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SN2017hpa carbon-rich type Ia LCs and sp.
We present extensive, well-sampled optical and ultraviolet photometry and optical spectra of the Type Ia supernova (SN Ia) 2017hpa. The light curves indicate that SN 2017hpa is... -
Radio flux measurements of type Ib/c & II SNe
We assemble a large set of 2-10GHz radio flux density measurements and upper limits of 294 different supernovae (SNe), from the literature and our own and archival data. Only... -
Classif. for PS1-MDS SNe with SuperRAENN
Automated classification of supernovae (SNe) based on optical photometric light-curve information is essential in the upcoming era of wide-field time domain surveys, such as the... -
Classification of PS1-MDS SNe with Superphot
The classification of supernovae (SNe) and its impact on our understanding of explosion physics and progenitors have traditionally been based on the presence or absence of... -
The local universe with ZTF. I. Ca-rich gap transients
Using the Zwicky Transient Facility alert stream, we are conducting a large spectroscopic campaign to construct a complete, volume-limited sample of transients brighter than... -
Classification of SNe in SDSS-II SNe Survey
The use of SNe Ia to measure cosmological parameters has grown significantly over the past two decades. However, there exists a significant diversity in the SN Ia population... -
Optical and NIR observation of SN (Ia) 2017cbv
Supernova (SN) 2017cbv in NGC5643 is one of a handful of Type Ia supernovae (SNeIa) reported to have excess blue emission at early times. This paper presents extensive... -
Photometry AT 2018hyz with Swift XRT, UVOT and Swope
We present the multiwavelength analysis of the tidal disruption event (TDE) AT2018hyz (ASASSN-18zj). From follow-up optical spectroscopy, we detect the first unambiguous case of... -
Radio & optical observations of supernova SN2020oi
We report the discovery and panchromatic follow-up observations of the young Type Ic supernova (SNIc) SN2020oi in M100, a grand-design spiral galaxy at a mere distance of 14Mpc.... -
Optical and NIR spectra of ZTF19aawfbtg (SN2019hge)
Helium is expected to be present in the massive ejecta of some hydrogen-poor superluminous supernovae (SLSN-I). However, until now only one event has been identified with He... -
19yrs of radio and X-ray obs. of SN 2001em
We carry out a comprehensive analysis of supernova SN 2001em covering a period of 19yr since discovery. SN 2001em is the oldest supernova known to have undergone a metamorphosis... -
ZTF early obs. of type Ia SNe. II. Rise time
While it is clear that Type Ia supernovae (SNe) are the result of thermonuclear explosions in C/O white dwarfs (WDs), a great deal remains uncertain about the binary companion... -
Revised redshifts of the Pantheon supernovae Ia
Redshifts used in current cosmological supernova samples are measured using two primary techniques, one based on well-measured host galaxy spectral lines and the other based on... -
Nebular spectroscopy of type IIb SN 2016gkg
Spectral observations of the type-IIb supernova (SN) 2016gkg at 300-800 days are reported. The spectra show nebular characteristics, revealing emission from the progenitor... -
LCs of 4 superluminous SNe from the ZTF survey
We present photometry and spectroscopy of four hydrogen-poor luminous supernovae discovered during the 2-month long science commissioning and early operations of the Zwicky... -
LRS2 spectra of SN 2019neq
We present a spectroscopic analysis of the recently discovered fast-evolving Type I superluminous supernova (SLSN-I) SN 2019neq (at redshift z=0.1059). We compare it to the... -
CSP-II: sp. obs. of the 03fg-like SN Ia LSQ14fmg
The Type Ia supernova (SN Ia) LSQ14fmg exhibits exaggerated properties that may help to reveal the origin of the "super-Chandrasekhar" (or 03fg-like) group. The optical spectrum... -
Spectra of SN 2017eaw 545 & 900 days after explosion
SN 2017eaw, the tenth supernova observed in NGC6946, was a normal Type II-P supernova with an estimated 11-13M{sun} red supergiant progenitor. Here we present nebular-phase... -
UVOT, ZTF gri LCs and spectra of the SN Ia 2019yvq
Early observations of Type Ia supernovae (SNe Ia) provide essential clues for understanding the progenitor system that gave rise to the terminal thermonuclear explosion. We... -
UV to NIR obs. of SN 2019ehk
We present panchromatic observations and modeling of the Calcium-rich supernova (SN) 2019ehk in the star-forming galaxy M100 (d~16.2Mpc) starting 10hr after explosion and...
