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Recent X-Ray Observations of SN1986J with ASCA and ROSAT | John C. Houck
; Joel N. Bregman
; Roger A. Chevalier
; Kohji Tomisaka
; | Date: |
28 Mar 1997 | Subject: | astro-ph | Affiliation: | 1 and 2), Joel N. Bregman , Roger A. Chevalier , Kohji Tomisaka ( University of Michigan MIT University of Virginia Niigata University | Abstract: | We present ASCA and ROSAT observations of SN 1986J covering the period 1991 August to 1996 January. From observations with the ROSAT HRI and PSPC, we find that the 0.5-2.5 keV flux decreased proportional to $t^{-2}$ during this period; the ASCA data are consistent with this result and extend it to the 2-10 keV band. ASCA spectra from 1994 January and 1996 January are consistent with thermal emission from a solar metallicity plasma at an equilibrium temperature kT = 5-7.5 keV, somewhat hotter than that observed from other X-ray supernovae. These spectra also show a clear Fe K emission line at 6.7 keV with FWHM < 20,000 km/s (90% confidence). This limit on the line width is consistent with the reverse shock model of Chevalier & Fransson (1994), but does not rule out the clumpy wind model of Chugai (1993). | Source: | arXiv, astro-ph/9703193 | Services: | Forum | Review | PDF | Favorites |
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