246 citations · 3.3k across the 64 of their papers we have counts for
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Near-IR Type Ia SN distances: host galaxy extinction and mass-step corrections revisited
J. Johansson, S. B. Cenko, O. D. Fox +17
We present optical and near-infrared (NIR, -band) observations of 42 Type Ia supernovae (SNe Ia) discovered by the untargeted intermediate Palomar Transient Factory (iPTF) sur…
Two c's in a pod: Cosmology independent measurement of the Type Ia supernova colour-luminosity relation with a sibling pair
Rahul Biswas, Ariel Goobar, Suhail Dhawan +19
Using Zwicky Transient Facility (ZTF) observations, we identify a pair of "sibling" Type Ia supernovae (SNe Ia), i.e., hosted by the same galaxy at z = 0.0541. They exploded within…
The Palomar Transient Factory Core-Collapse Supernova Host-Galaxy Sample. I. Host-Galaxy Distribution Functions and Environment-Dependence of CCSNe
Steve Schulze, Ofer Yaron, Jesper Sollerman +51
Several thousand core-collapse supernovae (CCSNe) of different flavors have been discovered so far. However, identifying their progenitors has remained an outstanding open question…
Spectroscopy of the first resolved strongly lensed Type Ia supernova iPTF16geu
J. Johansson, A. Goobar, S. H. Price +14
We report the results from spectroscopic observations of the multiple images of the strongly lensed Type Ia supernova (SN Ia), iPTF16geu, obtained with ground based telescopes and…
Magnification, dust and time-delay constraints from the first resolved strongly lensed Type Ia supernova
S. Dhawan, J. Johansson, A. Goobar +14
We report lensing magnifications, extinction, and time-delay estimates for the first resolved, multiply-imaged Type Ia supernova iPTF16geu, at , using $Hubble\,Space\,Te…
High-redshift supernova rates measured with the gravitational telescope A1689
Tanja Petrushevska, Rahman Amanullah, Ariel Goobar +12
We present a ground-based near-infrared search for lensed supernovae behind the massive cluster Abell 1689 at z=0.18, one of the most powerful gravitational telescopes that nature…
The rise of SN2014J in the nearby galaxy M82
A. Goobar, J. Johansson, R. Amanullah +31
We report on the discovery of SN2014J in the nearby galaxy M82. Given its proximity, it offers the best opportunity to date to study a thermonuclear supernova over a wide range of…