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(9) X-ray observation of supernova explosion
X-ray image of the supernova 1993J in the galaxy M81. A supernova
outburst, designated SN1993J, occurred on March 28, 1993, in
the nearby galaxy M81 in the constellation Ursa Majoris.
Intense X-rays from SN1993J were observed, as seen in this
ASCA image taken on April 16. SN1993J(the second brightest object
in the image)is only three arcminutes away from the center of
This was the first time that X-rays from a supernova where
detected only ten days after outburst.
March 28, 1993, in the nearby galaxy M81 in the constellation
Ursa Majoris. Intense X-rays were observed on April 16 1993,
at a position three minutes away from the center of M81 and only
one minute away from the nearby X-ray binary X-6. X-rays from
the supernova were detected only ten days after outburst.
X-ray intensity decreased monotonically and became almost
invisible on Octorber 21, 1994, as seen on the right panel of
the ASCA image.
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ISAS/JAXA Department of High Energy Astrophysics
Last Modified: Wednesday, 21-Nov-2001 13:09:38 JST