A New Evolutionary Phase of Supernova Remnant 1987A

Details A New Evolutionary Phase of Supernova Remnant 1987A A New Evolutionary Phase of Supernova Remnant 1987A

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21821908p&link_type=abstract

American Astronomical Society, AAS Meeting #218, #219.08; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We have been monitoring the supernova remnant (SNR) 1987A using our Chandra observations since 1999. Here we report on the latest change in the soft X-ray light curve of SNR 1987A. For the last 1.5 yr, the soft X-ray flux has been nearly constant at f_X 5.7 x 10^-12 erg cm^-2 s^-1 (L_X 3.6 x 10^36 erg s^-1). This remarkable change in the soft X-ray light curve suggests that the shock is now interacting with a ``decreasing'' density structure after interacting with an increasing density over 10 yr prior to day 8000. Possible interpretations may include an intriguing scenario that the shock is now probably propagating beyond a density peak of the inner ring. We briefly discuss some future prospects of our Chandra monitoring observations.

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