Results 11 to 20 of about 37,813 (241)

Radio-continuum observations of small, radially polarised Supernova Remnant J0519-6902 in the large Magellanic cloud [PDF]

open access: yesSerbian Astronomical Journal, 2012
We report on new Australian Telescope Compact Array (ATCA) observations of SNR J0519-6902. The Supernova Remnant (SNR) is small in size (~8 pc) and exhibits a typical SNR spectrum with α = -0.53±0.07, with steeper spectral indices towards the ...
Bozzetto L.M.   +3 more
doaj   +1 more source

Global Deceleration and Inward Movements of X-Ray Knots and Rims of RCW 103

open access: yesThe Astrophysical Journal, 2023
The kinematics of shocks, ejecta knots, and the compact remnant of a supernova remnant give insights into the nature of the progenitor and the surrounding environment.
Hiromasa Suzuki   +4 more
doaj   +1 more source

Multifrequency observations of one of the largest supernova remnants in the local group of galaxies, LMC - SNR J0450-709 [PDF]

open access: yesSerbian Astronomical Journal, 2009
We present the results of new Australia Telescope Compact Array (ATCA) observations of one of the largest supernova remnants, SNR J0450-709, in the Local Group of galaxies.
Čajko K.O.   +2 more
doaj   +3 more sources

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

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

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

Probing r-Process Production of Nuclei Beyond Bi209 with Gamma Rays [PDF]

open access: yes, 1999
We estimate gamma-ray fluxes due to the decay of nuclei beyond Bi209 from a supernova or a supernova remnant assuming that the r-process occurs in supernovae.
Qian, Y. -Z.   +2 more
core   +3 more sources

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

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