SEARCH FOR A COMPACT SCINTILLATING COMPONENT IN SNR 3С58 AT DECAMETER WAVELENGTHS

Abstract

The upper limit for the flux of a compact source of continuum radio emission in SNR 3C58, (2.7 ± 0.9) Jy, was obtained by the highest sensitive observations of interplanetary scintillations at decameter wavelengths. As the sensitivity of observations allows detecting the flux which could be expected at decameter wavelengths for the spectral index α ≈ 2.8 (as at frequencies above 100 MHz) the non-detection of compact source emission is explained by the less value of spectral index at low frequencies (the presence of the cut-off in radio emission spectrum).

Keywords

• supernova remnant
• star remnant
• interplanetary scintillation
• decameter wavelength range