First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype

We present the first spectroscopic images of solar radio transients from the prototype for the Murchison Widefield Array, observed on 2010 March 27. Our observations span the instantaneous frequency band 170.9– 201.6 MHz. Though our observing period is characterized as a period of “low” to “medium”...

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Main Authors:	Oberoi, D., Matthews, L., Cairns, I., Emrich, David, Lobzin, V., Lonsdale, C., Morgan, E., Prabu, T., Vedantham, H., Wayth, Randall, Williams, A., Williams, C., White, S., Allen, G., Arcus, Wayne, Barnes, D., Benkevitch, L., Bernardi, G., Bowman, J., Briggs, F., Bunton, J., Burns, S., Cappallo, R., Clark, M., Corey, B., Dawson, M., DeBoer, D., De Gans, A., DeSouza, L., Derome, M., Edgar, R., Elton, T., Goeke, R., Gopalakrishna, M., Greenhill, L., Hazelton, B., Herne, David, Hewitt, J., Kamini, P., Kaplan, D., Kasper, J., Kennedy, R., Kincaid, B., Kocz, J., Koeing, R., Kowald, E., Lynch, Mervyn, Madhavi, S., McWhirter, S., Mitchell, D., Morales, M., Ng, A., Ord, Stephen, Pathikulangara, J., Rogers, A., Roshi, A., Salah, J., Sault, R., Schinckel, A., Udaya Shankar, N., Srivani, K., Stevens, J., Subrahmanyan, R., Thakkar, D., Tingay, Steven, Tuthill, J., Vaccarella, A., Waterson, Mark, Webster, R., Whitney, A.
Format:	Journal Article
Published:	Institute of Physics Publishing Ltd. 2011
Online Access:	http://hdl.handle.net/20.500.11937/49195

