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A supernova remnant (SNR) candidate SRGe~J0023+3625 = G116.6-26.1 was recently discovered in the \textit{SRG}/eROSITA all-sky X-ray survey. This large ($\sim 4$ deg in diameter) SNR candidate lacks prominent counterparts in other bands.…

高能天体物理现象 · 物理学 2022-04-20 E. M. Churazov , I. I. Khabibullin , A. M. Bykov , N. N. Chugai , R. A. Sunyaev , I. I. Zinchenko

We report the first detection of optical emission from the shell-type Galactic supernova remnant (SNR) G108.2$-$0.6. We obtained H$\alpha$ images and long-slit spectra using the 1.5-m RTT150 telescope to examine the morphological and…

高能物理 - 唯象学 · 物理学 2023-12-21 Gunay Payli , Hicran Bakis , Ebru Aktekin , Hidetoshi Sano , Aytap Sezer

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…

天体物理学 · 物理学 2015-06-24 Aya Bamba , Jun Yokogawa , Masaaki Sakano , Katsuji Koyama

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

Accurate distances to supernova remnants (SNRs) are crucial in determining their size, age, luminosity and evolutionary state. To determine distances, we chose three SNRs from the VLA Galactic Plane Survey (VGPS) for extraction of HI…

星系天体物理 · 物理学 2018-05-28 S. Ranasinghe , D. A. Leahy

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…

The study of supernova remnants (SNRs) is fundamental to understanding the chemical enrichment and magnetism in galaxies, including our own Milky Way. In an effort to understand the connection between the morphology of SNRs and the Galactic…

星系天体物理 · 物理学 2016-03-09 J. L. West , S. Safi-Harb , T. Jaffe , R. Kothes , T. L. Landecker , T. Foster

Here is considered the full evolution of a spherical supernova remnant. We start by calculating the early time ejecta dominated stage and continue through the different phases of interaction with the circumstellar medium, and end with the…

星系天体物理 · 物理学 2016-07-19 Denis Leahy

Spatial template is important to study the nearby supernova remnant (SNR). For SNR G332.5-5.6, we report a gaussian disk with radius of about 1.06 degrees to be a potential good spatial model in the gamma-ray band. Employing this new…

高能天体物理现象 · 物理学 2024-03-12 Ming-Hong Luo , Qing-Wen Tang , Xiu-Rong Mo

We present the first optical study of the supernova remnant (SNR) G7.7-3.7, with the aim of determining its evolutionary phase since it has been suggested to be the remnant of SN 386 AD. We obtained narrow-band images in the filters…

The theoretical fundamentals of formation of the supernova remnant (SNR) continuum radio spectra are presented in this review. Mainly based on the Fermi 1 theory - also known as diffuse shock acceleration (DSA) - the different shapes…

高能天体物理现象 · 物理学 2015-06-22 Dejan Urošević

We have detected a spatially resolved supernova remnant (SNR) in the center of the Andromeda Galaxy, in radio, X-ray, and optical wavelengths. These observations provide the highest spatial resolution imaging of a radio/X-ray/optical SNR in…

天体物理学 · 物理学 2009-11-07 A. K. H. Kong , L. O. Sjouwerman , B. F. Williams , M. R. Garcia , J. R. Dickel

Numerous astrophysical shock waves evolve in an environment where the radiative cooling behind the shock affects the hydrodynamical structure downstream, thereby influencing the potential for particle acceleration via diffusive shock…

高能天体物理现象 · 物理学 2026-01-14 Pierre Cristofari

We report here on the first pointed X-ray observation of the supernova remnant (SNR) G330.2+1.0. The X-ray morphology is characterized by an extended shell. Its X-ray spectrum is well represented by a single power-law function with a photon…

天体物理学 · 物理学 2015-06-24 K. Torii , H. Uchida , K. Hasuike , H. Tsunemi , Y. Yamaguchi , S. Shibata

There is mounting observational evidence that most galactic nuclei host both supermassive black holes (SMBHs) and young populations of stars. With an abundance of massive stars, core-collapse supernovae are expected in SMBH spheres of…

高能天体物理现象 · 物理学 2015-01-14 Alex Rimoldi , Elena M. Rossi , Tsvi Piran , Simon Portegies Zwart

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

Recent hydrodynamical models of supernova remnants (SNRs) demonstrate that their evolution depends heavily on the inhomogeneities of the surrounding medium. As SNRs expand, their morphologies are influenced by the non-uniform and turbulent…

高能天体物理现象 · 物理学 2019-11-06 Jennifer N. Stafford , Laura A. Lopez , Katie Auchettl , Tyler Holland-Ashford

Supernovae (SN) and supernova remnants (SNR) have key roles in galaxies, but their physical descriptions is still incomplete. Thus, it is of interest to study neutrino radiation to understand SN and SNR better. We will discuss: (1) The ~10…

天体物理学 · 物理学 2011-02-19 Francesco Vissani , Maria Laura Costantini

We present a BIMA image of the supernova remnant G21.5-0.9 at 94 GHz with angular resolution 8.6" x 4.5". On scales larger than our synthesized beam, our results do not indicate any radial or local variations in the acceleration or…

天体物理学 · 物理学 2009-11-07 Douglas C. -J. Bock , Melvyn C. H. Wright , John R. Dickel

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