Results 21 to 30 of about 48,520 (216)

Cosmology with Type II supernovae [PDF]

International 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).
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Carnegie Supernova Project-II: Near-infrared Spectroscopic Diversity of Type II Supernovae [PDF]

The Astrophysical Journal, 2019
AbstractWe present 81 near-infrared (NIR) spectra of 30 Type II supernovae (SNe II) from theCarnegie Supernova Project-II(CSP-II), the largest such data set published to date. We identify a number of NIR features and characterize their evolution over time. The NIR spectroscopic properties of SNe II fall into two distinct groups.
S. Davis, E. Y. Hsiao, C. Ashall, P. Hoeflich, M. M. Phillips, G. H. Marion, R. P. Kirshner, N. Morrell, D. J. Sand, C. Burns, C. Contreras, M. Stritzinger, J. P. Anderson, E. Baron, T. Diamond, C. P. Gutiérrez, M. Hamuy, S. Holmbo, M. M. Kasliwal, K. Krisciunas, S. Kumar, J. Lu, P. J. Pessi, A. L. Piro, J. L. Prieto, M. Shahbandeh, N. B. Suntzeff   +26 more
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Progenitors of Type IIb Supernovae. II. Observable Properties [PDF]

The Astrophysical Journal, 2020
Abstract Type IIb supernovae (SNe IIb) present a unique opportunity for investigating the evolutionary channels and mechanisms governing the evolution of stripped-envelope SN progenitors due to a variety of observational constraints.
Niharika Sravan, Pablo Marchant, Vassiliki Kalogera, Dan Milisavljevic, Raffaella Margutti   +4 more
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Type II supernova energetics

The Astrophysical Journal, 1985
In this paper we exploit the fact that the collapsing core of a massive star, at the endpoint of its thermonuclear life, rapidly becomes hydrostatic after bouncing at nuclear densities. The energy transferred by pdV work from the inner unshocked core as it becomes hydrostatic to the bounce shock in the outer core is, to a good approximation, the ...
J. M. Lattimer, A. Burrows, A. Yahil
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Peculiar Type II Supernovae from Blue Supergiants [PDF]

, 2011
The vast majority of Type II supernovae (SNe) are produced by red supergiants (RSGs), but SN 1987A revealed that blue supergiants (BSGs) can produce members of this class as well, albeit with some peculiar properties.
Aldering, Alexei V. Filippenko, Anderson, Arcavi, Arnett, Arnett, Baklanov, Barbon, Barbon, Baron, Bessell, Blinnikov, Cardelli, Chieffi, Daniel Kasen, Dessart, Dessart, Dessart, Dessart, Dovi Poznanski, Eastman, Fabricant, Filippenko, Filippenko, Filippenko, Filippenko, Foley, Ganeshalingam, Hamuy, Hamuy, Hamuy, Hamuy, Hamuy, Hanuschik, Horne, Io K. W. Kleiser, Jeffrey M. Silverman, Jha, Jones, Kasen, Kirshner, Kirshner, Langer, Leonard, Leonard, Leonard, Leonard, Li, Li, Li, Madison, Matheson, Matheson, Miller, Modjaz, Mohan Ganeshalingam, Nadyozhin, Nugent, Olivares, Papenkova, Pastorello, Peter Challis, Peter E. Nugent, Popov, Poznanski, Poznanski, Richmond, Robert P. Kirshner, Ryan Chornock, Schlegel, Schmitz, Shigeyama, Smartt, Springob, Storm, Thomas Matheson, Timothy R. Young, Turatto, Utrobin, Utrobin, Utrobin, Wade, Weidong Li, Woodings, Woosley, Woosley, Woosley, Young   +87 more
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The Dusty Red Supergiant Progenitor and the Local Environment of the Type II SN 2023ixf in M101

The Astrophysical Journal Letters, 2023
As one of the closest supernovae (SNe) in the last decade, SN 2023ixf is an unprecedented target to investigate the progenitor star that exploded. However, there is still significant uncertainty in the reported progenitor properties.
Zexi Niu, Ning-Chen Sun, Justyn R. Maund, Yu Zhang, Ruining Zhao, Jifeng Liu   +5 more
doaj   +1 more source

Dynamics of Type-II Supernovae [PDF]

International 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
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Broad Band Polarimetry of Supernovae: SN1994D, SN1994Y, SN1994ae, SN1995D and SN 1995H [PDF]

, 1996
We have made polarimetric observations of three Type Ia supernovae (SN Ia) and two type II supernovae (SN II). No significant polarization was detected for any of the SN Ia down to the level of 0.2\%, while polarization of order $1.0\%$ was detected for ...
Clocchiatti, Alejandro, Li, Zongwei, Wang, Lifan, Wheeler, J. Craig   +3 more
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Type II supernova diversity [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractIt is now firmly established that at a significant fraction of hydrogen-rich type II supernovae (SNe II) arise from red supergiant progenitors. However, a large diversity of SN properties exist, and it is presently unclear how this can be understood in terms of progenitor differences and pre-SN stellar evolution. In this contribution, I present
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Type-II supernovae and neutrino magnetic moments [PDF]

Astroparticle Physics, 1999
11 pages, 5 figures, latex file, final version, references ...
Nunokawa, Hiroshi, Tomàs, Ricard, Furtado Valle, José Wagner   +2 more
openaire   +3 more sources