Results 51 to 60 of about 140,146 (287)

Supernovae and Supernova, Remnants

open access: yesThe Astronomical Journal, 1968
Supernovae remnants evolution, properties and galactic distribution, discussing criteria for catalog listing and remnants as X ray ...
A. Poveda, L. Woltjer
openaire   +1 more source

Lensing magnification of supernovae in the GOODS-fields [PDF]

open access: yes, 2005
Gravitational lensing of high-redshift supernovae is potentially an important source of uncertainty when deriving cosmological parameters from the measured brightness of Type Ia supernovae, especially in deep surveys with scarce statistics.
A. Goobar   +6 more
core   +1 more source

Observable signatures of dark photons from supernovae [PDF]

open access: yesJournal of High Energy Physics, 2019
A dark photon is a well-motivated new particle which, as a component of an associated dark sector, could explain dark matter. One strong limit on dark photons arises from excessive cooling of supernovae.
William DeRocco   +4 more
semanticscholar   +1 more source

The Use of Multiwavelength Archival Observational Data for Scientific Discoveries: a Case of the Supernova Remnant Cassiopeia A

open access: yesOpen Astronomy, 2012
Most of the high-quality astronomical data after a proprietary period of typically one year are provided to open access, allowing researchers to complement their observations with the archival data in other wavelength bands, thus improving quality of the
Docenko Dmitrijs
doaj   +1 more source

Induced Gravitational Collapse, Binary-Driven Hypernovae, Long Gramma-ray Bursts and Their Connection with Short Gamma-ray Bursts

open access: yesUniverse, 2019
There is increasing observational evidence that short and long Gamma-ray bursts (GRBs) originate in different subclasses, each one with specific energy release, spectra, duration, etc, and all of them with binary progenitors.
J. A. Rueda, R. Ruffini, Y. Wang
doaj   +1 more source

On the Cosmological Transformation of Light: A Gravitational Analogue of the Photoelectric Effect

open access: yesReports in Advances of Physical Sciences, 2022
It is known that very distant galaxies, much like our own, show remarkably high receding velocities, the magnitude of which increases with distance.
L. Nash
doaj   +1 more source

Radio supernovae [PDF]

open access: yesProceedings of 8th European VLBI Network Symposium — PoS(8thEVN), 2007
In this article I will briely review the current status of radio observations of nearby supernovae and their remnants. This review will initially address observations of the radio light curves of nearby core-collapse supernovae, followed by a more detailed summary of recent Very Long Baseline Interferometric observations of the expansion of nearby ...
openaire   +2 more sources

Supernovae sparked by dark matter in white dwarfs [PDF]

open access: yesPhysical Review D, 2019
It was recently demonstrated that asymmetric dark matter can ignite supernovae by collecting and collapsing inside lone sub-Chandrasekhar mass white dwarfs, and that this may be the cause of Type Ia supernovae.
Javier F. Acevedo, J. Bramante
semanticscholar   +1 more source

Weighing Cosmological Models with SNe Ia and Gamma Ray Burst Redshift Data

open access: yesUniverse, 2019
Many models have been proposed to explain the intergalactic redshift using different observational data and different criteria for the goodness-of-fit of a model to the data. The purpose of this paper is to examine several suggested models using the same
Rajendra P. Gupta
doaj   +1 more source

Supernovae and transients with circumstellar interaction [PDF]

open access: yesRoyal Society Open Science, 2020
It is 30 years since the characteristic signatures of interaction with circumstellar material (CSM) were first observed in a core-collapse supernova. Since then, CSM interaction has been observed and inferred across a range of transients, from the low ...
Morgan Fraser
doaj   +1 more source

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