output
19962026
Showing 2026 · astro-ph.HEShow all

6 papers · 2 filters

astro-ph.HE2026

Radio Follow Up of a Sub-threshold GRB in the Sky Localization Area of GW241125

Natalie Gottschlich, Alessandra Corsi, S. Bradley Cenko +5

Since the Fermi satellite's identification of a candidate -ray burst (GRB) temporally coincident with GW150914, several tentative, and often debated, associations between electr…

astro-ph.HE2026

Inferring host environment properties and gravitational-wave decay time from the eccentricity measurement of dynamically captured binaries

A. Vincent Paul, Parthapratim Mahapatra, Marc Favata +1

Dynamical capture in dense stellar environments is a promising channel for producing eccentric compact binary mergers. Although there have been no confident detections of eccentric…

astro-ph.HE2026

The extremely low-luminosity Type Iax SNe 2022ywf and 2023zgx

Barnabás Barna, Dominik Bánhidi, Tamás Szalai +25

We present the optical follow-up of SNe 2022ywf and 2023zgx, two examples from the Iax subclass of thermonuclear supernova (SN) events. With peak absolute magnitudes of $M_\mathrm{…

astro-ph.HE2026

3D insights into SN 1987A: ALMA observations compared to hydrodynamical explosion simulations

R. Wesson, M. Gabler, M. Lyons +9

We obtain three-dimensional distributions of CO and SiO molecules from high spatial resolution (0.03--0.06") ALMA observations of SN 1987A at two different epochs. The evolution be…

astro-ph.HE2026

The nearby He-rich superluminous supernova SN 2021bnw during photospheric phases

A. Fiore, A. Kozyreva, L. Yan +40

Aim. We present and interpret the data of the nearby hydrogen-deficient but helium-rich superluminous supernova SN 2021bnw which reached a magnitude of -20.7 at maximum luminosity…

astro-ph.HE2026★ 4 cited

AT2024wpp: An Extremely Luminous Fast Ultraviolet Transient Powered by Accretion onto a Black Hole

Daniel A. Perley, Anna Y. Q. Ho, Zoë McGrath +69

We present the discovery of AT 2024wpp ("Whippet"), a fast and luminous 18cow-like transient. At a redshift of z=0.0868, revealed by Keck Cosmic Web Imager spectroscopy of its fain…