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Uncovering a population of gravitational lens galaxies with magnified standard candle SN Zwicky
Ariel Goobar, Joel Johansson, Steve Schulze +35
Detecting gravitationally lensed supernovae is among the biggest challenges in astronomy. It involves a combination of two very rare phenomena: catching the transient signal of a s…
A Uniform Type Ia Supernova Distance Ladder with the Zwicky Transient Facility: Absolute Calibration Based on the Tip of the Red Giant Branch (TRGB) Method
Suhail Dhawan, Ariel Goobar, Joel Johansson +21
The current Cepheid-calibrated distance ladder measurement of is reported to be in tension with the values inferred from the cosmic microwave background (CMB), assuming stand…
The Zwicky Transient Facility Type Ia supernova survey: first data release and results
S. Dhawan, A. Goobar, M. Smith +17
Type Ia supernovae (SNe~Ia) in the nearby Hubble flow are excellent distance indicators in cosmology. The Zwicky Transient Facility (ZTF) has observed a large sample of supernovae…
The large-scale environment of thermonuclear and core-collapse supernovae
Eleni Tsaprazi, Jens Jasche, Ariel Goobar +11
The new generation of wide-field time-domain surveys has made it feasible to study the clustering of supernova (SN) host galaxies in the large-scale structure (LSS) for the first t…
First measurement of the Hubble parameter from bright binary black hole GW190521
Suvodip Mukherjee, Archisman Ghosh, Matthew J. Graham +6
The Zwicky Transient Facility (ZTF) reported the event "ZTF19abanrhr" as a candidate electromagnetic (EM) counterpart at a redshift to the gravitational wave (GW) emissio…
Compatibility of the Large Quasar Groups with the Concordance Cosmological Model
Gabriel E. Marinello, Roger G. Clowes, Luis E. Campusano +3
We study the compatibility of large quasar groups with the concordance cosmological model. Large Quasar Groups are very large spatial associations of quasars in the cosmic web, wit…