Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.314..720f&link_type=abstract
Nature (ISSN 0028-0836), vol. 314, April 25, 1985, p. 720, 721.
Astronomy and Astrophysics
Astronomy
20
Binary Stars, Galactic Radio Waves, Nonthermal Radiation, Radio Sources (Astronomy), Astronomical Maps, Electron Acceleration, Filaments, Radio Spectra, Synchrotron Radiation
Scientific paper
A new nonthermal galactic object (G18.95-1.1) detected in the recently published 2.695 GHz galactic plane survey is claimed as a possible candidate for Helfand and Becker's (1985) proposed new class of nonthermal radio sources that originate in accreting binary systems containing a neutron star or a black hole. That the integrated flux density spectral index equals -0.4 and the polarization is roughly 2.5 percent at 4.75 GHz proves the nonthermal nature of the new source; morphologically, a classification of this object as a SNR seems impossible. G18.95-1.1 consists of various arcs all pointing toward a central radio peak; it is suggested that the object is a binary system containing a compact component, located at or close to this radio peak, accelerating electrons to relativistic energies. These energies are observed in the arcs by synchrotron emission of the accelerating electrons.
Fuerst Ernst
Handa Toshihiro
Reich Patricia
Reich Wolfgang
Sofue Yoshiaki
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