Results 21 to 30 of about 2,618 (181)

The iron yield of normal Type II supernovae [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2021
ABSTRACT We present 56Ni mass estimates for 110 normal Type II supernovae (SNe II), computed here from their luminosity in the radioactive tail. This sample consists of SNe from the literature, with at least three photometric measurements in a single optical band within 95–320 d since explosion.
Ó Rodríguez   +3 more
openaire   +2 more sources

Understanding Type II Supernovae [PDF]

open access: yesInternational Astronomical Union Colloquium, 2005
SummaryWe present the results of a systematic analysis of a group of Type II plateau supernovae that span a large range in luminosities, from faint objects like SN 1997D and 1999br to very luminous events like SN 1992am. The physical properties of the supernovae appear to be related to the plateau luminosity or the expansion velocity.
Zampieri, L., Ramina, M., Pastorello, A.
openaire   +3 more sources

Comparing the Locations of Supernovae to CO (2–1) Emission in Their Host Galaxies

open access: yesThe Astrophysical Journal, 2023
We measure the molecular gas environment near recent (
Ness Mayker Chen   +21 more
doaj   +1 more source

Cosmology with Type II supernovae [PDF]

open access: yesInternational Journal of Modern Physics D, 2019
With the recent progresses on the Type II supernovae, we attempt to investigate whether there does exist new physics beyond the standard cosmological paradigm, i.e. the cosmological constant [Formula: see text] plus cold dark matter ([Formula: see text]CDM).
openaire   +2 more sources

Explosion Parameters of SN 2013df and Properties of Its Progenitor Star [PDF]

open access: yes, 2014
Type IIb supernovae have only recently been identified as a distinct flavor of core-collapse stellar explosions. These supernovae represent a transitional type between Type II and Type Ib supernovae.
Powell, Diana K.   +1 more
core   +1 more source

Topics in Core-Collapse Supernova Theory: The Formation of Black Holes and the Transport of Neutrinos [PDF]

open access: yes, 2012
Core-Collapse Supernovae are one of the most complex astrophysical systems in the universe. They deeply entwine aspects of physics and astrophysics that are rarely side by side in nature.
O'Connor, Evan Patrick
core   +1 more source

The Effects of Thomson Scattering and Chemical Mixing on Early-time Light Curves of Double-peaked Type IIb Supernovae

open access: yesThe Astrophysical Journal, 2023
Previous numerical simulations of double-peaked Type IIb supernova (SN IIb) light curves have demonstrated that the radius and mass of the hydrogen-rich envelope of the progenitor star can significantly influence the brightness and timescale of the early-
Seong Hyun Park   +2 more
doaj   +1 more source

Inferencing Progenitor and Explosion Properties of Evolving Core-collapse Supernovae from Zwicky Transient Facility Light Curves

open access: yesThe Astrophysical Journal, 2023
We analyze a sample of 45 Type II supernovae from the Zwicky Transient Facility public survey using a grid of hydrodynamical models in order to assess whether theoretically driven forecasts can intelligently guide follow-up observations supporting all ...
Bhagya M. Subrayan   +11 more
doaj   +1 more source

SN 2018gk Revisited: the Photosphere, the Central Engine, and the Putative Dust

open access: yesThe Astrophysical Journal, 2023
We perform a comprehensive study of the physical properties of SN 2018gk, which is a luminous Type IIb supernova (SN). We find that the early-time photospheric velocity varies from a larger value to a smaller one before the photosphere reaches a ...
Tao Wang   +3 more
doaj   +1 more source

Dynamics of Type-II Supernovae [PDF]

open access: yesInternational Astronomical Union Colloquium, 1996
Hydrodynamical simulations of type-II supernovae in one and two dimensions are performed for the revival phase of the delayed shock by neutrino energy deposition. Starting with a post-collapse model of the 1.31 Mʘ iron core of a 15 Mʘ star immediately after the stagnation of the prompt shock about 10 ms after core bounce, the models are followed for ...
H.-TH. Janka, E. M. Müller
openaire   +1 more source

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