Results 51 to 60 of about 2,839 (226)
JWST MIRI Imager Observations of Supernova SN 1987A
The Astrophysical JournalThere exist very few mid-infrared (IR) observations of supernovae (SNe) in general. Therefore, SN 1987A, the closest visible SN in 400 yr, gives us the opportunity to explore the mid-IR properties of SNe, the dust in their ejecta, and the surrounding ...
P. Bouchet +33 more
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A Luminous Red Supergiant and Dusty Long-period Variable Progenitor for SN 2023ixf
The Astrophysical Journal Letters, 2023 We analyze pre-explosion near- and mid-infrared (IR) imaging of the site of SN 2023ixf in the nearby spiral galaxy M101 and characterize the candidate progenitor star.
Jacob E. Jencson +25 more
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Cherenkov Telescope Array Observatory: Die Zukunft der Gammaastronomie
Physik in unserer Zeit, Volume 57, Issue 1, Page 10-18, January 2026.Im Jahr 1989 hat das Wipple‐Observatorium die erste Quelle hochenergetischer Gammastrahlung entdeckt. 2002 waren dann sechs Quellen bekannt, 2024 schon mehr als 300. Und das ist immer noch lediglich die Spitze des Eisbergs in der jungen Geschichte der Gammaastronomie.
Daniela Hadasch, Daniel Mazin
wiley +1 more source
Carnegie Supernova Project-II: Near-infrared spectral diversity and template of Type Ia Supernovae [PDF]
, 2022 Jing Lü +32 more
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Reading Research Quarterly, Volume 61, Issue 1, January/February/March 2026.In this paper, The Professional Imaginary of Writing Pedagogy is presented as an ideal. This imaginary brings teacher knowledge about the social imaginary for literacy education into relation with teacher professional knowledge and beliefs about writing, to promote pedagogies and practices for writing that are inclusive, expansive, responsive and ...
Clare Dowdall
wiley +1 more source
Hamas's October 7 Attack: Analysis of an “Antagonistic” Crisis
Public Administration Review, Volume 86, Issue 1, Page 87-96, January/February 2026.ABSTRACT The aim of the article is to interpret the Hamas attack of October 7, 2023 in light of crisis management theories, seeking to draw from this event some general lessons about the nature of crises, their determinants, and how they are managed. More specifically, the article addresses three questions: (1) Why did Israel underestimate the warning ...
Federico Toth
wiley +1 more source
Zeeman splitting in structure and composition of ultramagnetized spherical nuclei
Physics Letters B, 2018 Properties and mass distribution of ultramagnetized atomic nuclei that arise in heavy-ion collisions, magnetar crusts, during Type II supernova explosions and neutron star mergers are analyzed.
V.N. Kondratyev
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Advances in Astronomy, Volume 2026, Issue 1, 2026.We examine the weak cosmic censorship conjecture (WCCC) violation by throwing a charged and rotating test particle into a Kerr–Newman–modified gravity black hole (KN–MOG BH). The result depends on several factors, such as the relative sign of the particle’s charge and its direction of rotation with respect to black hole (BH).
Waqar Ahmad +2 more
wiley +1 more source
The Astrophysical Journal Letters, 2023 We present UV and/or optical observations and models of SN 2023ixf, a type II supernova (SN) located in Messier 101 at 6.9 Mpc. Early time ( flash ) spectroscopy of SN 2023ixf, obtained primarily at Lick Observatory, reveals emission lines of H i , He i ...
W. V. Jacobson-Galán +67 more
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Light echoes - Type II supernovae
The Astrophysical Journal, 1987 Type II supernovae (SNs) light curves show a remarkable range of shapes. Data have been collected for the 12 Type II SNs that have light curve information for more than four months past maximum. Contrary to previous reports, it is found that (1) the decay rate after 100 days past maximum varies by almost an order of magnitude and (2) the light curve ...
openaire +1 more source