Results 41 to 50 of about 127,486 (216)
Cosmological Results from High-z Supernovae [PDF]
, 2003 The High-z Supernova Search Team has discovered and observed eight new supernovae in the redshift interval z = 0.3-1.2. These independent observations, analyzed by similar but distinct methods, confirm the results of Riess and Perlmutter and coworkers ...
HIGH-z Supernovae +25 more
semanticscholar +1 more source
Interstellar extinction from photometric surveys: application to four high-latitude areas
Open Astronomy, 2018 Information on interstellar extinction and dust properties may be obtained from modern large photometric surveys data. Virtual Observatory facilities allow users to make a fast and correct cross-identification of objects from various surveys. It yields a
Malkov Oleg +13 more
doaj +1 more source
High Energy Emission of Symbiotic Recurrent Novae: RS Oph and V407 Cyg
Open Astronomy, 2012 Recurrent novae occurring in symbiotic binaries are candidate sources of high energy photons, reaching GeV energies. Such emission is a consequence of particle acceleration leading to pion production.
Hernanz M., Tatischeff V.
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Very massive stars, pair-instability supernovae and intermediate-mass black holes with the sevn code [PDF]
, 2017 Understanding the link between massive ($\gtrsim 30$ M$_{\odot{}}$) stellar black holes (BHs) and their progenitor stars is a crucial step to interpret observations of gravitational-wave events.
M. Spera, M. Mapelli
semanticscholar +1 more source
The Most Luminous Supernovae [PDF]
Annual Review of Astronomy and Astrophysics, 2018 Over a decade ago, a group of supernova explosions with peak luminosities far exceeding (often by >100 times) those of normal events has been identified. These superluminous supernovae (SLSNe) have been a focus of intensive study.
A. Gal-yam
semanticscholar +1 more source
The Hubble Diagram: Jump from Supernovae to Gamma-ray Bursts
Universe, 2022 The Hubble diagram (HD) is a plot that contains a luminous distance modulus presented with respect to the redshift. The distance modulus–redshift relation of the most well-known “standard candles”, the type Ia supernovae (SN), is a crucial tool in ...
Nikita Yu. Lovyagin +3 more
doaj +1 more source
Pulsational Pair-instability Supernovae in Very Close Binaries [PDF]
Astrophysical Journal, 2018 Pair-instability and pulsational pair-instability supernovae (PPISNe) have not been unambiguously observed so far. They are, however, promising candidates for the progenitors of the heaviest binary black hole (BBH) mergers detected. If these BBHs are the
P. Marchant +6 more
semanticscholar +1 more source
Neutrino Flavor Conversions in High-Density Astrophysical and Cosmological Environments
Universe, 2022 Despite being a well understood phenomenon in the context of current terrestrial experiments, neutrino flavor conversions in dense astrophysical environments probably represent one of the most challenging open problems in neutrino physics.
Francesco Capozzi, Ninetta Saviano
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Upper limits on bolometric luminosities of ten type Ia supernova progenitors from Chandra observations [PDF]
, 2012 We present an analysis of Chandra observations of the position of ten nearby (< 25 Mpc) type Ia supernovae, taken before the explosions. No sources corresponding to progenitors were found in any of the observations.
Borkowski +70 more
core +3 more sources
The Gravitational Wave Signal from Core-collapse Supernovae [PDF]
Astrophysical Journal, 2018 We study gravitational waves (GWs) from a set of 2D multigroup neutrino radiation hydrodynamic simulations of core-collapse supernovae (CCSNe). Our goal is to systematize the current knowledge about the post-bounce CCSN GW signal and recognize the ...
V. Morozova +3 more
semanticscholar +1 more source