Solar Imaging Radio Array (SIRA): Radio Aperture Synthesis from Space

Details Solar Imaging Radio Array (SIRA): Radio Aperture Synthesis from Space Solar Imaging Radio Array (SIRA): Radio Aperture Synthesis from Space

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spd....34.2022m&link_type=abstract

American Astronomical Society, SPD meeting #34, #20.22; Bulletin of the American Astronomical Society, Vol. 35, p.848

Astronomy and Astrophysics

Astronomy

Scientific paper

SIRA, the Solar Imaging Radio Array, will be a constellation of about 16 microsats designed to image radio sources in the solar corona and heliosphere using aperture synthesis techniques. These images will permit the mapping and tracking of CME-driven shocks (type II radio bursts) and solar flare electrons (type III radio bursts) as a function of time from near the sun to 1 AU. Two dimensional imaging of the CME-driven shock front is important for determination of space weather effects of CMEs, whereas imaging of the ubiquitous type III bursts will permit the derivation of density maps in the outer corona and solar wind. This will be the first mission to image the heliosphere (and the celestial sphere) with good angular resolution at frequencies below the ionospheric cutoff ( 10 MHz). The radio images are intrinsically complementary to white-light coronograph data, such as those of SDO, and can play a valuable role in the NASA Living with a Star program.

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