Results 11 to 20 of about 42,346 (167)
Multifrequency observations of one of the largest supernova remnants in the local group of galaxies, LMC - SNR J0450-709 [PDF]
Serbian 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
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Radio-continuum observations of small, radially polarised Supernova Remnant J0519-6902 in the large Magellanic cloud [PDF]
Serbian 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
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Failed supernova remnants [PDF]
Publications of the Astronomical Society of Japan, 2021 Abstract In a failed supernova, partial ejection of the progenitor’s outer envelope can occur due to weakening of the core’s gravity by neutrino emission in the protoneutron star phase. We consider emission when this ejecta sweeps up the circumstellar material, analogous to supernova remnants (SNRs). We focus on failed explosions of blue
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The 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
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Global Deceleration and Inward Movements of X-Ray Knots and Rims of RCW 103
The 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
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First Observations of SN 1604 (Kepler’s Supernova)
Universe, 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
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GALACTIC AND EXTRAGALACTIC SUPERNOVA REMNANTS AS SITES OF PARTICLE ACCELERATION
Acta 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
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Doppler Broadening and Line-of-sight Effects in Core-collapse Supernovae and Young Remnants
The 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
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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.
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Nonthermal Radiation from Supernova Remnant Shocks [PDF]
Journal 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
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