Results 31 to 40 of about 2,165 (169)
SN 2023ixf: The Closest Supernova of the Decade
UniverseSupernova 2023ixf occurred on 18 May 2023 in the nearby galaxy Messier 101 (D≈6.85 Mpc), making it the closest supernova in the last decade. Following its discovery, astronomers around the world rushed to observe the explosion across the electromagnetic ...
Wynn Jacobson-Galán
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The Large Magellanic Cloud Supernova Remnant MCSNR J0550-6823
The Astrophysical Journal, 2023 We describe radio, optical, and X-ray observations of this rather faint, old Large Magellanic Cloud (LMC) supernova remnant. The [O iii ] emission forms a distinct shell, the remnant of the outer shock, which encloses the radio and X-ray emission and ...
Frederick D. Seward, Sean D. Points
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The Astrophysical Journal, 2023 W present the results of our work testing a version of the Expanding Photosphere Method (EPM) used by Hamuy et al. and Dessart & Hillier to calculate distances to Type II-P supernovae, accounting for the deviations of their luminosities from those of ...
R. C. Mitchell +5 more
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Recent Type II Radio Supernovae
AIP Conference Proceedings, 2007 We present the results of radio observations, taken primarily with the Very Large Array, of Supernovae 1993J, 2001gd, 2001em, 2002hh, 2004dj, and 2004et. We have fit a parameterized model to the multi-frequency observations of each supernova. We compare the observed and derived radio properties of these supernovae by optical classification and discuss ...
C. J. Stockdale +9 more
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Spectral modeling of type II supernovae [PDF]
Astronomy & Astrophysics, 2019 We present substantial extensions to the Monte Carlo radiative transfer code TARDIS to perform spectral synthesis for type II supernovae. By incorporating a non-LTE ionization and excitation treatment for hydrogen, a full account of free–free and bound-free processes, a self-consistent determination of the thermal state and by improving the handling of
C. Vogl +4 more
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Type II Supernova Spectral Diversity. II. Spectroscopic and Photometric Correlations [PDF]
The Astrophysical Journal, 2017 We present an analysis of observed trends and correlations between a large range of spectral and photometric parameters of more than 100 type II supernovae (SNe~II), during the photospheric phase. We define a common epoch for all SNe of 50 days post-explosion where the majority of the sample is likely to be under similar physical conditions.
Claudia P. Gutiérrez +9 more
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TYPE II-P SUPERNOVAE FROM THE SDSS-II SUPERNOVA SURVEY AND THE STANDARDIZED CANDLE METHOD [PDF]
The Astrophysical Journal, 2009 Accepted for publication by ApJ; data used in this paper can be downloaded from http://sdssdp47.fnal.gov/sdsssn/photometry/SNIIp.tgz; citation errors ...
D’andrea, Chris B. +26 more
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The Red Supergiant Progenitor of Type II Supernova 2024ggi
The Astrophysical Journal LettersWe present a detailed analysis of the progenitor and its local environment for the recently discovered Type II supernova (SN) 2024ggi at a distance of about 6.7 Mpc, by utilizing the pre-explosion images from the Hubble Space Telescope and Spitzer Space ...
Danfeng Xiang +10 more
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The Red Supergiant Progenitor of the Type II Supernova 2024abfl
The Astrophysical Journal LettersLinkage between core-collapse supernovae and their progenitors is not fully understood and ongoing effort of searching and identifying the progenitors is needed.
Jingxiao Luo +11 more
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EPJ Web of Conferences, 2015 We present a nucleosynthesis sensitivity study for the γ-process in a Supernova type II model within the NuGrid research platform. The simulations aimed at identifying the relevant local production and destruction rates for the p-nuclei of molybdenum and
Göbel Kathrin +6 more
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