Results 121 to 130 of about 21,733 (235)

A Very-High-Energy Gamma-Ray View of the Transient Sky

Universe
The development of the latest generation of Imaging Atmospheric Cherenkov Telescopes (IACTs) over recent decades has led to the discovery of new extreme astrophysical phenomena in the very-high-energy (VHE, E > 100 GeV) gamma-ray regime.
Alessandro Carosi, Alicia López-Oramas
doaj   +1 more source

Dust production in Supernovae [PDF]

, 2013
Supernovae have long been proposed to be efficient dust producers in galaxies. Observations in the mid-infrared indicate that dust forms a few hundred days after the stellar explosion.
Isabelle Cherchneff, Cherchneff, Isabelle   +1 more
core   +1 more source

Strong Progenitor Age Bias in Supernova Cosmology and Alignment with DESI BAO

Universe
Supernova (SN) cosmology is based on the assumption that the luminosity of type Ia SNe, after the luminosity standardization process, remains invariant with progenitor age.
Chul Chung, Young-Wook Lee, Junhyuk Son, Seunghyun Park, Hyejeon Cho   +4 more
doaj   +1 more source

Scheduled Discoveries of 7+ High-Redshift Supernovae: First Cosmology Results and Bounds on $q_0$ [PDF]

, 1995
15 pages, 6 Postscript figures, uuencoded uses crckapb.sty and psfig.sty. To appear in Thermonuclear Supernovae (NATO ASI), eds. R. Canal, P. Ruiz-LaPuente, and J. Isern. Postscript version is also available at http://www-supernova.lbl.gov/Our search for
Kim, A., Boyle, B., Goldhaber, G., Kim, M., Groom, D., Mould, J., Glazebrook, K., Pennypacker, C., Ellis, R., Newberg, H., Deustua, S., Perlmutter, S., Lee, J., R., Lee, J.,, Pain, R., Gabi, S., Hook, I., Irwin, M., Mcmahon, R., Carter, D., Matheson, T., Dopita, M., Couch, W., Bunclark, P., Goobar, A., Filippenko, A. V., Small, I.   +26 more
core  

Multiwavelength View of Circumstellar Interaction in Supernovae

Universe
The interaction of post-explosion supernova ejecta with the surrounding circumstellar medium creates emissions across the electromagnetic spectrum. Since the circumstellar medium is created by the mass lost from the progenitor star, it carries tell-tale ...
Poonam Chandra
doaj   +1 more source

Young Core‐Collapse Supernova Remnants and Their Supernovae [PDF]

The Astrophysical Journal, 2005
43 pages, ApJ, revised, discussion of 3C58 changed, in press for Feb.
openaire   +2 more sources

Cosmic ray contributions from rapidly rotating stellar mass black holes: cosmic Ray GeV to EeV proton and anti-proton sources

Frontiers in Astronomy and Space Sciences
In Radio Super Novae (RSNe) a magnetic field of (B × r) = 1016.0±0.12 Gauss × cm is observed; these are the same numbers for Blue Super Giant (BSG) star explosions as for Red Super Giant (RSG) star explosions, despite their very different wind properties.
M. Allen, P. L. Biermann, P. L. Biermann, A. Chieffi, R. Chini, R. Chini, R. Chini, D. Frekers, L. Gergely, L. Gergely, Gopal-Krishna, B. Harms, I. Jaroschewski, P. S. Joshi, P. P. Kronberg, E. Kun, A. Meli, A. Meli, E.-S. Seo, T. Stanev   +19 more
doaj   +1 more source

Supernovae di tipo Ia: progenitori e nucleosintesi [PDF]

, 2022
È ormai ampiamente condivisa l'idea che le supernovae di tipo Ia abbiano origine dal bruciamento nucleare esplosivo di una nana bianca in un sistema binario, ma ci sono ancora molte incertezze sulla natura della sua compagna.
Valerin, Giorgio
core  

Aspherical supernovae [PDF]

, 2004
Although we know that many supernovae are aspherical, the exact nature of their geometry is undetermined. Because all the supernovae we observe are too distant to be resolved, the ejecta structure can't be directly imaged, and asymmetry must be inferred ...
Kasen, Daniel Nathan
core  

Supernova theory and supernova 1987A

The Astrophysical Journal, 1987
The implications of Supernova 1987A are examined and compared with theoretical expectations. The relatively low luminosity follows from the progenitor having lower than solar abundances. The explosion energy is (1.0-2.0) x 10 to the 51st ergs for a 15 solar mass star.
openaire   +1 more source