Volume 372, Number 2, June III 2001
|Page(s)||663 - 666|
|Published online||15 June 2001|
The Galactic background radiation from 0.2 to 13.8 MHz
CNRS-URA 264, Département de Recherche Spatiale, Observatoire de Paris, 92195 Meudon, France
Corresponding author: R. Manning, firstname.lastname@example.org
Accepted: 28 March 2001
The radio frequency receivers of the WAVES instrument on the WIND spacecraft are used to determine the direction of maximum intensity of the Galactic noise background in the frequency range 0.2 to 13.8 MHz. The observations are made with dipole antennas spinning in the ecliptic plane, hence provide information on the large scale distribution of intensity. The main results are: (1) the direction of maximum brightness at the higher frequencies is close to that of the Galactic center, (2) in an intermediate range around 3-4 MHz the brightness appears isotropic, and (3) at frequencies of 3 MHz and lower the maximum brightness is at the ecliptic longitude nearest the Galactic poles. On the basis of previous observations these results are not unexpected, but this is the first time that a precise spectrum has been made over this large frequency range.
Key words: Galaxy: general / radio continuum: general; ISM / ISM: general
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.