中文
相关论文

相关论文: Detection of a new, low-brightness supernova remna…

200 篇论文

Supernova remnants expanding into adjacent molecular clouds are believed to be sites of cosmic ray acceleration and sources of energetic gamma-rays. Under certain environmental conditions, such interactions also give rise to unusual OH…

天体物理学 · 物理学 2009-11-06 Z. Arzoumanian , F. Yusef-Zadeh , T. J. W. Lazio

Context. While searching the NRAO VLA Sky Survey (NVSS) for diffuse radio emission, we have serendipitously discovered extended radio emission close to the Galactic plane. The radio morphology suggests the presence of a previously unknown…

高能天体物理现象 · 物理学 2014-09-05 F. de Gasperin , C. Evoli , M. Bruggen , A. Hektor , M. Cardillo , P. Thorman , W. A. Dawson , C. B. Morrison

We propose that some of the unidentified Galactic plane (-10 degrees < b < 10 degrees) sources listed in the first EGRET catalog (Fichtel et al. 1994) are associated with nearby supernova remnants. The probability that the association of…

天体物理学 · 物理学 2007-05-23 S. J. Sturner , C. D. Dermer

Sgr A East appears to be a single, mixed morphology 10,000 year-old supernova remnant (SNR) at the Galactic Center. It also appears to belong to a class of remnants that have been observed and detected at 1720 MHz, the transition frequency…

天体物理学 · 物理学 2009-11-07 Marco Fatuzzo , Fulvio Melia

We examine the hypothesis that some supernova remnants (SNRs) may be responsible for some unidentified gamma-ray sources detected by EGRET instrument aboard the Compton Gamma Ray Observatory. If this is the case, gamma-rays are produced via…

天体物理学 · 物理学 2007-05-23 B. Hnatyk , O. Petruk

Observations of the middle-aged supernova remnants IC 443, W28 and W51C indicate that the brightnesses at GeV and TeV energies are correlated with each other and with regions of molecular clump interaction, but not with the radio…

高能天体物理现象 · 物理学 2015-06-19 Xiaping Tang , Roger A. Chevalier

Supernova remnants are widely believed to be a principal source of galactic cosmic rays, produced by diffusive shock acceleration in the environs of the remnant's expanding shock. This review discusses recent modelling of how such energetic…

天体物理学 · 物理学 2007-05-23 Matthew G. Baring

We identify the radio-emitting shell-type supernova remnant G15.9+0.2 as a relatively young remnant containing an X-ray point source that may be its associated neutron star. The integrated spectrum of the remnant shell obtained from our 30…

天体物理学 · 物理学 2009-11-11 S. P. Reynolds , K. J. Borkowski , U. Hwang , I. Harrus , R. Petre , G. Dubner

If cosmic rays with energies <100 TeV originate in the galaxy and are accelerated in shock waves in shell-type supernova remnants (SNRs), gamma-rays will be produced as the result of proton and electron interactions with the local…

A review of the possible relationship between gamma-ray sources and supernova remnants (SNRs) is presented. Particular emphasis is given to the analysis of the observational status of the problem of cosmic ray acceleration at SNR shock…

天体物理学 · 物理学 2011-05-05 Diego F. Torres , Gustavo E. Romero , Thomas M. Dame , Jorge A. Combi , Yousaf M. Butt

We perform X-ray studies of the shell-type supernova remnant (SNR) gamma-Cygni associated with the brightest EGRET unidentified source 3EG J2020+4017. In addition to the thermal emissions with characteristic temperature of kT = 0.5-0.9 keV,…

天体物理学 · 物理学 2009-11-07 Yasunobu Uchiyama , Tadayuki Takahashi , Felix Aharonian , John Mattox

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…

高能天体物理现象 · 物理学 2015-05-18 Jun Fang , Li Zhang

We discovered independently the shell-type supernova remnant G12.82-0.02, recently reported by Brogan et al. (2005), which is coincident with the unidentified TeV gamma-ray source revealed in the HESS survey of the Galactic plane.…

天体物理学 · 物理学 2007-05-23 David J. Helfand , Robert H. Becker , Richard L. White

The shell-type supernova remnant (SNR) RCW 86, possibly associated with the historical supernova SN 185, with its relatively large size (about 40' in diameter) and the presence of non-thermal X-rays is a promising target for gamma-ray…

天体物理学 · 物理学 2015-05-13 HESS Collaboration , F. Aharonian

In the survey of the Galactic plane conducted with H.E.S.S., many VHE gamma-ray sources were discovered for which no clear counterpart at other wavelengths could be identified. HESS J1731-347 initially belonged to this source class.…

高能天体物理现象 · 物理学 2019-08-14 F. Acero , G. Pühlhofer , D. Klochkov , Nu. Komin , Y. Gallant , D. Horns , A. Santangelo

We briefly summarize the survey of HI 21 cm emission lines to search for shocked atomic gas associated with Galactic supernova remnants (SNRs) in the southern sky. For G347.3-0.5, we discuss the distance to the SNR and the implications of…

天体物理学 · 物理学 2007-05-23 Bon-Chul Koo , Ji-hyun Kang , Naomi McClure-Griffiths

We present the discovery of non-thermal radio and X-ray emission positionally coincident with the TeV $\gamma$-ray source HESS J1813--178. We demonstrate that the non-thermal radio emission is due to a young shell-type supernova remnant…

In a search for low surface brightness radio nebulae using the ASKAP-EMU survey, we discovered a faint radio shell, G289.6+5.8, and its central point radio source at the position of the soft gamma-ray source IGR J11187-5438. The central…

We present the analysis of 9.7 years Fermi-LAT data of the middle-aged supernova remnant W44 and the massive molecular gas complex that surrounds it. We derived a high-quality spectral energy distribution of gamma-radiation of the shell…

高能天体物理现象 · 物理学 2020-07-10 Giada Peron , Felix Aharonian , Sabrina Casanova , Roberta Zanin , Carlo Romoli

It is shown that the radio and gamma-ray emission observed from newly-found "GeV-bright" supernova remnants (SNRs) can be explained by a model, in which a shocked cloud and shock-accelerated cosmic rays (CRs) frozen in it are simultaneously…

高能天体物理现象 · 物理学 2015-05-19 Yasunobu Uchiyama , Roger Blandford , Stefan Funk , Hiroyasu Tajima , Takaaki Tanaka
‹ 上一页 1 2 3 10 下一页 ›