The remnant of supernova 1987A resolved at 3-mm wavelength
نویسندگان
چکیده
منابع مشابه
The Remnant of Supernova 1987A
Although it has faded by a factor of ∼107, SN 1987A is still bright enough to be observed in almost every band of the electromagnetic spectrum. Today, the bolometric luminosity of the debris is dominated by a far-infrared (∼200 μm) continuum from ∼0.5 M of dust grains in the interior debris. The dust is heated by UV, optical, and near-infrared (NIR) emission resulting from radioactive energy de...
متن کاملThe X-ray Spectrum of Supernova Remnant 1987A
We discuss the X-ray emission observed from Supernova Remnant 1987A with the Chandra X-ray Observatory. We analyze a high resolution spectrum obtained in 1999 October with the high energy transmission grating (HETG). From this spectrum we measure the strengths and an average profile of the observed X-ray lines. We also analyze a high signal-to-noise ratio CCD spectrum obtained in 2000 December....
متن کاملEvolution and Geometry of Hot Spots in Supernova Remnant 1987A
We present ground-based near-infrared imaging and HST optical imaging and spectroscopy of the interaction between the ejecta of SN 1987A and its equatorial circumstellar ring. This interaction has made a transition, from emission originating in just a few “hot spots” at restricted locations in position angle around the ring, to a collision producing optical emission over a nearly continuous dis...
متن کاملChandra Observations of Shock Kinematics in Supernova Remnant 1987a
We report the first results from deep X-ray observations of the supernova remnant SNR 1987A with the Chandra LETG. Temperatures inferred from line ratios range from ∼0.1 to 2 keV and increase with ionization potential. Expansion velocities inferred from X-ray line profiles range from ∼300 to 1700 km s , much less than the velocities inferred from the radial expansion of the radio and X-ray imag...
متن کاملSupernova 1987A
First, I summarize the main points that we have learned about the interior of SN1987A. Then, I describe in greater detail the rapidly developing impact of SN1987A with its inner circumstellar ring.
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2012
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201218902