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Aims. We report the first detailed X-ray study of the supernova remnant (SNR) G304.6+0.1, achieved with the XMM-Newton mission. Methods. The powerful imaging capability of XMM-Newton was used to study the X-ray characteristics of the…

This paper reports the first discovery of TeV gamma-ray emission from a supernova remnant made with the CANGAROO 3.8 m Telescope. TeV gamma rays were detected at the sky position and extension coincident with the north-east (NE) rim of…

The shell type SNR RXJ1713.7-3946 is a new SNR discovered by the ROSAT all sky survey. Recently, strong non-thermal X-ray emission from the northwest part of the remnant was detected by the ASCA satellite. This synchrotron X-ray emission…

Observations of the supernova remnant G22.7-0.2 in the field of view of W41 with the H.E.S.S. telescope array have resulted in evidence for a very high energy (VHE) gamma-ray emission from the direction of the object. The emission region is…

We report the discovery of diffuse radio emission within SNR G338.3-0.0 using new MeerKAT observations at 816 MHz and 1.4 GHz. The radio emission spatially overlaps with the X-ray pulsar wind nebula (PWN) powered by PSR J1640-4631 and the…

High Energy Astrophysical Phenomena · Physics 2025-08-27 Moaz Abdelmaguid , Joseph Gelfand , Jason Alford

Supernovae remnants (SNRs) represent a major feedback source from stars on the interstellar medium of galaxies. During the latest stage of supernovae explosions, shock waves produced by the initial blast modify the chemistry of gas and…

AIMS: HESS J1844-030 is a newly confirmed TeV source in the direction of the X-ray pulsar wind nebula (PWN) candidate G29.4+0.1 and the complex radio source G29.37+0.1, which is likely formed by the superposition of a background radio…

High Energy Astrophysical Phenomena · Physics 2019-06-19 Alberto Petriella

Emission mechanisms of the shell-type supernova remnant (SNR) RX J1713.7-3946 are studied with multi-wavelength observational data from radio, X-ray, GeV $\gamma$-ray to TeV $\gamma$-ray band. A Markov Chain Monte Carlo method is employed…

High Energy Astrophysical Phenomena · Physics 2011-06-28 Qiang Yuan , Siming Liu , Zhonghui Fan , Xiaojun Bi , Christopher L. Fryer

We present X-ray and 12CO(J=1-0) observations of the very-high-energy (VHE) gamma-ray source HESS J1813-178 with the aim of understanding the origin of the gamma-ray emission. Using this dataset we are able to undertake spectral and…

We report on the investigation of a very high energy (VHE), Galactic gamma-ray source recently discovered at >50GeV using the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope. This object, 2FHL J1703.4-4145, displays…

High Energy Astrophysical Phenomena · Physics 2020-12-02 J. Eagle , S. Marchesi , M. Ajello , D. Castro , A. Vendrasco

HESS J1912+101 is a shell-like TeV source that has no clear counterpart in multiwavelength. Using CO and H i data, we reveal that VLSR~+60 km/s molecular clouds (MCs), together with shocked molecular gas and high-velocity neutral atomic…

Astrophysics of Galaxies · Physics 2017-08-23 Yang Su , Xin Zhou , Ji Yang , Yang Chen , Xuepeng Chen , Yan Gong , Shaobo Zhang

G279.0+1.1 is a supernova remnant (SNR) with poorly known parameters, first detected as a dim radio source and classified as an evolved system. An analysis of data from the Fermi-LAT revealing for the first time an extended source of gamma…

High Energy Astrophysical Phenomena · Physics 2020-02-05 Miguel Araya

The remnant G347.3-0.5 exhibits strong shell emission in the radio and X-ray bands, and has a purported detection in the TeV gamma-ray band by the CANGAROO-II telescope. The CANGAROO results were touted as evidence for the production of…

Astrophysics · Physics 2009-11-10 Matthew G. Baring , Donald C. Ellison , Patrick O. Slane

HESS J1641-463 is a unique source discovered by the High Energy Stereoscopic System (H.E.S.S.) telescope array in the multi-TeV domain. The source had been previously hidden in the extended tail of emission from the bright nearby source…

High Energy Astrophysical Phenomena · Physics 2019-08-14 I. Oya , S. Casanova , F. Aharonian , M. Dalton

A new TeV source, HESS J1641-463, has been serendipitously discovered in the Galactic plane by the High Energy Stereoscopic System (H.E.S.S.) at a significance level of 8.6 standard deviations. The observations of HESS J1641-463 were…

High Energy Astrophysical Phenomena · Physics 2013-03-07 I. Oya , M. Dalton , B. Behera , P. Bordas , A. Djannati-Ataï , J. Hahn , V. Marandon , U. Schwanke , G. Spengler , H. E. S. S. Collaboration

RX J1713.7-3946 is the brightest shell-type Supernova remnant (SNR) of the TeV gamma-ray sky. Earlier Fermi-LAT results on low-energy gamma-ray emission suggested that, despite large uncertainties in the background determination, the…

High Energy Astrophysical Phenomena · Physics 2015-04-29 S. Federici , M. Pohl , I. Telezhinsky , A. Wilhelm , V. V. Dwarkadas

Supernova remnants (SNRs) are the most attractive candidates for the acceleration sites of Galactic cosmic rays. We report the detection of GeV $\gamma$-ray emission with the Pass 8 events recorded by Fermi Large Area Telescope (Fermi-LAT)…

High Energy Astrophysical Phenomena · Physics 2016-01-29 Yu-Liang Xin , Yun-Feng Liang , Xiang Li , Qiang Yuan , Si-Ming Liu , Da-Ming Wei

We study the origin of gamma rays from the supernova remnant (SNR) RX J1713.7-3946. Using an analytical model, we calculate the distribution of cosmic rays (CRs) around the SNRs. Motivated by the results of previous studies, we assume that…

High Energy Astrophysical Phenomena · Physics 2022-08-02 Yutaka Fujita , Ryo Yamazaki , Yutaka Ohira

The supernova remnant (SNR) G150.3+4.5 was first identified in radio, exhibiting a hard GeV spectrum and a $\sim 1.5^\circ$ radius. Radio observations revealed a bright arc with an index of $\sim -0.40$, which stands in contrast to the…

High Energy Astrophysical Phenomena · Physics 2024-08-20 Yuan Li , Siming Liu , Gwenael Giacinti

Supernova remnant (SNR) RX J1713.7-3946 is well known for its bright TeV gamma-ray emission with shell-like morphology. To constrain the hydrodynamical evolution, we have performed six times observations of the northwestern (NW) shell with…

High Energy Astrophysical Phenomena · Physics 2016-11-15 Naomi Tsuji , Yasunobu Uchiyama