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Extremely energetic supernova explosions embedded in a massive circumstellar medium: the case of SN 2016aps
Akihiro Suzuki, Matt Nicholl, Takashi J. Moriya +1
We perform one-dimensional radiation-hydrodynamic simulations of energetic supernova ejecta colliding with a massive circumstellar medium (CSM) aiming at explaining SN 2016aps, lik…
SN 2017gci: a nearby Type I Superluminous Supernova with a bumpy tail
Achille Fiore, Ting-Wan Chen, Anders Jerkstrand +26
We present and discuss the optical spectro-photometric observations of the nearby (z=0.087) Type I superluminous supernova (SLSN I) SN 2017gci, whose peak K-corrected absolute magn…
Accretion disc cooling and narrow absorption lines in the tidal disruption event AT 2019dsg
G. Cannizzaro, T. Wevers, P. G. Jonker +23
We present the results of a large multi-wavelength follow-up campaign of the Tidal Disruption Event (TDE) \dsg, focusing on low to high resolution optical spectroscopy, X-ray, and…
SN 2019muj -- a well-observed Type Iax supernova that bridges the luminosity gap of the class
Barnabás Barna, Tamás Szalai, Saurabh W. Jha +38
We present early-time ( days) observations of SN 2019muj (= ASASSN-19tr), one of the best-observed members of the peculiar SN Iax class. Ultraviolet and optical photometri…
FLEET: A Redshift-Agnostic Machine Learning Pipeline to Rapidly Identify Hydrogen-Poor Superluminous Supernovae
Sebastian Gomez, Edo Berger, Peter K. Blanchard +4
Over the past decade wide-field optical time-domain surveys have increased the discovery rate of transients to the point that are being spectroscopically classified…
SN 2017ivv: two years of evolution of a transitional Type II supernova
C. P. Gutiérrez, A. Pastorello, A. Jerkstrand +39
We present the photometric and spectroscopic evolution of the Type II supernova (SN II) SN 2017ivv (also known as ASASSN-17qp). Located in an extremely faint galaxy (M ma…
The Broad-band Counterpart of the Short GRB 200522A at : A Luminous Kilonova or a Collimated Outflow with a Reverse Shock?
W. Fong, T. Laskar, J. Rastinejad +20
We present the discovery of the radio afterglow and near-infrared (NIR) counterpart of the Swift short GRB 200522A, located at a small projected offset of kpc from the…
The distant, galaxy cluster environment of the short GRB 161104A at and a comparison to the short GRB host population
Anya E. Nugent, Wen-fai Fong, Yuxin Dong +9
We present optical observations of the Swift short-duration gamma-ray burst (GRB) GRB 161104A and its host galaxy at . We model the multiband photometry and spec…
SN 2019ehk: A Double-Peaked Ca-rich Transient with Luminous X-ray Emission and Shock-Ionized Spectral Features
Wynn V. Jacobson-Galán, Raffaella Margutti, Charles D. Kilpatrick +64
We present panchromatic observations and modeling of the Calcium-rich supernova 2019ehk in the star-forming galaxy M100 (d16.2 Mpc) starting 10 hours after explosion and c…
The low-luminosity type II SN\,2016aqf: A well-monitored spectral evolution of the Ni/Fe abundance ratio
Tomás E. Müller-Bravo, Claudia P. Gutiérrez, Mark Sullivan +20
Low-luminosity type II supernovae (LL SNe~II) make up the low explosion energy end of core-collapse SNe, but their study and physical understanding remain limited. We present SN\,2…
PS15cey and PS17cke: prospective candidates from the Pan-STARRS Search for Kilonovae
Owen R. McBrien, Stephen J. Smartt, Mark E. Huber +22
Time domain astronomy was revolutionised with the discovery of the first kilonova, AT2017gfo, in August 2017 which was associated with the gravitational wave signal GW170817. Since…
An outflow powers the optical rise of the nearby, fast-evolving tidal disruption event AT2019qiz
M. Nicholl, T. Wevers, S. R. Oates +42
At 66 Mpc, AT2019qiz is the closest optical tidal disruption event (TDE) to date, with a luminosity intermediate between the bulk of the population and iPTF16fnl. Its proximity all…
An extremely energetic supernova from a very massive star in a dense medium
Matt Nicholl, Peter K. Blanchard, Edo Berger +14
The interaction of a supernova with a circumstellar medium (CSM) can dramatically increase the emitted luminosity by converting kinetic energy to thermal energy. In 'superluminous'…
The Tidal Disruption Event AT 2018hyz II: Light Curve Modeling of a Partially Disrupted Star
Sebastian Gomez, Matt Nicholl, Philip Short +18
AT 2018hyz (=ASASSN-18zj) is a tidal disruption event (TDE) located in the nucleus of a quiescent E+A galaxy at a redshift of , first detected by the All-Sky Automated…
The Pre-Explosion Mass Distribution of Hydrogen-Poor Superluminous Supernova Progenitors and New Evidence for a Mass-Spin Correlation
Peter K. Blanchard, Edo Berger, Matt Nicholl +1
Despite indications that superluminous supernovae (SLSNe) originate from massive progenitors, the lack of a uniformly analyzed statistical sample has so far prevented a detailed vi…
Observational constraints on the optical and near-infrared emission from the neutron star-black hole binary merger S190814bv
K. Ackley, L. Amati, C. Barbieri +151
On 2019 August 14, the LIGO and Virgo interferometers detected a high-significance event labelled S190814bv. Preliminary analysis of the GW data suggests that the event was likely…
DES16C3cje: A low-luminosity, long-lived supernova
C. P. Gutiérrez, M. Sullivan, L. Martinez +89
We present DES16C3cje, a low-luminosity, long-lived type II supernova (SN II) at redshift 0.0618, detected by the Dark Energy Survey (DES). DES16C3cje is a unique SN. The spectra a…