Distance measurements to radio supernova remnants

Author

Tian, Wenwu ; Leahy, Denis

Author_Institution

Nat. Astron. Obs., CAS, Beijing

fYear

2009

fDate

15-18 Feb. 2009

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ANTEMURSI.2009.4805122

Filename

4805122