A. L. Westerling

ORCID: 0009-0003-8229-0127
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Research Areas
  • Gamma-ray bursts and supernovae
  • Pulsars and Gravitational Waves Research
  • Astrophysical Phenomena and Observations

University of California, Santa Cruz
2023

Abstract 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 obtained primarily Lick Observatory, reveals emission lines H i , He i/ii C iv N iii/iv/v with narrow core broad, symmetric wings arising from the photoionization dense, close-in circumstellar material (CSM) around progenitor star prior to shock breakout. These electron-scattering broadened line profiles persist for ∼8 days...

10.3847/2041-8213/acf2ec article EN cc-by The Astrophysical Journal Letters 2023-09-01
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