Spectral Index of the Diffuse Radio Background Measured From 100 to 200 MHz

Details Spectral Index of the Diffuse Radio Background Measured From 100 to 200 MHz Spectral Index of the Diffuse Radio Background Measured From 100 to 200 MHz

2008-06-17

arxiv.org/abs/0806.2868v1

Astronomy and Astrophysics

Astrophysics

8 pages including 7 figures and 4 tables. Accepted by AJ

Scientific paper

10.1088/0004-6256/136/2/641

The mean absolute brightness temperature of the diffuse radio background was measured as a function of frequency in a continuous band between 100 and 200 MHz over an effective solid angle of ~pi str at high Galactic latitude. A spectral brightness temperature index of beta = 2.5 +/- 0.1 (alpha_s = 0.5) was derived from the observations, where the error limits are 3-sigma and include estimates of the instrumental systematics. Zenith drift scans with central declinations of -26.5 degrees and spanning right ascensions 0 to 10 hours yielded little variation in the mean spectral index. The mean absolute brightness temperature at 150 MHz was found to reach a minimum of T = 237 +/- 10 K at a right ascension of 2.5 hours. Combining these measurements with those of Haslam et al. 1982 yields a spectral index of beta = 2.52 +/- 0.04 between 150 and 408 MHz.

Affiliated with

Also associated with

No associations

Rating

Spectral Index of the Diffuse Radio Background Measured From 100 to 200 MHz does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spectral Index of the Diffuse Radio Background Measured From 100 to 200 MHz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral Index of the Diffuse Radio Background Measured From 100 to 200 MHz will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-271823