Results 91 to 100 of about 6,421 (225)

The New Status Qvo? SN 2021qvo Is Another 2003fg-like Type Ia Supernova with a Rising Light-curve Bump

The Astrophysical Journal
In recent years, multiple Type Ia supernovae (SNe Ia) have been observed with “bumps” in their rising light curves shortly after the explosion. Here, we present SN 2021qvo: an SN Ia that exhibits a clear early bump in photometry obtained by the Young ...
I. A. Abreu Paniagua, W. B. Hoogendam, D. O. Jones, G. Dimitriadis, R. J. Foley, C. Gall, J. O’Brien, K. Taggart, C. R. Angus, C. Ashall, K. Auchettl, D. A. Coulter, K. W. Davis, T. de Boer, A. Do, H. Gao, L. Izzo, C.-C. Lin, T. B. Lowe, Z. Lai, R. Kaur, M. Y. Kong, A. Rest, M. R. Siebert, S. K. Yadavalli, Y. Zenati, Q. Wang   +26 more
doaj   +1 more source

Detailed kinship estimation for detecting bias among breeding families in a reintroduced population of the endangered bagrid catfish Tachysurus ichikawai

Population Ecology, Volume 67, Issue 2, Page 109-124, April 2025.
In the process of captive breeding and reintroduction of endangered animal species, it is crucial to minimize familial bias in reproductive success during the reintroduction phase to preserve genetic diversity. In this study, we attempted to identify the familial lineage of individuals of the endangered bagrid fish Tachysurus ichikawai born at the ...
Hinano Mizuno, Kouji Nakayama, Tetsuya Akita, Yasuyuki Hashiguchi, Tomonori Osugi, Hirohiko Takeshima   +5 more
wiley   +1 more source

From out of the Blue: Swift Links 2002es-like, 2003fg-like, and Early Time Bump Type Ia Supernovae

The Astrophysical Journal
We collect a sample of 42 Type Ia supernovae (SNe Ia) with Swift UV photometry and well-measured early time light-curve rises and find that 2002es-like and 2003fg-like SNe Ia have different prepeak UV color evolutions compared to normal SNe Ia and other ...
W. B. Hoogendam, B. J. Shappee, P. J. Brown, M. A. Tucker, C. Ashall, A. L. Piro   +5 more
doaj   +1 more source

Can We Draw Conclusions on Supernova Shock Wave Propagation Using Short‐Lived Radioactive Isotopes?

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT We run a three‐dimensional Galactic chemical evolution (GCE) model to follow the propagation of 53Mn (exclusively produced from type Ia supernovae, SNIa), 60Fe (exclusively produced from core‐collapse supernovae, CCSNe), 182Hf (exclusively produced from intermediate mass stars, IMSs), and 244Pu (exclusively produced from neutron star mergers ...
Benjamin Wehmeyer, Andrés Yagüe López, Benoit Côté, Maria K. Petö, Chiaki Kobayashi, Maria Lugaro   +5 more
wiley   +1 more source

Cellular Dynamics of Helium-rich Detonation on Sub-Chandrasekhar Mass White Dwarf

The Astrophysical Journal
In previous hydrodynamic studies on detonation in the context of Type Ia supernovae (SNe Ia), consideration of cellular structures has been limited in the evaluation of a criterion in initiation, propagation, quenching, and the resolution requirement of ...
Kazuya Iwata, Keiichi Maeda
doaj   +1 more source

Dust around Type Ia Supernovae [PDF]

The Astrophysical Journal, 2005
ApJL, in ...
openaire   +3 more sources

Euler–Heisenberg Black Hole Surrounded by Quintessence in the Background of Perfect Fluid Dark Matter: Thermodynamics, Shadows, and Quasinormal Modes

Fortschritte der Physik, Volume 73, Issue 3, March 2025.
Abstract Current observations show that a significant fraction of the Universe is composed of dark energy and dark matter. In this paper, the simultaneous effects of these dark sectors on the Euler–Heisenberg black hole are investigated, using the quintessence matter field and perfect fluid to model them. In particular, the black hole's thermodynamics,
Bilel Hamil, Bekir Can Lütfüoğlu
wiley   +1 more source

Modelling turbulent deflagrations in type Ia supernovae

, 2005
We present an overview of the current state of multidimensional modelling of type Ia supernovae and an example for surprising consequences of impoving the physics of the model.
Klingenberg, C., Niemeyer, J. C., Schmidt, W.   +2 more
core   +1 more source

Type Ia supernovae: spectroscopic surprises [PDF]

, 2004
Recent observations have extended the range of diversity among spectra of Type Ia supernovae. I briefly discuss SN Ia explosion models in the spectroscopic context, the observed diversity, and some recent results from direct analysis with the Synow code for one normal and two peculiar SNe Ia.
openaire   +2 more sources

Cosmic expansion in homogeneous and inhomogeneous universes : supernovae type Ia as cosmic probes

, 2010
Seikel M. Cosmic expansion in homogeneous and inhomogeneous universes : supernovae type Ia as cosmic probes. Bielefeld (Germany): Bielefeld University; 2010.Since it has been discovered in the late 1990s that the universe is likely to be expanding ...
Seikel, Marina
core