Conveners
SN 1987A, cont'd: S. Park, "X-ray emission from SN 1987A"
- There are no conveners in this block
SN 1987A, cont'd: S. Ng, "Supernova 1987A in Radio"
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SN 1987A, cont'd: K. Kjaer, "The structure of the inner ejecta of SN 1987A"
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SN 1987A, cont'd: J. Larsson, "X-ray illumination of the ejecta of SN1987A"
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SN 1987A, cont'd: K. France, "Hydrogen, Helium, Carbon, and Nitrogen Emission from the SN 1987A Reverse Shock"
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SN 1987A, cont'd: A. Jerkstrand, "Spectroscopic modeling of SN 1987A and other Type II SNe"
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SN 1987A, cont'd: M. Matsuura,"Herschel Detects a Massive Dust Reservoir in Supernova 1987A"
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SN 1987A, cont'd
- Alicia M. Soderberg (CfA, Harvard)
Prof.
Sangwook Park
(University of Texas at Arlington)
12/08/2011, 13:00
SN 1987A has been monitored by several X-ray missions such as Chandra,
XMM-Newton, ROSAT, Suzaku, and Swift. Now in the phase of young supernova
remnant (SNR), X-ray emission from 1987A is dominated by radiation
from the shock interacting with dense circumstellar medium. The most extensive
X-ray study of SNR 1987A has been performed by Chandra observations for the
last 12 years. We...
Dr
Stephen C.-Y. Ng
(McGill University)
12/08/2011, 13:25
Being the brightest supernova since the invention of modern telescopes, SN 1987A has
been intensively studied over the last two decades and it exhibited a highly unusual
evolution. At radio frequencies, the initial outburst peaked on day 4 then followed
by a rapid decay. The radio emission re-emerged around mid-1990, marking the birth of
a radio remnant. Monitoring observations with the...
Dr
Karina Kjaer
(Queen's University Belfast)
12/08/2011, 13:50
Observing the inner ejecta of a supernova is possible only in a handful of nearby
supernova remnants. SN 1987A is the first modern stellar explosion that has been
continuously observed from its beginning to the supernova remnant phase. Twenty years
after the explosion, we are now able to observe the three-dimensional spatially
resolved inner ejecta of this supernova.
We have used...
Josefin Larsson
(Stockholm University & Oskar Klein Centre)
12/08/2011, 14:15
I will present the light curve of the ejecta of SN 1987A
measured from HST
observations spanning the past 17 years. The light curve
shows that the flux declined
up to around year 2001, but then started to increase,
reaching a level more than twice
as high in 2010. The declining phase is well modelled by
radioactive decay of 44Ti, but a
new energy source is needed to explain the...
Dr
Kevin France
(University of Colorado)
12/08/2011, 15:10
In this talk, I will present the most sensitive ultraviolet observations of Supernova
1987A to date. Imaging spectroscopy from the HST-Cosmic Origins Spectrograph show
many narrow (FWHM ∼ 300 km/s) emission lines from the circumstellar ring, broad (FWHM
~ 10000-20000 km/s) emission lines from the reverse shock, and ultraviolet continuum
emission. The high signal-to-noise (> 40 per...
Mr
Anders Jerkstrand
(Stockholm University)
12/08/2011, 15:35
Core-collapse SNe offer unique opportunities to look inside massive stars. By
calculating the deposition and degradation of gamma-rays and positrons, solving the
equations for statistical and thermal equilibrium, and considering the effects of multi-
line radiative transfer, we produce model spectra that can be compared with
observations. We apply our model to interpret the spectrum of...
Dr
Mikako Matsuura
(University College London)
12/08/2011, 16:00
We report a surprising detection of the supernova 1987A at far-infrared and
submillimetre (submm) wavelengths in 2010. As a part of the Herschel Large and
Small Magellanic Cloud surveys (HERITAGE; principal investigator Margaret Meixner),
the Herschel Space Observatory scanned the sky in the direction of SN 1987A, and
found a faint but clear point source. The source was detected at...