NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Swift X-Ray Upper Limits on Type Ia Supernova EnvironmentsWe 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.
Document ID
20120015642
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Russell, B. R.
(Maryland Univ. College Park, MD, United States)
Immler, S.
(Maryland Univ. College Park, MD, United States)
Date Acquired
August 26, 2013
Publication Date
April 1, 2012
Publication Information
Publication: Astrophysical Journal Letters
Publisher: American Astronomical Society
Volume: 748
Issue: 2
Subject Category
Astronomy
Report/Patent Number
GSFC.JA.7073.2012
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available