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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20191126T123000
DTEND;TZID=Atlantic/Canary:20191126T133000
UID:iactalks-1358
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1358
CREATED:2019-11-26T12:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The "Vanishing and Appearing Sources during a Century of Observatio
 ns" (VASCO) project: a status update
DESCRIPTION:The "Vanishing and Appearing Sources during a Century of Observ
 ations" (VASCO) project: a status update\nDr. Beatriz Villaroel\n\nTraditi
 onal Searches for Extraterrestrial Intelligence (SETI) use large radio tel
 escopes to look for artificial signals from specific stars. In the era of 
 large astronomical surveys, it is now possible to efficiently search for o
 bjects having certain predicted signatures of astro-engineering. In this t
 alk, I present an international, cross-disciplinary project between astron
 omers and researchers in machine learning, the "Vanishing and Appearing So
 urces during a Century of Observations" (VASCO) project, where we scan the
  sky for objects that have physically disappeared from (or appeared on) th
 e sky during the last decades. Some of the contaminants we expect are vari
 able astrophysical objects with decade-long time scales. We compare the US
 NO to PanStarrs catalogues using several epochs of observations. Here, I p
 resent the updates about the candidate from the pilot paper (Villarroel+ 2
 016) and the discovery of ~100 transients (~1/3rd with amplitudes larger t
 han 5 mags). The final goal of the project is to identify interesting astr
 ophysical targets for follow-up analysis with extreme, exotic or bizarre p
 atterns of variability.
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