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The Astronomical Low-Frequency Array (ALFA)

Published online by Cambridge University Press:  12 April 2016

D. L. Jones ,
K. W. Weiler ,
R. J. Allen ,
M. M. Desch ,
W. C. Erickson ,
M. L. Kaiser ,
N. E. Kassim ,
T. B. H. Kuiper ,
M. J. Mahoney  and
K. A. Marsh
...Show all authors
D. L. Jones
Affiliation:
Jet Propulsion Laboratory, Caltech, Pasadena, CA, USA
K. W. Weiler
Affiliation:
Naval Research Laboratory, Washington, D.C., USA
R. J. Allen
Affiliation:
Space Telescope Science Institute, Baltimore, MD, USA
M. M. Desch
Affiliation:
Goddard Space Flight Center, Greenbelt, MD, USA
W. C. Erickson
Affiliation:
Univ. of Tasmania, Australiaand, Univ. of Maryland, Greenbelt, MD, USA
M. L. Kaiser
Affiliation:
Goddard Space Flight Center, Greenbelt, MD, USA
N. E. Kassim
Affiliation:
Naval Research Laboratory, Washington, D.C., USA
T. B. H. Kuiper
Affiliation:
Jet Propulsion Laboratory, Caltech, Pasadena, CA, USA
M. J. Mahoney
Affiliation:
Jet Propulsion Laboratory, Caltech, Pasadena, CA, USA
K. A. Marsh
Affiliation:
Jet Propulsion Laboratory, Caltech, Pasadena, CA, USA
R. A. Perley
Affiliation:
National Radio Astronomy Observatory, Socorro, NM, USA
R. A. Preston
Affiliation:
Jet Propulsion Laboratory, Caltech, Pasadena, CA, USA
R. G. Stone
Affiliation:
Goddard Space Flight Center, Greenbelt, MD, USA

Abstract

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The ALFA mission is designed to map the entire sky at frequencies between approximately 0.3 and 30 MHz with angular resolution limited by interstellar and interplanetary scattering. Most of this region of the spectrum is inaccessible from the ground because of absorption and refraction by the Earth’s ionosphere. A wide range of astrophysical questions concerning solar system, galactic, and extragalactic objects could be answered with high resolution images at low frequencies, where absorption effects and coherent emission processes become important and the synchrotron lifetimes of electrons are comparable to the age of the universe.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 164: Radio Emission from Galactic and Extragalactic Compact Sources , 1998 , pp. 393 - 394
Copyright
Copyright © Astronomical Society of the Pacific 1998