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ZTF Science Vlog

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Welcome to our Science Vlog

Hear lead authors from the ZTF team present their latest scientific publications.

Supernova Siblings in the Zwicky Transient Facility Survey

Date: March, 2022

Melissa Graham from the University of Washington, Seattle has sieved through ZTF data in search of supernova siblings - two or more supernovae in the same parent galaxy. The analysis of her sample confirms known facts about these objects and yields new surpises as well.

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ZTF captures the lastest sample of the brightest supernovae

Date: March, 2022

In this vlog, PhD student Zhihao Chen presents the largest sample of superluminous supernovae. A comprehensive lightcurve analysis sheds more light on the mechanisms that fuel these super bright cosmic flares.

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How ZTF Type Ia supernova sample can advance cosmology

Date: Jan, 2022

Suhail Dhawan from Cambridge University in the UK, summarizes his latest study on how the current and growing sample of Type Ia supernovae discovered by ZTF can answer important questions in precision cosmology. Early phase sampling , large statistics with a single system and a uniformly observed all-sky Hubble flow sample offer tantalizing opportunities to improve our cosmology models.

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Discovering microlensing events with the ZTF

Date: Dec, 2021

Tony Rodriguez, a PhD student at Caltech talks about his recent work on discovering of microlensing events in the ZTF public survey data and using these discoveries to ultimately detect and study "dark objects" in the universe such as free floating planets, brown dwarfs, and elusive stellar mass black holes.

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Discovery of a stellar mass black hole candidate

Date: Nov, 2021

Originally first discovered in X-ray, black hole binaries can now be discovered directly in optical thanks to wide-field optical surveys such as the ZTF. In this science blog, Yuhan Yao, a PhD student at Caltech shares the discovery of AT2019wey, a candidate black hole binary and the follow up multiwavelength analysis.

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The faintest of them all

Date: Oct, 2021

Lead author Viraj Karambelkar (PhD student at Caltech) talks about the discovery of SN2021fcg which is the faintest supernova of Type Iax discovered to date. Why and how is this discovery helping us understand the evolution of stars?

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Tracing the cosmic web with supernovae

Date: Sept, 2021

Lead author Eleni Tsaprazi (PhD at the OKC, Sweden) talks about the potential and first result of using large supernovae surveys to explore the large-scale structure of the universe at high redshifts.

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Searching for fast transients in real time

Date: Sept, 2021

Lead author Igor Ansdreoni (UMD/NASA GSFC) and co-author Michael Coughlin (U of Minnesota) present a new pipeline for the search of fast transients in real time and discuss first results during LIGO observing run O3.

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Rapidly Evolving Extragalactic Transients in ZTF

June, 2021

Anna Ho, a Miller postdoctoral Fellow at UC Berkeley shares the three main take aways from her receint publication "The Photometric and Spectroscopic Evolution of Rapidly Evolving Extragalactic Transients in ZTF"

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Near real-time classification of Type Ia supernovae with deep learning algorithms

Date: May, 2021

In this video, lead author Christoffer Fremling (postdoctoral fellow at Caltech) presents his latest work on a deep learning system for automated classifications of Type Ia supernovae. Dubbed SNIascore, the system can classify spectra and report confirmed supernovae to the Transient Name Server almost in real time!

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