February 14, 2018, 3:30 p.m.
**** Building 3, Goett
GODDARD SPACE FLIGHT
"The Supernova of the
Century: SN 1987A at 31 years"
Supernova 1987A in the Large
Magellanic Cloud is one of the most intensively studied objects
in the universe and a landmark event of modern astronomy. A
wealth of observations across the electromagnetic spectrum have
confirmed longstanding theories, trashed some others, and
stimulated new techniques of modeling and studying supernovae
and other transient phenomena. Now approaching its 31st
anniversary, SN 1987A is a young supernova remnant, a phase
unobserved in any other supernova. In this talk I will summarize
recent observations from gamma rays to the radio made with many
space- and ground-based facilities. These data reveal new
insights into the composition, geometry, and heating of the
explosion ejecta, newly formed dust in the center of the debris,
the ejecta's collision with circumstellar material, and the
search for the compact object formed on February 23, 1987.
About the Speaker:
George Sonneborn earned a Ph.D. in astronomy at the Ohio State
University in 1980. He came to GSFC in 1982 as a Resident
Astronomer with the International Ultraviolet Explorer. He
started the IUE observing program for SN 1987A the day it was
discovered, and has been studying SN 1987A ever since. He was
the Project Scientist for the Far Ultraviolet Spectroscopic
Explorer (1988-2008) and is currently the Project Scientist for
Operations for the James Webb Space Telescope.
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