Results 21 to 30 of about 30,635 (100)

Three Supernova Remnants observed by BeppoSAX [PDF]

, 1998
We present the results of three observations of shell-type supernova remnants observed by BeppoSAX. Two of the remnants (N132D and Cas A) are oxygen rich supernova remnants. They were observed during the PV phase. SN1006 was observed during A01.
Allen, Ashworth, Asvarov, Boella, Dupraz, Favata, Favata, Fesen, Hamilton, Hwang, Iyudin, Jacco Vink, Kaastra, Koyama, Morse, Nomoto, Russell, The, Vink, Willingale   +19 more
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Supernova Remnants [PDF]

Highlights of Astronomy, 1974
AbstractThe present structure and recent changes in Cas A are discussed. On the deepest available exposures the optical remnant of this supernova is seen to consist of an almost complete shell. The southern part of this shell is outlined by knots that have developed during the last decade.
openaire   +2 more sources

Neutrinos from Supernovas and Supernova Remnants [PDF]

AIP Conference Proceedings, 2005
Supernovae (SN) and supernova remnants (SNR) have key roles in galaxies, but their physical descriptions is still incomplete. Thus, it is of interest to study neutrino radiation to understand SN and SNR better. We will discuss: (1) The ~10 MeV thermal neutrinos that arise from core collapse SN, that were observed for SN1987A, and can be seen with ...
M.L. Costantini, Francesco Vissani
openaire   +3 more sources

Progenitors of Recombining Supernova Remnants

, 2012
Usual supernova remnants have either ionizing plasma or plasma in collisional ionization equilibrium, i.e., the ionization temperature is lower than or equal to the electron temperature.
Blinnikov, Chevalier, Dwarkadas, Dwarkadas, Fryer, Hachisu, Hachisu, Itoh, Kawasaki, Moriya, Neill, Ohnishi, Ozawa, Pakmor, Prieto, Sawada, Schlegel, Shimizu, Smith, Smith, Uno, Wellons, Yamaguchi   +22 more
core   +1 more source

Dark supernova remnant [PDF]

Publications of the Astronomical Society of Japan, 2020
Abstract An almost perfect round hole of CO-line emission with a diameter of 3.7 pc was found in a molecular cloud (MC) centered on G35.75−0.25 (l = 35${{^{\circ}_{.}}}$75, b = −0${{^{\circ}_{.}}}$25) at radial velocity of 28 km s−1.
openaire   +4 more sources

Shocks and Particle Acceleration in Supernova Remnants: Observational Features

, 2003
The last ten years a number of observational advances have substantially increased our knowledge of shock phenomena in supernova remnants. This progress has mainly been made possible by the recent improvements in X-ray and Gamma-ray instrumentation.
Aharonian, Allen, Allen, Atoyan, Bamba, Bell, Bell, Bell, Berezhko, Biermann, Blandford, Bleeker, Borkowski, Butt, Bykov, Bykov, Cowsik, Decourchelle, Delaney, Dyer, Eichler, Enomoto, Favata, Ghavamian, Ghavamian, Gotthelf, Hamilton, Hughes, Hunter, Itoh, Jacco Vink, Jones, Koyama, Koyama, Lagage, Laming, Laming, Laming, Longair, Malkov, McKee, Muraishi, Reed, Reimer, Reynolds, Reynolds, Reynolds, Rho, Schmitz, Schmitz, Slane, Slane, Smith, Stephenson, Tanimori, Torres, van der Laan, Vink, Vink, Vink, Vink, Vink, Vink, Zeldovich   +63 more
core   +2 more sources

Nonthermal X-ray emission from young Supernova Remnants [PDF]

, 2000
The cosmic-ray spectrum up to the knee ($E\sim 10^{15}$ eV) is attributed to acceleration processes taking place at the blastwaves which bound supernova remnants. Theoretical predictions give a similar estimate for the maximum energy which can be reached
Achterberg, Abraham, Gallant, Yves A., van der Swaluw, Eric   +2 more
core   +3 more sources

Multiple-supernova remnants [PDF]

International Astronomical Union Colloquium, 1989
ABSTRACTThe present observational and theoretical status of multiple-supernova remnants is briefly reviewed, and evolutionary models of the remnants around OB associations are presented. The remnants are followed for up to almost 30 Myr in various galactic environments (Gaussian or composite disks combined with cold or hot halos).
openaire   +2 more sources

The Radio Signatures of the First Supernovae

, 2013
Primordial stars are key to primeval structure formation as the first stellar components of primeval galaxies, the sources of cosmic chemical enrichment and likely cosmic reionization, and they possibly gave rise to the supermassive black holes residing ...
Abel, Abel, Alvarez, Avery Meiksin, Beers, Bromm, Bromm, Cayrel, Chatzopoulos, Chevalier, Chevalier, Chiaki, Clark, Daniel J. Whalen, Fomalont, Frebel, Furlanetto, Gould, Greif, Greif, Greif, Greif, Greif, Hasegawa, Heavens, Heger, Hosokawa, Hummel, Iliev, Iliev, Ioka, Iwamoto, Joggerst, Joggerst, Johnson, Johnson, Kitayama, Kitayama, Komatsu, Koyama, Lai, Mackey, Malkov, Meiksin, Moriya, Muxlow, Nagakura, Nakamura, Norris, Oh, Owen, O’Shea, O’Shea, Pan, Reed, Rybicki, Scannapieco, Schaerer, Scheuer, Shapiro, Shapiro, Smith, Smith, Soderberg, Stacy, Stacy, Susa, Susa, Tanaka, Turk, Weiler, Whalen, Whalen, Whalen, Whalen, Whalen, Whalen, Whalen, Whalen, Whalen, Wise, Wise, Woosley, Yoshida   +83 more
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Did Egret Detect Distant Supernova Remnants? [PDF]

, 2003
It might be thought that supernova remnants (SNRs) more distant than a few kiloparsec from Earth could not have been detected by the EGRET experiment. This work analyzes the observational status of this statement in the light of new CO studies of SNRs ...
Becker, Butt, Butt, Case, Caswell, Dame, Dame, Diego F Torres, Georgelin, Grabelsky, Gustavo E Romero, Halpern, Halpern, Harrus, Huang, Huang, Jorge A Combi, Koralesky, Mukherjee, Muraishi, Romero, Sigl, Slane, Swanenburg, Thomas M Dame, Thompson, Torres, Torres, Torres, Yousaf M Butt   +29 more
core   +3 more sources