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Gamma-rays from hadronic collisions are expected from supernova remnants (SNRs) located near molecular clouds. The temperature on the shock interacting with the dense environment quickly reaches $10^5$ K. The radiative losses of plasma…

高能天体物理现象 · 物理学 2016-01-27 O. Petruk , T. Kuzyo , V. Beshley

The surface brightness diameter relationship for supernovae remnants (SNRs) is explained by adopting a model of direct conversion of the flux of kinetic energy into synchrotron luminosity. Two laws of motion are adopted, a power law model…

星系天体物理 · 物理学 2012-01-26 L. Zaninetti

We summarize the current observational evidence for associations between supernova remnants and neutron stars, including radio pulsars, proposed "inactive" young neutron stars, "anomalous" X-ray pulsars, and soft gamma-ray repeaters, and…

天体物理学 · 物理学 2007-05-23 V. M. Kaspi

We review the observations of supernova remnants (SNRs) and pulsar-wind nebulae (PWNe) that give information on the strength and orientation of magnetic fields. Radio polarimetry gives the degree of order of magnetic fields, and the…

星系天体物理 · 物理学 2015-05-27 S. P. Reynolds , B. M. Gaensler , F. Bocchino

We present ASCA observations of supernova remnant (SNR) G349.7+0.2. The remnant has an irregular shell morphology and is interacting with a molecular cloud, evident from the presence of OH(1720 MHz) masers and shocked molecular gas. The…

天体物理学 · 物理学 2009-11-07 P. Slane , Y. Chen , J. S. Lazendic , J. P. Hughes

We present a spatially resolved study of the kinematical properties of known supernova remnants (SNRs) in the nearest galaxies of the SIGNALS survey, namely NGC 6822 (one object) and M33 (163 objects), based on data obtained with the…

We compare a deep (37 ks) Chandra ACIS-S image of the M31 bulge to Local Group Survey narrow-band optical data and Very Large Array (VLA) radio data of the same region. Our precisely registered images reveal two new optical shells with…

天体物理学 · 物理学 2009-11-10 B. F. Williams , L. O. Sjouwerman , A. K. H. Kong , J. D. Gelfand , M. R. Garcia , S. S. Murray

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 (SNRs) in Local Group galaxies offer unique insights into the origin of different types of supernovae. In order to take full advantage of these insights, one must understand the intrinsic and environmental diversity of…

高能天体物理现象 · 物理学 2016-11-07 Sumit K. Sarbadhicary , Carles Badenes , Laura Chomiuk , Damiano Caprioli , Daniel Huizenga

We propose simple, explicit, analytical approximations for the kinematics of an adiabatic blast wave propagating in an exponentially stratified ambient medium, and for the onset of radiative cooling, which ends the adiabatic era. Our…

天体物理学 · 物理学 2009-10-31 Witold Maciejewski , Donald P. Cox

We performed millimeter observations in CO lines toward the supernova remnant (SNR) G127.1+0.5. We found a molecular filament at 4--13 km s$^{-1}$ consisting of two distinct parts: a straight part coming out of the remnant region and a…

高能天体物理现象 · 物理学 2015-06-22 Xin Zhou , Ji Yang , Min Fang , Yang Su

Recent progress in the three-dimensional modeling of supernovae (SN) has shown the importance of asymmetries for the explosion. This calls for a reconsideration of the modeling of the subsequent phase, the supernova remnant (SNR), which has…

高能天体物理现象 · 物理学 2019-06-12 Gilles Ferrand , Donald C. Warren , Masaomi Ono , Shigehiro Nagataki , Friedrich K. Roepke , Ivo R. Seitenzahl

As supernova remnants expand, their shock waves are freezing in and compressing the magnetic field lines they encounter; consequently we can use supernova remnants as magnifying glasses for their ambient magnetic fields. We will describe a…

天体物理学 · 物理学 2009-11-13 Roland Kothes Jo-Anne Brown

Recent gamma-ray observations show that middle aged supernova remnants (SNRs) interacting with molecular clouds (MCs) can be sources of both GeV and TeV emission. Based on the MC association, two scenarios have been proposed to explain the…

高能天体物理现象 · 物理学 2016-09-13 Xiaping Tang , Roger A. Chevalier

We present compelling evidence for confirmation of a Galactic supernova remnant (SNR) candidate, G332.5-5.6, based initially on identification of new, filamentary, optical emission line nebulosity seen in the arcsecond resolution images…

天体物理学 · 物理学 2009-11-13 M. Stupar , Q. A. Parker , M. D. Filipovic , D. J. Frew , I. Bojicic , B. Aschenbach

We present a re-discovery of G278.94+1.35 as possibly one of the largest known Galactic supernova remnants (SNR) - that we name Diprotodon. While previously established as a Galactic SNR, Diprotodon is visible in our new EMU and GLEAM radio…

The structure and morphology of supernova remnants (SNRs) reflect the properties of the parent supernovae (SNe) and the characteristics of the inhomogeneous environments through which the remnants expand. Linking the morphology of SNRs to…

高能天体物理现象 · 物理学 2020-12-29 S. Orlando , A. Wongwathanarat , H. -T. Janka , M. Miceli , M. Ono , S. Nagataki , F. Bocchino , G. Peres

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

We universally search for evidence of kinematic and spatial correlation of supernova remnant (SNR) and molecular cloud (MC) associations for nearly all SNRs in the coverage of the MWISP CO survey, i.e. 149 SNRs, 170 SNR candidates, and 18…

This work reports on the detection of $\gamma$-ray emission coincident with the supernova remnant (SNR) SNR G5.7-0.1 using data collected by the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. The SNR is believed to be…

高能天体物理现象 · 物理学 2016-01-13 Timothy Joubert , Daniel Castro , Patrick Slane , Joseph Gelfand