Results 1 to 10 of about 9,315 (218)

The supernova remnant SN 1006 as a Galactic particle accelerator [PDF]

open access: yesNature Communications, 2022
It is known that cosmic rays could be accelerated by shock waves in supernova (SN) remnants. Here, the authors show that SN 1006 remnant is an efficient source of cosmic rays, providing observational support for the quasi-parallel acceleration mechanism.
Roberta Giuffrida   +8 more
doaj   +2 more sources

Multifrequency radio observations of a SNR in the LMC: The case of SNR J0527-6549 (DEM l204) [PDF]

open access: yesSerbian Astronomical Journal, 2010
We present a detailed study and results of new Australia Telescope Compact Array (ATCA) observations of supernova remnant SNR J0527-6549. This Large Magellanic Cloud (LMC) object follows a typical supernova remnant (SNR) horseshoe morphology ...
Bozzetto L.M.   +7 more
doaj   +3 more sources

Particle propagation in clumpy supernova remnants [PDF]

open access: yesEPJ Web of Conferences, 2019
The presence of dense clumps in the environment where a supernova remnant expands might have a strong impact in shaping the observed hadronic gamma-ray spectrum.
Celli Silvia
doaj   +1 more source

How Tycho Brahe’s recordings in 1572 support SN 1572 as a type I(a) supernova

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The 450th anniversary of the discovery of the SN 1572 supernova event was celebrated in 2022. A closer look at the historical development of the field of supernova astronomy reveals the scientific importance of Tycho Brahe’s 1572 observations of this ...
Tobias C. Hinse   +5 more
doaj   +1 more source

A new numerical code for hydrodynamical 3D simulations of supernova remnants [PDF]

open access: yesSerbian Astronomical Journal, 2019
We develop a 3D hydrodynamical code written in C programming language to study the expansion of supernova remnants (SNRs) in the surrounding medium. It is based on the MUSCL-Hancock finite volume scheme with the HLLC Riemann solver.
Kostić P.
doaj   +1 more source

Electron–Ion Temperature Ratio in Astrophysical Shocks

open access: yesThe Astrophysical Journal, 2023
Collisionless shock waves in supernova remnants and the solar wind heat electrons less effectively than they heat ions, as is predicted by kinetic simulations.
John C. Raymond   +11 more
doaj   +1 more source

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

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

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

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

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