Statistics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.4005h&link_type=abstract
American Astronomical Society Meeting 203, #40.05; Bulletin of the American Astronomical Society, Vol. 35, p.1268
Statistics
2
Scientific paper
The Low-Frequency Array (LOFAR) will conduct observations from 10 to 240 MHz, with arcsecond angular resolution. However, there are currently no models of the statistical distribution of source sizes and flux densities at these low frequencies and high resolutions. Such a model is needed for the refinement of LOFAR calibration algorithms and strategies, and for the development of calibration software. To build such a model, a wide-field image centered on the extragalactic radio source 3C249.1 was created at 328 MHz from VLA A-array observations of the source, with an approximate 3.5 degree field of view. A source catalog was compiled from the image with identification by eye and subsequent use of routines in the AIPS environment to extract source properties. The resolution and sensitivity of this image represents the current state-of-the-art, and such data are the closest available match to the relevant properties of the LOFAR calibrator source population. The data were fitted for various statistics, and empirical models, based partly on VLA 74 MHz images, were used to extrapolate those statistics to LOFAR frequencies. The information is used by a sky simulator, which takes output frequency, the distribution of spectral indices, and field of view size as independent variables, and generates random skies for analysis by LOFAR simulation software.
Doeleman Sheperd S.
Hopkins Philip F.
Lonsdale Colin J.
No associations
LandOfFree
Statistical Modeling of Low-Frequency Source Properties for LOFAR Calibration 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 Statistical Modeling of Low-Frequency Source Properties for LOFAR Calibration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statistical Modeling of Low-Frequency Source Properties for LOFAR Calibration will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1419324