Supernova Remnant 1987A: High Resolution Images and Spectrum from Chandra Observations

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dc.creatorPark, Sangwook
dc.creatorZhekov, Svetozar A.
dc.creatorBurrows, David N.
dc.creatorRacusin, Judith L.
dc.creatorMcCray, Richard
dc.creatorBorkowski, Kazimierz J.
dc.date2005-11-11
dc.date.accessioned2026-07-07T06:45:01Z
dc.date.available2026-07-07T06:45:01Z
dc.descriptionWe report on the morphological and spectral evolution of SNR 1987A from the monitoring observations with the Chandra/ACIS. As of 2005, the X-ray-bright lobes are continuously brightening and expanding all around the ring. The softening of the overall X-ray spectrum also continues. The X-ray lightcurve is particularly remarkable: i.e., the recent soft X-ray flux increase rate is significantly deviating from the model which successfully fits the earlier data, indicating even faster flux increase rate since early 2004 (day ~6200). We also report results from high resolution spectral analysis with deep Chandra/LETG observations. The high resolution X-ray line emission features unambiguously reveal that the X-ray emission of SNR 1987A is originating primarily from a "disk" along the inner ring rather than from a spherical shell. We present the ionization structures, elemental abundances, and the shock velocities of the X-ray emitting plasma.
dc.description6 pages (A4 size) including 8 figures & 1 table. To appear in the proceedings of "The X-Ray Universe 2005" conference, Sept 26-30, 2005, El Escorial, Madrid, Spain
dc.identifierhttps://arxiv.org/abs/astro-ph/0511355
dc.identifierhttp://arxiv.org/abs/astro-ph/0511355
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/102946
dc.subjectAstrophysics
dc.titleSupernova Remnant 1987A: High Resolution Images and Spectrum from Chandra Observations
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