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相关论文: Did Egret Detect Distant Supernova Remnants?

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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

Accurate distance measurements to supernova remnants (SNRs) are crucial for understanding their physical properties and evolution. We present a novel method that combines CO line observations with three-dimensional (3D) extinction maps to…

星系天体物理 · 物理学 2026-03-24 Zhe Zhang , Jun Li , Biwei Jiang , He Zhao , Fupeng Liu

Detailed radio observations of extragalactic supernovae are critical to obtaining valuable information about the nature and evolutionary phase of the progenitor star in the period of a few hundred to several tens-of-thousands of years…

天体物理学 · 物理学 2007-05-23 S. D. Van Dyk , K. W. Weiler , M. J. Montes , R. A. Sramek , N. Panagia

We discovered a middle-aged supernova remnant (SNR) in the vicinity of G69.7+1.0 using the ASCA satellite. G69.7+1.0 was identified in the 2.7 GHz survey and classified as a shell-type SNR with a diameter of 16 arcmin. During the ROSAT…

天体物理学 · 物理学 2015-06-24 Kumi Yoshita , Emi Miyata , Hiroshi Tsunemi

A catalogue of 231 Galactic supernova remnants (SNRs) is presented, and the selection effects applicable to the identification of remnants at radio wavelengths are discussed. In addition to missing low surface brightness remnants, small…

天体物理学 · 物理学 2007-05-23 D. A. Green

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

We take advantage of the red clump stars to build the relation of the optical extinction (AV) and distance in each direction of supernova remnants (SNRs) with known extinction in the fourth Galactic quadrant. The distances of 9 SNRs are…

星系天体物理 · 物理学 2019-07-24 Su-Su Shan , Hui Zhu , Wen-Wu Tian , Hai-Yan Zhang , Ai-Yuan Yang , Meng-Fei Zhang

We have observed the Galactic supernova remnant G16.7+0.1 for 13 ks using the EPIC cameras aboard the XMM-Newton X-ray Observatory, producing the first detection of the SNR outside of the radio band. G16.7+0.1 is one of the faintest radio…

天体物理学 · 物理学 2007-05-23 Marcel A. Agueros , David J. Helfand , Eric V. Gotthelf

Supernova remnants (SNRs) are observable for about 6-15x10^4 years before they fade into the Galactic interstellar medium. With a Galactic supernova rate of approximately two per century, we can expect to have of the order of 1200 SNRs in…

高能天体物理现象 · 物理学 2021-04-07 W. Becker , N. Hurley-Walker , Ch. Weinberger , L. Nicastro , M. G. F. Mayer , A. Merloni , J. Sanders

We discuss the possibility of using Supernovae as tracers of the star formation history of the Universe for the range of stellar masses $\sim 3-30$ M$_\odot$ and possibly beyond. We simulate the observations of 350 SNe, up to $z\sim 15$,…

天体物理学 · 物理学 2015-06-24 M. Della Valle , R. Gilmozzi , N. Panagia , J. Bergeron , P. Madau , J. Spyromilio , P. Dierickx

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 briefly reviewed some recent progress on the studies of supernova remnants (SNRs), including the radio SNRs (the structure, polarization, spectrum etc.), observational characteristics of X-ray emission, pulsar wind nebulae (PWNe),…

高能天体物理现象 · 物理学 2009-09-03 Jian-Wen Xu

We have observed two fields - Field-I (l=3.2 degrees, b=-1.0 degree) and Field-II (l=356.8 degrees, b=-0.1 degree) with the Giant Metrewave Radio Telescope (GMRT) at 330 MHz. In the first field, we have studied the candidate supernova…

天体物理学 · 物理学 2009-11-07 Subhashis Roy , A. Pramesh Rao

We present the results of 12CO J = 1-0 line observations of eleven Galactic supernova remnants (SNRs) obtained using the Seoul Radio Astronomy Observatory (SRAO) 6-m radio telescope. The observation was made as a part of the SRAO CO survey…

星系天体物理 · 物理学 2015-06-05 Il-Gyo Jeong , Do-Young Byun , Bon-Chul Koo , Jea-Joon Lee , Jung-Won Lee , Hyunwoo Kang

We report the discovery of up to 35 new supernova remnants (SNRs) from a 42 arcsec resolution 90cm multi-configuration Very Large Array survey of the Galactic plane covering 4.5 deg< l <22.0 deg and |b| < 1.25 deg. Archival 20cm, 11cm, and…

天体物理学 · 物理学 2009-11-11 C. L. Brogan , J. D. Gelfand , B. M. Gaensler , N. E. Kassim , T. J. Lazio

The explosion of a supernova releases almost instantaneously about 10^51 ergs of mechanic energy, changing irreversibly the physical and chemical properties of large regions in the galaxies. The stellar ejecta, the nebula resulting from the…

高能天体物理现象 · 物理学 2015-09-29 Gloria Dubner , Elsa Giacani

We have carried out high-resolution near-infrared spectroscopic observations toward 16 Galactic supernova remnants (SNRs) showing strong H$_{2}$ emission features. A dozen bright H$_{2}$ emission lines are clearly detected for individual…

星系天体物理 · 物理学 2020-11-25 Yong-Hyun Lee , Bon-Chul Koo , Jae-Joon Lee

Supernova remnants (SNRs) in the Galaxy are an important source of energy injection into the interstellar medium, and also of cosmic rays. Currently there are 294 known SNRs in the Galaxy, and their distribution with Galactocentric radius…

高能天体物理现象 · 物理学 2015-10-14 D. A. Green

The idea that the shocks from supernova remnants (SNR) expanding into the interstellar medium (ISM) accelerate CR is still popular one but a number of authors have drawn attention to the fact that the experimental evidence for the presence…

天体物理学 · 物理学 2008-11-26 A. D. Erlykin , A. W. Wolfendale

We analyze the results of recent measurements of Galactic cosmic ray (GCRs) energy spectra and the spectra of nonthermal emission from supernova remnants (SNRs) in order to determine their consistency with GCR origin in SNRs. It is shown…

高能天体物理现象 · 物理学 2014-12-30 E. G. Berezhko