Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...431l..35v&link_type=abstract
The Astrophysical Journal, Part 2 - Letters, vol. 431, no. 1, p. L35-L38
Astronomy and Astrophysics
Astronomy
80
Gamma Ray Bursts, Radio Emission, Radio Sources (Astronomy), Supernova Remnants, Supernovae, Astronomical Catalogs, Calorimeters, Rosat Mission, Stellar Luminosity
Scientific paper
Motivated by the association of two soft gamma-ray repeaters (SGRs) with supernova remnants (SNR) we have carried out radio, optical and X-ray studies of two cataloged SNRs in the large KONUS error box 11 deg x 8 min of SGR 1900+14. Our very large array (VLA) observations of SNR G43.9+1.6 do not reveal any obvious plerionic component. A radio flat-spectrum source, close to, but outside the error box was found. We suggest this to be a distant H II region foreground to the SNR. A sensitive VLA image at meter wavelengths show that the other SNR, G42.8+0.6, is an ordinary typical SNR with a shell morphology with no peculiarities such as a plerionic component. No ROSAT source with an apparent flux greater than or approximately 10-13 ergs cm-2 s-1 is found within the two SNRs. Recently, Hurley et al. have reported a new very small error box close to G42.8+0.6. There is no radio feature within or close to the error box. However, a ROSAT source is found just outside this localization. We speculate that this is the quiescent X-ray counterpart of SGR 1900+14. We suggest that SGR 1900+14 is a neutron star that was born with high speed which has now overtaken the expanding shell of SNR G42.8+0.6. Owing to the low confining pressure, there has been no development of a synchrotron bubble which explains the absence of the radio plerion. In our picture, SGR 1900+14 is the oldest known SGR.
Frail Dale A.
Greiner Jochen
Kulkarni Sanjeev R.
Vasisht Gautam
No associations
LandOfFree
Supernova remnant candidates for the soft gamma-ray repeater 1900+14 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Supernova remnant candidates for the soft gamma-ray repeater 1900+14, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supernova remnant candidates for the soft gamma-ray repeater 1900+14 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1494586