Suzaku Observations of SN 1987A

Details Suzaku Observations of SN 1987A Suzaku Observations of SN 1987A

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009pasj...61..895s&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.61, No.4, pp.895--899

Astronomy and Astrophysics

Astronomy

3

Ism: Supernova Remnants, Stars: Supernovae: Individual (Sn1987A), X-Rays: General, X-Rays: Individual (Sn1987A)

Scientific paper

We report on Suzaku observations of SN1987A in the Large Magellanic Cloud, performed in 2005 November and 2006 June. The observations provide medium resolution X-ray spectra during the phase of the interaction between the supernova blast wave and the inner circumstellar ring. The Suzaku observations complement XMM-Newton and Chandra observations and were used to investigate the spectral evolution of SN1987A. The spectra were analyzed with two-temperature emission model from shocked gas. For the flux in the soft band (0.5--2.0keV) we obtained 25.7-1.9+1.4 × 10-13 erg cm-2 (2005) and 30.8-1.7+1.4 × 10-13erg cm-2 (2006). The exponential rise seen in the soft X-ray light curve of SN1987A till ˜6500d after the explosion slowed down significantly between the Suzaku observations. Recent Chandra and XMM-Newton observations confirm this evolution. SN1987A continues to brighten exponentially, but with longer characteristic timescale. This must be caused by a less rapidly increasing emission measure.

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