Radio spectral index variations of the SNR HB3
نویسندگان
چکیده
منابع مشابه
Radio Spectral Index Variations of the SNR HB3
We present images of the SNR HB3 at both 408 MHz and 1420 MHz from the Canadian Galactic Plane Survey mainly based on data from the Synthesis Telescope of the Dominion Radio Astrophysical Observatory. We reproduce the 100m-Effelsberg HB3 image at 2695 MHz at large scale, and find that there exists a background emission gradient across the HB3 area. Based on our analysis of background emission a...
متن کاملThe radio spectrum and magnetic field structure of SNR HB3
Context. Evidence for a spectral flattening of the supernova remnant (SNR) HB3 (G132.7+1.3) was claimed based on previously published total flux density data, and that flattening was further interpreted as the discovery of thermal bremsstrahlung emission in the shell of HB3. Aims. A spectral flattening has never been observed from any SNR before. Reliable observations of HB3 at frequencies abov...
متن کاملRadio observations and spectral index study of the SNR G 126 . 2 + 1 . 6
We present new images of the low radio surface brightness Supernova Remnant (SNR) G126.2+1.6, based on the 408 MHz and 1420 MHz continuum emission and the HI-line emission data of the Canadian Galactic Plane Survey (CGPS). We find the SNR’s flux densities at 408 MHz (9.7 ± 3.9 Jy) and 1420 MHz (6.7 ± 2.1 Jy) which have been corrected for flux densities from compact sources within the SNR. We li...
متن کاملRadio observations and spectral index study of SNR G 126 . 2 + 1 . 6
We present new images of the low radio surface brightness Supernova Remnant (SNR) G126.2+1.6, based on the 408 MHz and 1420 MHz continuum emission and the HI-line emission data of the Canadian Galactic Plane Survey (CGPS). We find the SNR’s flux densities at 408 MHz (9.7±3.9 Jy) and 1420 MHz (6.7±2.1 Jy) which have been corrected for flux densities from compact sources within the SNR. The integ...
متن کاملOn the radio spectral index of galaxies
The radio emission of a galaxy consists of thermal bremsstrahlung, synchrotron emission from discrete supernova remnants, and diffuse synchrotron emission from cosmic ray electrons spread over the galactic disk and halo. Each of these components has a different spectral index so that the total radio spectral index of a galaxy depends sensitively on their relative contribution and on the process...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2005
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20042431