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189 papers
Preparing for Gaia Searches for Optical Counterparts of Gravitational Wave Events during O4
Sumedha Biswas, Zuzanna Kostrzewa-Rutkowska, Peter G. Jonker +9
The discovery of gravitational wave (GW) events and the detection of electromagnetic counterparts from GW170817 has started the era of multimessenger GW astronomy.The field has bee…
AT2022aedm and a new class of luminous, fast-cooling transients in elliptical galaxies
M. Nicholl, S. Srivastav, M. D. Fulton +49
We present the discovery and extensive follow-up of a remarkable fast-evolving optical transient, AT2022aedm, detected by the Asteroid Terrestrial impact Last Alert Survey (ATLAS).…
Late time HST UV and optical observations of AT~2018cow: extracting a cow from its background
Anne Inkenhaag, Peter G. Jonker, Andrew J. Levan +4
The bright, blue, rapidly evolving AT2018cow is a well-studied peculiar extragalactic transient. Despite an abundance of multi-wavelength data, there still is no consensus on the n…
Delayed Appearance and Evolution of Coronal Lines in the TDE AT2019qiz
P. Short, A. Lawrence, M. Nicholl +17
Tidal disruption events (TDEs) occur when a star gets torn apart by a supermassive black hole as it crosses its tidal radius. We present late-time optical and X-ray observations of…
AT2023fhn (the Finch): a Luminous Fast Blue Optical Transient at a large offset from its host galaxy
A. A. Chrimes, P. G. Jonker, A. J. Levan +8
Luminous Fast Blue Optical Transients (LFBOTs) - the prototypical example being AT2018cow - are a rare class of events whose origins are poorly understood. They are characterised b…
Extragalactic FXT Candidates Discovered by Chandra (2014-2022)
J. Quirola-Vásquez, F. E. Bauer, P. G. Jonker +9
Extragalactic fast X-ray transients (FXTs) are short flashes of X-ray photons of unknown origin that last a few minutes to hours. We extend the search for extragalactic FXTs from Q…