Issue |
A&A
Volume 370, Number 2, May I 2001
|
|
---|---|---|
Page(s) | 570 - 575 | |
Section | The Sun | |
DOI | https://doi.org/10.1051/0004-6361:20010253 | |
Published online | 15 May 2001 |
Observations of the supernova remnant G54.1+0.3: X-ray spectrum and evidence for an X-ray jet
1
Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse, 85748 Garching bei München, Germany
2
Laboratory of Cosmic Ray and High Energy Astrophysics, Institute of High Energy Physics, CAS, Beijing 100039, China
Corresponding author: F. J. Lu, lufj@astrosv1.ihep.ac.cn
Received:
16
May
2000
Accepted:
15
February
2001
We present analyses of the ROSAT PSPC and the ASCA SIS and GIS observations
of the Crab-like supernova remnant (SNR) G54.1+0.3. The spectrum
is best fitted by a power law model with
a photon index of -1.9, absorbed energy
flux of 6.8 10-12 erg cm-2 s-1 in the 0.7-10 keV band, and
a column density of 17.9
cm-2.
The high absorption column
density indicates a distance close to the radius of the galaxy.
The 0.7-10.0 keV X-ray luminosity of G54.1+0.3
is 1.4 1035
erg s-1, where d10 is the
distance in 10 kpc.
With an image restoration method, we
have deconvolved the X-ray image of the remnant. There is evidence
for an X-ray jet pointing to the north-east with a length of
about 40″ measured from the center of the nebula. Its X-ray luminosity
in the 0.1-2.4 keV range is about 2.1 1034
erg s-1. The X-ray
jet is consistent with the radio extension of G54.1+0.3
to the north-east in both direction and position.
Key words: X-ray: ISM / ISM: supernova remnants / ISM: jet and outflows / ISM: individual: G54.1+0.3
© ESO, 2001
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