activity
20212026
most citedThe X-CLASS survey: A catalogue of 1646 X-ray-selected galaxy clusters up to z1.5

40 citations · 121 across the 16 of their papers we have counts for

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5 papers · 1 filter

astro-ph.HE2025★ 1 cited

Eruptive mass loss less than a year before the explosion of superluminous supernovae. II. A systematic search for pre-explosion eruptions with VLT/X-shooter

A. Gkini, C. Fransson, R. Lunnan +22

We present X-shooter observations of a sample of 21 hydrogen-poor superluminous supernovae (SLSNe-I), spanning a redshift range of z=0.13-0.95, aimed at searching for shells of cir…

astro-ph.HE2025

SN 2021aaev: a Hydrogen-Rich Superluminous Supernova with Early Flash and Long-Lived Circumstellar Interaction in an Unusual Host Environment

Yang Hu, Ragnhild Lunnan, Priscila J. Pessi +25

We present photometric and spectroscopic observations of SN\,2021aaev, a hydrogen-rich, superluminous supernova with persistent (at least days) narrow Balmer lines (SLSN-…

astro-ph.HE2025

The ambiguous AT2022rze: Changing-look AGN mimicking a supernova in a merging galaxy system

P. J. Pessi, R. Lunnan, J. Sollerman +36

AT2022rze is a luminous, ambiguous transient located South-East of the geometric center of its host galaxy at redshift z = 0.08. The host appears to be formed by a merging galaxy s…

astro-ph.HE2025★ 11 cited

The Type I Superluminous Supernova Catalogue II: Spectroscopic Evolution in the Photospheric Phase, Velocity Measurements, and Constraints on Diversity

Aysha Aamer, Matt Nicholl, Sebastian Gomez +29

Hydrogen-poor superluminous supernovae (SLSNe) are among the most energetic explosions in the universe, reaching luminosities up to 100 times greater than those of normal supernova…

astro-ph.HE2025

Precursor Activity Preceding Interacting Supernovae I: Bridging the Gap with SN 2022mop

S. J. Brennan, S. Barmentloo, S. Schulze +41

Over the past two decades, an increasing number of transients have shown luminous activity at their explosion sites weeks to years before an interacting supernova (SN) is observed.…