Title :
Distance measurements to radio supernova remnants
Author :
Tian, Wenwu ; Leahy, Denis
Author_Institution :
Nat. Astron. Obs., CAS, Beijing
Abstract :
We briefly review methods to measure the distances to Galactic radio supernova remnants (SNRs) and objects associated (pulsars and H II regions). We highlight new methods we have developed by giving results from H I and 13CO line spectra of some SNRs. The methods advance traditional methods of H I-absorption-determined-distance to an SNR due to improving background subtraction and spurious emission rejection, and resolving the near/far distance ambiguity in the inner Galaxy. New distances to several SNRs, i.e. W41, G21.5-0.9, G54.1+0.3, Kes 67, Kes 69, Kes 73 and Kes 75, have been determined.
Keywords :
H II regions; pulsars; radioastronomical techniques; radiosources (astronomical); supernova remnants; 13CO line spectrum; G 21.5-0.9; G 54.1+0.3; Galactic radio supernova remnants; H I line spectrum; H I-absorption-determined-distance; H II regions; Kes 67; Kes 69; Kes 73; Kes 75; W41; associated pulsars; Absorption; Brightness temperature; Clouds; Delta modulation; Distance measurement; Electrons; Extraterrestrial measurements; Kinematics; Physics; Space technology;
Conference_Titel :
Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting, 2009. ANTEM/URSI 2009. 13th International Symposium on
Conference_Location :
Banff, AB
Print_ISBN :
978-1-4244-2979-0
Electronic_ISBN :
978-1-4244-2980-6
DOI :
10.1109/ANTEMURSI.2009.4805122
