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Record 1 of 5411
Swift X-Ray Upper Limits on Type Ia Supernova Environments
External Online Source: doi:10.1088/2041-8205/748/2/L29
Author and Affiliation:
Russell, B. R.(Maryland Univ., College Park, MD, United States)
Immler, S.(Maryland Univ., College Park, MD, United States)
Abstract: We have considered 53 Type Ia supernovae (SNe Ia) observed by the Swift X-Ray Telescope. None of the SNe Ia are individually detected at any time or in stacked images. Using these data and assuming that the SNe Ia are a homogeneous class of objects, we have calculated upper limits to the X-ray luminosity (0.2-10 keV) and mass-loss rate of L(sub 0.2-10) < 1.7 X 10(exp 38) erg/s and M(dot) < l.l X 10(exp -6) solar M/ yr x (V(sub w))/(10 km/s), respectively. The results exclude massive or evolved stars as the companion objects in SN Ia progenitor systems, but allow the possibility of main sequence or small stars, along with double degenerate systems consisting of two white dwarfs, consistent with results obtained at other wavelengths (e.g., UV, radio) in other studies.
Publication Date: Apr 01, 2012
Document ID:
(Acquired Nov 14, 2012)
Subject Category: ASTRONOMY
Report/Patent Number: GSFC.JA.7073.2012
Document Type: Journal Article
Publication Information: Astrophysical Journal Letters; Volume 748; No. 2; L29
Publisher Information: American Astronomical Society, Washington, DC, United States
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Organization Source: Maryland Univ.; College Park, MD, United States
Description: 3p; In English; Original contains black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
Availability Source: Other Sources
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Last Modified: November 14, 2012
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