#supernovae

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4 papers match

astro-ph.HE2026

JWST Spectra Indicate a Large Mass of Postshock Dust Formed by SN 2010jl

Nathan Smith, Melissa Shahbandeh, Ori D. Fox +22

The paper reports JWST mid‑infrared spectra of the Type IIn supernova SN 2010jl 13 years after explosion, revealing a large (~0.2 M☉) mass of warm dust formed in the post‑shock reg…

#supernovae#dust formation#infrared spectroscopy#circumstellar interaction
astro-ph.GA2026

The influence of feedback on the baryonic content of haloes in the COLIBRE simulations

Jonathan J. Davies, Joop Schaye, Filip Huško +7

The paper uses the COLIBRE cosmological simulations to study how supernova and AGN feedback affect the gas mass fraction of dark matter haloes across different masses, showing a no…

#halo gas fraction#feedback processes#supernovae#active galactic nuclei
astro-ph.HE2026

Gamma-ray burst progenitors revisited

Andrew J. Levan, Jillian C. Rastinejad, Helena-Margaret S. Grabham +11

The paper examines nearby long-duration gamma-ray bursts that lack supernova signatures, finding that many may originate from compact object mergers rather than massive stars, and…

#gamma-ray bursts#progenitor systems#kilonovae#compact object mergers
astro-ph.HE2026

Coupled Shock Cooling and Radioactive Heating in the Type IIb Supernova SN 2024aecx: An Extended Envelope and Rapid Optical Decline

Na Wei, Yu-Hao Zhang, Liang-Duan Liu +4

The paper models the double-peaked light curve of the Type IIb supernova SN 2024aecx by combining early shock‑cooling emission with later radioactive heating in a time‑dependent ra…

#supernovae#shock cooling#radioactive heating#type ii-b