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20242026
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astro-ph.HE2024

Identification of the optical counterpart of the fast X-ray transient EP240414a

S. Srivastav, T. -W. Chen, J. H. Gillanders +26

Fast X-ray transients (FXTs) are extragalactic bursts of X-rays first identified in archival X-ray data, and now routinely discovered by the Einstein Probe in real time, which is c…

astro-ph.HE2024

Double "acct": a distinct double-peaked supernova matching pulsational pair-instability models

C. R. Angus, S. E. Woosley, R. J. Foley +35

We present multi-wavelength data of SN2020acct, a double-peaked stripped-envelope supernova (SN) in NGC2981 at ~150 Mpc. The two peaks are temporally distinct, with maxima separate…

astro-ph.HE2024

The fast transient AT 2023clx in the nearby LINER galaxy NGC 3799 as a tidal disruption of a very low-mass star

P. Charalampopoulos, R. Kotak, T. Wevers +30

We present an extensive analysis of the optical and UV properties of AT2023clx, the closest TDE to date, that occurred in the nucleus of the interacting LINER galaxy, NGC3799 (z=0.…

astro-ph.HE2024

The Type I Superluminous Supernova Catalog I: Light Curve Properties, Models, and Catalog Description

Sebastian Gomez, Matt Nicholl, Edo Berger +25

We present the most comprehensive catalog to date of Type I Superluminous Supernovae (SLSNe), a class of stripped envelope supernovae (SNe) characterized by exceptionally high lumi…

astro-ph.HE2024

Time-varying double-peaked emission lines following the sudden ignition of the dormant galactic nucleus AT2017bcc

E. J. Ridley, M. Nicholl, C. A. Ward +35

We present a pan-chromatic study of AT2017bcc, a nuclear transient that was discovered in 2017 within the skymap of a reported burst-like gravitational wave candidate, G274296. It…