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The vast majority of Galactic supernova remnants (SNRs) were detected by their synchrotron radio emission. Recently, the evolved SNR G107.0+9.0 with a diameter of about 3~deg or 75~pc up to 100~pc in size was optically detected with an…

星系天体物理 · 物理学 2021-11-03 Wolfgang Reich , Xuyang Gao , Patricia Reich

In this paper, we present high-energy neutrino spectra from 21 Galactic supernova remnants (SNRs), derived from gamma-ray measurements in the GeV-TeV range. We find that only the strongest sources, i.e. G40.5-0.5 in the north and Vela…

星系天体物理 · 物理学 2015-06-12 Matthias Mandelartz , Julia Becker Tjus

Supernova remnants (SNRs) can exert strong influence on molecular clouds (MCs) through interaction by shock wave and cosmic rays. In this paper, we present our mapping observation of HCO+ and HCN 1-0 lines towards 13 SNRs interacting with…

星系天体物理 · 物理学 2024-11-15 Tian-Yu Tu , Yang Chen , Qian-Cheng Liu

There is a considerable deficiency in the number of known supernova remnants (SNRs) in the Galaxy compared to that expected. Searches for extended low-surface brightness radio sources may find new Galactic SNRs, but confusion with the much…

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…

星系天体物理 · 物理学 2015-03-24 Sibylle Anderl , Antoine Gusdorf , Rolf Güsten

A supernova (SN) explosion drives stellar debris into the circumstellar material (CSM) filling a region on a scale of parsecs with X-ray emitting plasma. The velocities involved in supernova remnants (SNRs), thousands of km/s, can be…

星系天体物理 · 物理学 2015-05-20 Daniel Dewey

We present a detailed spatially-resolved spectroscopic analysis of two X-ray observations (with a total integration time of 73280 seconds) made of the luminous northwestern rim complex of the Galactic supernova remnant (SNR) G266.2-1.2 (RX…

高能天体物理现象 · 物理学 2015-05-19 Thomas G. Pannuti , Glenn E. Allen , Miroslav D. Filipovic , Ain De Horta , Milorad Stupar , Rashika Agrawal

We present the results of near-infrared imaging and spectroscopic observations of the young, core-collapse supernova remnant (SNR) G11.2-0.3. In the [Fe II] 1.644 um image, we first discover long, clumpy [Fe II] filaments within the radio…

天体物理学 · 物理学 2008-11-26 Bon-Chul Koo , Dae-Sik Moon , Ho-Gyu Lee , Jae-Joon Lee , Keith Matthews

Aims. The properties of the Galactic supernova remnant (SNR) RX J0852.0-4622 are theoretically analysed. Methods. An explicitly time-dependent, nonlinear kinetic model of cosmic ray (CR) acceleration in SNRs is used to describe the…

高能天体物理现象 · 物理学 2015-05-13 E. G. Berezhko , G. Pühlhofer , H. J. Völk

Supernova Remnants (SNRs) are believed to be the main source of Galactic cosmic rays (CR). The strong SNR shocks provide ideal acceleration sites for particles of at least 10^14 eV/nucleon. Radio continuum studies of SNRs carried out with…

高能天体物理现象 · 物理学 2011-11-08 G. Dubner

Two possible planetary nebulae (PN G035.5-00.4 and IRAS 18551+0159), one newly re-identified supernova remnant (SNR G35.6-0.4), and one HII region (G35.6-0.5) form a line-of-sight-overlapped complex known as G35.6-0.5. We analyze 21 cm HI…

太阳与恒星天体物理 · 物理学 2015-06-16 H. Zhu , W. W. Tian , D. F. Torres , G. Pedaletti , H. Q. Su

In this paper we present the most up-to-date list of nearby galaxies with optically detected supernova remnants (SNRs). We discuss the contribution of the H{\alpha} flux from the SNRs to the total H{\alpha} flux and its influence on derived…

星系天体物理 · 物理学 2015-06-19 M. M. Vucetic , B. Arbutina , D. Urosevic

We present spectroscopy of 28 SNR candidates as well as one H II region in M81, and two SNR candidates in M82. Twenty six out of the M81 candidates turn out to be genuine SNRs, and two in M82 may be shocked condensations in the galactic…

New HI images from the VLA Galactic Plane Survey show prominent absorption features associated with the supernovae remnant G23.3-0.3 (SNR W41). We highlight the HI absorption spectra and the $^{13}$CO emission spectra of eight small regions…

天体物理学 · 物理学 2009-11-13 Denis A. Leahy , Wenwu Tian

We have observed 79 supernova remnants (SNRs) with the Urumqi 25m telescope at 6cm during the Sino-German 6cm polarization survey of the Galactic plane. We measured flux densities of SNRs at 6cm, some of which are the first ever measured or…

星系天体物理 · 物理学 2014-06-03 J. L. Han , X. Y. Gao , X. H. Sun , W. Reich , L. Xiao , P. Reich , J. W. Xu , W. B. Shi , E. Fuerst , R. Wielebinski

A survey of the inner 8$^\circ \times 1^\circ$ of the Galactic plane toward the Galactic center has been carried out at the 1720 MHz transition of OH molecule using the VLA in its D configuration with a resolution of…

天体物理学 · 物理学 2009-05-20 F. Yusef-Zadeh , W. M. Goss , D. A. Roberts , B. Robinson , D. A. Frail

Deep H$\alpha$ images of a faint emission complex 4.0 x 5.5 degrees in angular extent and located far off the Galactic plane at l = 70.0 degrees, b=-21.5 degrees reveal numerous thin filaments suggestive of a supernova remnant's shock…

高能天体物理现象 · 物理学 2015-10-14 Robert Fesen , Jack Neustadt , Christine Black , Ari Koeppel

Thermal X-ray spectra from supernova remnants (SNRs) are dominated by a number of line emission from various elements. Resolving the individual lines is critically important for a variety of scientific topics such as diagnosing…

高能天体物理现象 · 物理学 2023-03-30 Satoru Katsuda

The selection effects applicable to the identification of Galactic supernova remnants (SNRs) at radio wavelengths are discussed. Low surface brightness remnants are missing, as are those with small angular sizes (including young but distant…

天体物理学 · 物理学 2007-05-23 D. A. Green

We present molecular spectroscopy toward 50 Galactic supernova remnants (SNRs) taken at millimeter wavelengths in 12CO and 13CO J=2-1 with the Heinrich Hertz Submillimeter Telescope as part of a systematic survey for broad molecular line…

太阳与恒星天体物理 · 物理学 2016-01-20 Charles D. Kilpatrick , John H. Bieging , George H. Rieke