Results 11 to 20 of about 29,281 (217)

Near-infrared Spectroscopy of Dense Ejecta Knots in the Outer Eastern Area of the Cassiopeia A Supernova Remnant

open access: yesThe Astrophysical Journal, 2023
The Cassiopeia A supernova remnant has a complex structure, manifesting the multidimensional nature of core-collapse supernova explosions. To further understand this, we carried out near-infrared multiobject spectroscopy on the ejecta knots located in ...
Bon-Chul Koo   +3 more
doaj   +1 more source

GALACTIC AND EXTRAGALACTIC SUPERNOVA REMNANTS AS SITES OF PARTICLE ACCELERATION

open access: yesActa Polytechnica, 2013
Supernova remnants, owing to their strong shock waves, are likely sources of Galactic cosmic rays. Studies of supernova remnants in X-rays and gamma rays provide us with new insights into the acceleration of particles to high energies. This paper reviews
Manami Sasaki
doaj   +1 more source

Dynamics of a Supernova Envelope in a Cloudy Interstellar Medium [PDF]

open access: yes, 2015
The evolution of a supernova remnant in a cloudy medium as a function of the volume filling factor of the clouds is studied in a three-dimensional axially symmetrical model.
Korolev, V. V.   +3 more
core   +1 more source

Supernova remnants [PDF]

open access: yesInternational 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 ...
openaire   +1 more source

The Supernova – Supernova Remnant Connection [PDF]

open access: yes, 2016
Many aspects of the progenitor systems, environments, and explosion dynamics of the various subtypes of supernovae are difficult to investigate at extragalactic distances where they are observed as unresolved sources. Alternatively, young supernova remnants in our own galaxy and in the Large and Small Magellanic Clouds offer opportunities to resolve ...
Milisavljevic, Dan, Fesen, Robert A.
openaire   +2 more sources

Doppler Broadening and Line-of-sight Effects in Core-collapse Supernovae and Young Remnants

open access: yesThe Astrophysical Journal, 2023
The dynamics and spectral characteristics of supernova ejecta reveal details of the supernova energetics, explosive nucleosynthesis, and evolution of the progenitor.
Taylor Jacovich   +6 more
doaj   +1 more source

Plerionic supernova remnants [PDF]

open access: yesAIP Conference Proceedings, 2012
AIP Conference Proceedings of the 5th International Symposium on High-Energy Gamma-Ray Astronomy, Heidelberg, July 9-13 (2012). Eds: F. Aharonian, W. Hofmann, F. Rieger. Solicited review, 8 pages, 4 colour figures. The figures resolution has been reduced for astro-ph.
openaire   +2 more sources

First Observations of SN 1604 (Kepler’s Supernova)

open access: yesUniverse, 2021
A supernova close enough to the Earth is a spectacular event: it can appear as a “new star” as luminous as Venus, or even more, visible for several days.
Alessandro de Angelis, Selenia Broccio
doaj   +1 more source

RX-J0852−4622: THE NEAREST HISTORICAL SUPERNOVA REMNANT – AGAIN

open access: yesActa Polytechnica, 2013
RX-J0852−4622, a supernova remnant, is demonstrated to be closer than 500 pc, based on the measurements of the angular radius, the angular expansion rate and the TeV g-ray flux.
Bernd Aschenbach
doaj   +1 more source

Nonthermal Radiation from Supernova Remnant Shocks [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2013
Most of high energy cosmic rays (CRs) are thought to be produced by diffusive shock acceleration (DSA) at supernova remnants (SNRs) within the Galaxy.
Hyesung Kang
doaj   +1 more source

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