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The breakthrough developments of Cherenkov telescopes in the last decade have led to angular resolution of 0.1{\deg} and an unprecedented sensitivity. This has allowed the current generation of Cherenkov telescopes to discover a population…

High Energy Astrophysical Phenomena · Physics 2015-08-05 F. Acero , M. Lemoine-Goumard , M. Renaud , J. Ballet , J. W. Hewitt , R. Rousseau , T. Tanaka

The evolution of the radio emission of shell-type Supernova remnants (SNRs) is modeled within the framework of the simple and commonly used assumptions that the mechanism of diffusive shock acceleration (DSA) is responsible for generating…

Astrophysics · Physics 2009-11-11 Abdul Asvarov

This paper reports results of a Suzaku observation of the supernova remnant (SNR) Kes 79 (G33.6+0.1). The X-ray spectrum is best fitted by a two-temperature model: a non-equilibrium ionization (NEI) plasma and a collisional ionization…

High Energy Astrophysical Phenomena · Physics 2016-01-20 Tamotsu Sato , Katsuji Koyama , Shiu-Hang Lee , Tadayuki Takahashi

We present the first dedicated X-ray study of the supernova remnant (SNR) G32.8-0.1 (Kes 78) with Suzaku. X-ray emission from the whole SNR shell has been detected for the first time. The X-ray morphology is well correlated with the…

High Energy Astrophysical Phenomena · Physics 2016-02-17 Aya Bamba , Yukikatsu Terada , John Hewitt , Robert Petre , Lorella Angelini , Samar Safi-Harb , Ping Zhou , Fabrizio Bocchino , Makoto Sawada

We present the results of deep ASCA observations of two shell-like radio supernova remnants (SNRs) located in the direction to the Galactic center (GC) region. Unlike the radio morphology, G359.1-0.5 shows center-filled X-rays with…

Astrophysics · Physics 2015-06-24 Aya Bamba , Jun Yokogawa , Masaaki Sakano , Katsuji Koyama

Context: Supernovae (SNe) inject large amounts of energy and chemically enriched materials into their surrounding interstellar medium and, in some instances, into molecular clouds (MCs). The interaction of a supernova remnant (SNR) with a…

Astrophysics of Galaxies · Physics 2022-12-21 Parichay Mazumdar , Le Ngoc Tram , Friedrich Wyrowski , Karl M. Menten , Xindi Tang

We present evidence for shock acceleration of cosmic rays to high energies (about 10 TeV) in the supernova remnant IC 443. X-ray imaging spectroscopy with ASCA reveals two regions of particularly hard emission: an unresolved source embedded…

Astrophysics · Physics 2009-10-30 Jonathan W. Keohane , R. Petre , E. V. Gotthelf , M. Ozaki , K. Koyama

We investigate the interstellar medium (ISM) towards seven TeV gamma-ray sources thought to be pulsar wind nebulae (PWNe) using Mopra molecular line observations at 7mm [CS(1-0), SiO(1-0,v=0)], Nanten CO(1-0) data and the SGPS/GASS HI…

High Energy Astrophysical Phenomena · Physics 2020-08-10 F. J. Voisin , G. P. Rowell , M. G. Burton , Y. Fukui , H. Sano , F. Aharonian , N. Maxted , C. Braiding , R. Blackwell , J. Lau

Aims: We provide new insights into the gamma-ray emission from HESS J1912+101, a TeV supernova remnant candidate probably associated with the radio pulsar PSR J1913+1011. Methods: We obtained new observations at 1.5 GHz using the VLA in the…

High Energy Astrophysical Phenomena · Physics 2023-04-26 Laura Duvidovich , Alberto Petriella

Supernova remnants (SNRs) are considered as being the sources of galactic cosmic rays. In order to understand the origin, acceleration, and composition of these cosmic rays, detailed knowledge of the physical conditions in the local…

Astrophysics of Galaxies · Physics 2015-03-24 Sibylle Anderl , Antoine Gusdorf , Rolf Güsten

Supernova remnants (SNRs) contribute to regulate the star formation efficiency and evolution of galaxies. As they expand into the interstellar medium (ISM), they transfer vast amounts of energy and momentum that displace, compress and heat…

Recent X-ray observations of the supernova remnant IC443 interacting with molecular clouds have shown the presence of a new population of hard X-ray sources related to the remnant itself, which has been interpreted in terms of fast ejecta…

High Energy Astrophysical Phenomena · Physics 2012-06-05 F. Bocchino , A. M. Bykov , Y. Chen , A. M. Krassilchtchikov , K. P. Levenfish , M. Miceli , G. G. Pavlov , Yu. A. Uvarov , X. Zhou

The middle-aged supernova remnant (SNR) W51C is an interesting source for the interaction of the shell with a molecular cloud. The shell emits intense radio synchrotron photons, and high-energy gamma-rays from the remnant have been detected…

High Energy Astrophysical Phenomena · Physics 2015-05-18 Jun Fang , Li Zhang

Using a combination of ground-based and HST imaging, we have constructed a catalog of 179 supernova remnants (SNRs) and SNR candidates in the nearby spiral galaxy M51. Follow-up spectroscopy of 66 of the candidates confirms 61 of these as…

Astrophysics of Galaxies · Physics 2021-02-24 P. Frank Winkler , Sadie C. Coffin , William P. Blair , Knox S. Long , Kip D. Kuntz

The outer shells of young supernova remnants (SNRs) are the most plausible acceleration sites of high-energy electrons with the diffusive shock acceleration (DSA) mechanism. We studied spatial and spectral properties close to the shock…

Astrophysics · Physics 2009-11-10 Aya Bamba , Ryo Yamazaki , Tatsuo Yoshida , Toshio Terasawa , Katsuji Koyama

We report the detection of molecular clouds around the X-ray bright interior feature in the Galactic supernova remnant (SNR) CTB 109 (G109.1-1.0). This feature, called the Lobe, has been previously suggested to be the result of an…

The supernova remnant (SNR) RCW86 is among the few SNRs with Balmer-emission lines containing broad and narrow spectral components that trace fast, non-radiative shocks in partially-ionized gas.\ These are invaluable laboratories for…

We investigated in detail the morphology at low radio frequencies of the supernova remnant IC443 and accurately established its radio continuum spectral properties. We used the VLA in multiple configurations to produce high resolution radio…

Astrophysics of Galaxies · Physics 2015-05-27 G. Castelletti , G. Dubner , T. Clarke , N. E. Kassim

With the entire Small Magellanic Cloud (SMC) mapped by the Spitzer Space Telescope and Herschel Space Observatory, we were able to search 8-250 micron images in order to identify infrared (IR) emission associated with SMC supernova remnants…

High Energy Astrophysical Phenomena · Physics 2022-05-04 Mikako Matsuura , Victoria Ayley , Hannah Chawner , M. D. Filipovic , Warren Reid , F. D. Priestley , Andy Rigby , M. J. Barlow , Haley E. Gomez

In recent works, through observations of molecular lines, we found that the supernova remnant (SNR) G18.8+0.3 is interacting with a molecular cloud towards its southern edge. Also it has been proven the presence of several neighboring HII…

Solar and Stellar Astrophysics · Physics 2016-06-02 M. Celis Peña , Sergio Paron