Search for compact galactic radio sources. II. Scintillating source in supernova remnants

A search for compact (scintillating) 102-MHz sources in the directions toward 60 nebular SNRs has been carried out with the Pushchino fan-beam antenna of the Lebedev Physics Institute. Compact sources have been detected toward W50, HB 9, VRO 42.05.01, and apparently 3C 58; in the first two SNRs their angular size is < or =0''.1, and in the others < or = 1''. The compact source toward W50 is identifiable with the peculiar object SS 433. Analysis of a composite (13--611 MHz) spectrum for the Crab Nebula neutron star derived from 12 yr of measurement shows that its radio spectrum (α = -2.9 +- 0.3) and flux density (45 Jy at 100 MHz) display no regular annual variations in excess of 5% and 3%, respectively. The identification of all the sources is considered, their radio spectra and angular sizes are analyzed, and their nature is discussed