Published July 1, 2009 | Version v1
Journal article Metadata-only

Brightness temperature for 166 radio sources

Creators

  • 1. Center for Astrophysics, Guangzhou University, Guangzhou 510006 (China)
  • 2. Center for Astrophysics, University of Science and Technology of China, Hefei 230026 (China)
  • 3. Department of Physics and Electronics Science, Hunan University of Arts and Science, Changde 415000 (China)
  • 4. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030 (China)

Description

Using the database of the University of Michigan Radio Astronomy Observatory (UMRAO) at three radio frequencies (4.8, 8 and 14.5 GHz), we determined the short-term variability timescales for 166 radio sources. The timescales are 0.15 d (2007+777) to 176.17 d (0528-250) with an average timescale of Δtobs = 17.1 ± 16.5 d for the whole sample. The timescales are used to calculate the brightness temperatures, TB. The value of log TB is in the range of log TB = 10.47 to 19.06 K. In addition, we also estimated the boosting factor for the sources. The correlation between the polarization and the Doppler factor is also discussed.

Availability note (English)

Available from http://dx.doi.org/10.1088/1674-4527/9/7/003

Additional details

Identifiers

DOI
10.1088/1674-4527/9/7/003;

Publishing Information

Journal Title
Research in Astronomy and Astrophysics
Journal Volume
9
Journal Issue
7
Journal Page Range
p. 751-760
ISSN
1674-4527

INIS

Country of Publication
China
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41046912
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
ASTRONOMY; BRIGHTNESS; CORRELATIONS; POLARIZATION; RADIOWAVE RADIATION
Descriptors DEC
ELECTROMAGNETIC RADIATION; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS