X-ray observations of the supernova remnant MSH 11-54

Journal Article · Tue Apr 15 00:00:00 EST 1980 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/183229· OSTI ID:5241958

Agrawal, P C; Riegler, G R

Soft X-ray observations of the X-ray source H1122--59 in the 0.4--2 keV band made with the low-energy detector 1 of the HEAO A-2 experiment are described. Based on positional coincidence, the source is identified with the supernova remnant MSH 11-54, thus confirming the report of Share et al. (1978). The object is a bright source in the 0.4--2 keV band with an X-ray flux of approx.9 x 10/sup -11/ ergs cm/sup -2/ s/sup -1/ near the Earth. The measured source spectrum implies a plasma temperature of approx.4 x 10/sup 6/ K and X-ray luminosity in the 0.4--2 keV band of approx.10/sup 37/ ergs s/sup -1/ using a distance of 10 kpc for MSH 11-54. The X-ray observations, interpreted in terms of an adiabatic shock wave model, give a shock velocity of approx.560 km s/sup -1/ and a supernova age of approx.2300 yr, in good agreement with the age derived from the radio observations.

• Research Organization: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California
• OSTI ID: 5241958
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Vol. 237:2
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC X-RAY SOURCES
SUPERNOVA REMNANTS
X-RAY SPECTRA
COSMIC RADIO SOURCES
ENERGY SPECTRA
PLASMA
SHOCK WAVES
SOFT X RADIATION
COSMIC RAY SOURCES
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
RADIATIONS
SPECTRA
X RADIATION
640103* - Astrophysics & Cosmology- Quasi-Stellar
Radio
& X-Ray Sources- (-1987)