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The X-ray emission from a supernova remnant (SNR) is a powerful diagnostic of the state of the shocked plasma. The temperature (kT) and the emission measure (EM) of the shocked-gas are related to the energy of the explosion, the age of the…

高能天体物理现象 · 物理学 2020-05-21 D. A. Leahy , S. Ranasinghe. M. Gelowitz

Supernova remnants (SNRs) arise from the interaction between the ejecta of a supernova (SN) explosion and the surrounding circumstellar and interstellar medium. Some SNRs, mostly nearby SNRs, can be studied in great detail. However, to…

高能天体物理现象 · 物理学 2018-04-25 Knox S. Long

Recent studies using 21 cm HI line and $^{13}$CO line observations in the inner part of the Galaxy have resulted in new distances for 30 Galactic supernova remnants (SNRs). 15 of those remnants have observed X-ray spectra, for which…

星系天体物理 · 物理学 2018-10-17 D. A. Leahy , S. Ranasinghe

We present an revised table of 390 Galactic radio supernova remnants (SNRs) and their basic parameters. Statistical analyses are performed on SNR diameters, ages, spectral indices, Galactic heights and spherical symmetries. Furthermore, the…

星系天体物理 · 物理学 2023-04-12 S. Ranasinghe , D. Leahy

Supernova remnants (SNRs) have been considered as the dominant contributors to Galactic cosmic rays. However, the relation between high-energy particles trapped in SNRs and cosmic rays observed at the Earth remains obscure. In this paper,…

高能天体物理现象 · 物理学 2019-03-27 Houdun Zeng , Yuliang Xin , Siming Liu

Supernova remnants (SNRs) are the outcome of supernovae (SNe, either core-collapse or thermonuclear). The remnant results from the interaction between the stellar ejecta and the ambient medium around the progenitor star. Young SNRs are…

高能天体物理现象 · 物理学 2020-02-18 Gilles Ferrand

Although only a small fraction of stars end their lives as supernovae, all supernovae leave behind a supernova remnant (SNR), an expanding shock wave that interacts with the surrounding medium, heating the gas and seeding the cosmos with…

高能天体物理现象 · 物理学 2023-04-05 Aya Bamba , Brian J. Williams

Supernovae release an enormous amount of energy into the interstellar medium. Their remnants can observationally be traced up to several ten-thousand years. So far more than 230 Galactic supernova remnants (SNRs) have been identified in the…

天体物理学 · 物理学 2007-05-23 W. Reich

Context. A significant fraction (~30%) of massive stars in our Galaxy are moving supersonically through the interstellar medium, which strongly governs their location at the time they end their lives, e.g. die as a supernova and give birth…

高能天体物理现象 · 物理学 2025-09-10 Rowan Batzofin , Kathrin Egberts , Dominique M. -A. Meyer , Constantin Steppa

The study of core-collapse supernova remnants (SNRs) presents a fascinating puzzle, with intricate morphologies and a non-uniform distribution of stellar debris. Particularly, young remnants (aged less than 5000 years) hold immense value as…

高能天体物理现象 · 物理学 2023-11-10 Salvatore Orlando

Multi-wavelength observations of mature supernova remnants (SNRs), especially with recent advances in gamma-ray astronomy, make it possible to constrain energy distribution of energetic particles within these remnants. In consideration of…

高能天体物理现象 · 物理学 2017-01-18 Houdun Zeng , Yuliang Xin , Siming Liu , J. R. Jokipii , Li Zhang , Shuinai Zhang

Our statistics on Galactic supernova remnants (SNRs) shows that the electrons temperature ($T$) of hard X-ray and the shock waves traveling velocity ($\upsilon$) decreases with ages ($t$) for all-sort remnants. However, the shock waves…

高能天体物理现象 · 物理学 2009-10-18 Jian-Wen Xu , Ya-Peng Hu

Shocks of supernova remnants (SNRs) are important (and perhaps the dominant) agents for production of the Galactic cosmic rays. Recent $\gamma$-ray observations of several SNRs have made this case more compelling. However, these broadband…

高能天体物理现象 · 物理学 2012-12-12 Qiang Yuan , Siming Liu , Xiao-Jun Bi

The physical sizes of supernova remnants (SNRs) in a number of nearby galaxies follow an approximately linear cumulative distribution, contrary to what is expected for decelerating shock fronts. This has been attributed to selection…

星系天体物理 · 物理学 2015-05-18 Carles Badenes , Dan Maoz , Bruce Draine

Supernova remnants (SNRs) are important objects in terms of their connections with supernova (SN) explosion mechanism(s), progenitor stars, and cosmic-ray acceleration. Non-thermal emission from SNRs is an effective probe of the structure…

高能天体物理现象 · 物理学 2021-10-04 Haruo Yasuda , Shiu-Hang Lee , Keiichi Maeda

Supernova remnants (SNRs) are believed to be the major contributors to Galactic cosmic rays. The detection of non-thermal emission from SNRs demonstrates the presence of energetic particles, but direct signatures of protons and other ions…

高能天体物理现象 · 物理学 2015-06-11 Gilles Ferrand , Anne Decourchelle , Samar Safi-Harb

The investigation of extragalactic Supernova Remnants (SNRs) gives us the advantage of surmounting the challenges we are usually confronted with when observing Galactic SNRs, most notably Galactic extinction and distance uncertainties. At…

高能天体物理现象 · 物理学 2017-01-30 I. Leonidaki

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

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

We probe the environmental properties of X-ray supernova remnants (SNRs) at various points along their evolutionary journey, especially the S-T phase, and their conformance with theoretically derived models of SNR evolution. The remnant…

高能天体物理现象 · 物理学 2022-06-22 Chris Albert , Vikram V Dwarkadas
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