Results 31 to 40 of about 199,466 (288)
Historical Supernovae and Supernova Remnants [PDF]
International Astronomical Union Colloquium, 1996 The oldest historical supernova (SN), recorded by ancient Chinese in 14th Century B.C. on pieces of tortoise shells or bones, is identified with the aid of modern space γ-ray observations. Hard X-rays with energy up to 20 keV were observed from IC 443 by the X-ray satellite Ginga. We infer from these observations the age of IC 443 is ∼ 1000 — 1400 yrs.
openaire +3 more sources
Possible Evidence for the Stochastic Acceleration of Secondary Antiprotons by Supernova Remnants [PDF]
, 2017 The antiproton-to-proton ratio in the cosmic-ray spectrum is a sensitive probe of new physics. Using recent measurements of the cosmic-ray antiproton and proton fluxes in the energy range of 1-1000 GeV, we study the contribution to the $\bar{p}/p$ ratio ...
I. Cholis, D. Hooper, T. Linden
semanticscholar +1 more source
Numerical code for fitting radial emission profile of a shell supernova remnant: Application [PDF]
Serbian Astronomical Journal, 2011 We present IDL (Interactive Data Language) codes for fitting a theoretical emission profile of a shell supernova remnant (SNR) to the mean profile of an SNR obtained from radio observations. Two considered theoretical models are: 1) a shell with
Opsenica Slobodan, Arbutina Bojan
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Non-linear diffusion of cosmic rays escaping from supernova remnants – I. The effect of neutrals [PDF]
, 2016 Supernova remnants are believed to be the main sources of galactic cosmic rays (CR). Within this framework, particles are accelerated at supernova remnant shocks and then released in the interstellar medium.
L. Nava +4 more
semanticscholar +1 more source
Molecular Ecology, EarlyView., 2023 Abstract Natural variation can provide important insights into the genetic and environmental factors that shape social behaviour and its evolution. The sweat bee, Lasioglossum baleicum, is a socially flexible bee capable of producing both solitary and eusocial nests.
Kennedy S. Omufwoko +5 more
wiley +1 more source
International Astronomical Union Colloquium, 1989 Abstract.In this review I will concentrate on older remnants, by which I mean those in which radiative cooling is important somewhere and the swept up mass is sufficiently large for the details of the initial explosion not to matter. For such remnants it is the optical emission which is crucial since it allows us to deduce a great deal about the ...
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The Remnants of Intergalactic Supernovae [PDF]
The Astrophysical Journal, 2005 ApJ, in press, 8 ...
Maoz, Dan, Waxman, Eli, Loeb, Abraham
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Supernova Remnants in the Local Group I: A model for the radio luminosity function and visibility times of supernova remnants [PDF]
, 2016 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 SNRs in the ...
S. Sarbadhicary +4 more
semanticscholar +1 more source
Magnetic Field Amplification in Supernova Remnants [PDF]
, 2017 Based on the new findings on the turbulent dynamo in Xu & Lazarian, we examine the magnetic field amplification in the context of supernova remnants. Due to the strong ion-neutral collisional damping in the weakly ionized interstellar medium, the dynamo ...
Siyao Xu, A. Lazarian
semanticscholar +1 more source
Core collapse supernova remnants with ears [PDF]
, 2016 We study the morphologies of core collapse supernova remnants (CCSNRs) and find that about third of CCSNRs in our sample have two opposite `ears' protruding from their main shell.
Aldana Grichener, N. Soker
semanticscholar +1 more source