Statistics – Applications
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....7234o&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #7234
Statistics
Applications
Scientific paper
The LOw Frequency ARray (LOFAR) is a new generation digital aperture synthesis radio telescope covering the frequency range from 10 to 240 MHz with baselines up to 400 km. It will comprise of 13,000 individual receptors with a 32 MHz digitized radio bandwidth and will enable multi-beaming and full polarization capability. Dedicated instruments observe the Sun and the region close to it over a large range of the electromagnetic spectrum. In order to relate these remote observations to in-situ measurements by spacecraft at 1 AU, and to make reliable space weather predictions, it is essential to measure the structure and evolution of the solar wind in the inner heliosphere. Remote sensing techniques such as Interplanetary Scintillation (IPS) can be used to obtain this information. LOFAR will be able to probe the inner heliosphere with unprecedented sensitivity and resolution (both spatial and temporal). This paper highlights some of the applications of LOFAR in the solar and space weather domains where it can be especially productive and provide new and unique measurements. The ability to observe simultaneously with a very large number of beams will allow LOFAR a sufficiently dense sampling of the inner heliosphere to attempt its tomographic reconstruction. LOFAR will be able to directly image the non-thermal radiation from CMEs when they are very close to the Sun and will be able to track them to large distances into the heliosphere using the IPS technique. LOFAR could also potentially measure the magnetic fields of CMEs by measuring Faraday Rotation of background sources viewed through CMEs. We will describe the LOFAR baseline design and its specifications and illustrate the measurement capabilities relevant to solar and space weather applications. Our plans to investigate the compatibility of the LOFAR design with these applications, in collaboration with the wider community, will be outlined.
Kasper Jan
Oberoi Divya
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