-ray observation of G12.82-0.02, a shell-like radio supernova remnant coincident with the TeV gamma-ray source HESS J1813-178. We resolve the X-ray emission from the co-located ASCA source into a compact object…

天体物理学 · 物理学 2008-11-26 E. V. Gotthelf , D. J. Helfand

CTB 87 (G74.9+1.2) is an evolved supernova remnant (SNR) which hosts a peculiar pulsar wind nebula (PWN). The X-ray peak is offset from that observed in radio and lies towards the edge of the radio nebula. The putative pulsar,…

The Pulsar Wind Nebula (PWN) 3C 58 is energized by one of the highest spin-down power pulsars known (5% of Crab pulsar) and it has been compared to the Crab Nebula due to their morphological similarities. This object was detected by…

高能天体物理现象 · 物理学 2016-08-07 O. Blanch Bigas , R. Lopez , E. Carmona , MAGIC Collaboration , M. A. Pérez-Torres

We present the first detection of GeV $\gamma$-ray emission potentially associated with the pulsar wind nebula (PWN) hosted by the young core-collapse supernova remnant G292.0+1.8, based on a detailed time-resolved analysis of…

高能天体物理现象 · 物理学 2025-10-29 A. Lemière , G. Castelletti , N. L. Maza
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