[Astronomy seminar] Astronomy Department Seminar - February 4th Dan Perley

[Astronomy seminar announcements]

On Friday the 4th at 10:30 we have our second seminar of the year with 
Dan Perley (Liverpool John Moores University) speaking via Zoom.

*A Complete Survey of the Catastrophic Universe*

While it looks static to the naked eye, the night sky is filled with 
activity: a star explodes somewhere in the observable universe once 
every second.  The vast majority of these explosions go unheralded, but 
a new generation of synoptic optical surveys are finally enabling us to 
systematically chart the entire parameter space of these dramatic 
endpoints of stellar evolution. I will describe how we are using the 
Zwicky Transient Facility to investigate this "zoo" of cosmic 
explosions. I will first present new measurements of the rates, 
luminosity functions, and demographics of a variety of well-established 
supernova types and illustrate how these observations are providing new 
insights into the connection between the lives and deaths of their 
massive stellar progenitors.  Then, moving to the extremes of stellar 
evolution I will summarize our discoveries of the rarest and most 
energetic explosions: off-axis gamma-ray bursts, "dirty" fireballs from 
moderately-relativistic jets, direct-collapse events, and kilonovae.

We are trying something new this year with leaving the Zoom call open 
after the formal hour of the seminar is up to allow the speaker, if they 
wish, to chat informally with anyone who is interested.

Thanks

Chris and Carolina

Christopher Usher is inviting you to a scheduled Zoom meeting.

Topic: Astronomy Department Seminar - Dan Perley
Time: Feb 4, 2022 10:30 AM Stockholm

Join Zoom Meeting
https://stockholmuniversity.zoom.us/j/66820045606?pwd=em5rS2ptMWIwVXVvNkVZL002NWxwZz09 


Meeting ID: 668 2004 5606
Passcode: NSenCIPabo

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