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author	Oberoi, D. Matthews, L. Cairns, I. Emrich, David Lobzin, V. Lonsdale, C. Morgan, E. Prabu, T. Vedantham, H. Wayth, Randall Williams, A. Williams, C. White, S. Allen, G. Arcus, Wayne Barnes, D. Benkevitch, L. Bernardi, G. Bowman, J. Briggs, F. Bunton, J. Burns, S. Cappallo, R. Clark, M. Corey, B. Dawson, M. DeBoer, D. De Gans, A. DeSouza, L. Derome, M. Edgar, R. Elton, T. Goeke, R. Gopalakrishna, M. Greenhill, L. Hazelton, B. Herne, David Hewitt, J. Kamini, P. Kaplan, D. Kasper, J. Kennedy, R. Kincaid, B. Kocz, J. Koeing, R. Kowald, E. Lynch, Mervyn Madhavi, S. McWhirter, S. Mitchell, D. Morales, M. Ng, A. Ord, Stephen Pathikulangara, J. Rogers, A. Roshi, A. Salah, J. Sault, R. Schinckel, A. Udaya Shankar, N. Srivani, K. Stevens, J. Subrahmanyan, R. Thakkar, D. Tingay, Steven Tuthill, J. Vaccarella, A. Waterson, Mark Webster, R. Whitney, A.
author_facet	Oberoi, D. Matthews, L. Cairns, I. Emrich, David Lobzin, V. Lonsdale, C. Morgan, E. Prabu, T. Vedantham, H. Wayth, Randall Williams, A. Williams, C. White, S. Allen, G. Arcus, Wayne Barnes, D. Benkevitch, L. Bernardi, G. Bowman, J. Briggs, F. Bunton, J. Burns, S. Cappallo, R. Clark, M. Corey, B. Dawson, M. DeBoer, D. De Gans, A. DeSouza, L. Derome, M. Edgar, R. Elton, T. Goeke, R. Gopalakrishna, M. Greenhill, L. Hazelton, B. Herne, David Hewitt, J. Kamini, P. Kaplan, D. Kasper, J. Kennedy, R. Kincaid, B. Kocz, J. Koeing, R. Kowald, E. Lynch, Mervyn Madhavi, S. McWhirter, S. Mitchell, D. Morales, M. Ng, A. Ord, Stephen Pathikulangara, J. Rogers, A. Roshi, A. Salah, J. Sault, R. Schinckel, A. Udaya Shankar, N. Srivani, K. Stevens, J. Subrahmanyan, R. Thakkar, D. Tingay, Steven Tuthill, J. Vaccarella, A. Waterson, Mark Webster, R. Whitney, A.
author_sort	Oberoi, D.
building	Curtin Institutional Repository
collection	Online Access
description	We present the first spectroscopic images of solar radio transients from the prototype for the Murchison Widefield Array, observed on 2010 March 27. Our observations span the instantaneous frequency band 170.9– 201.6 MHz. Though our observing period is characterized as a period of “low” to “medium” activity, one broadband emission feature and numerous short-lived, narrowband, non-thermal emission features are evident. Our data represent a significant advance in low radio frequency solar imaging, enabling us to follow the spatial, spectral, and temporal evolution of events simultaneously and in unprecedented detail. The rich variety of features seen here reaffirms the coronal diagnostic capability of low radio frequency emission and provides an early glimpse of the nature of radio observations that will become available as the next generation of low-frequency radio interferometers come online over the next few years.
first_indexed	2025-11-14T09:39:58Z
format	Journal Article
id	curtin-20.500.11937-49195
institution	Curtin University Malaysia
institution_category	Local University
last_indexed	2025-11-14T09:39:58Z
publishDate	2011
publisher	Institute of Physics Publishing Ltd.
recordtype	eprints
repository_type	Digital Repository
spelling	curtin-20.500.11937-491952017-03-31T04:22:07Z First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype Oberoi, D. Matthews, L. Cairns, I. Emrich, David Lobzin, V. Lonsdale, C. Morgan, E. Prabu, T. Vedantham, H. Wayth, Randall Williams, A. Williams, C. White, S. Allen, G. Arcus, Wayne Barnes, D. Benkevitch, L. Bernardi, G. Bowman, J. Briggs, F. Bunton, J. Burns, S. Cappallo, R. Clark, M. Corey, B. Dawson, M. DeBoer, D. De Gans, A. DeSouza, L. Derome, M. Edgar, R. Elton, T. Goeke, R. Gopalakrishna, M. Greenhill, L. Hazelton, B. Herne, David Hewitt, J. Kamini, P. Kaplan, D. Kasper, J. Kennedy, R. Kincaid, B. Kocz, J. Koeing, R. Kowald, E. Lynch, Mervyn Madhavi, S. McWhirter, S. Mitchell, D. Morales, M. Ng, A. Ord, Stephen Pathikulangara, J. Rogers, A. Roshi, A. Salah, J. Sault, R. Schinckel, A. Udaya Shankar, N. Srivani, K. Stevens, J. Subrahmanyan, R. Thakkar, D. Tingay, Steven Tuthill, J. Vaccarella, A. Waterson, Mark Webster, R. Whitney, A. We present the first spectroscopic images of solar radio transients from the prototype for the Murchison Widefield Array, observed on 2010 March 27. Our observations span the instantaneous frequency band 170.9– 201.6 MHz. Though our observing period is characterized as a period of “low” to “medium” activity, one broadband emission feature and numerous short-lived, narrowband, non-thermal emission features are evident. Our data represent a significant advance in low radio frequency solar imaging, enabling us to follow the spatial, spectral, and temporal evolution of events simultaneously and in unprecedented detail. The rich variety of features seen here reaffirms the coronal diagnostic capability of low radio frequency emission and provides an early glimpse of the nature of radio observations that will become available as the next generation of low-frequency radio interferometers come online over the next few years. 2011 Journal Article http://hdl.handle.net/20.500.11937/49195 Institute of Physics Publishing Ltd. fulltext
spellingShingle	Oberoi, D. Matthews, L. Cairns, I. Emrich, David Lobzin, V. Lonsdale, C. Morgan, E. Prabu, T. Vedantham, H. Wayth, Randall Williams, A. Williams, C. White, S. Allen, G. Arcus, Wayne Barnes, D. Benkevitch, L. Bernardi, G. Bowman, J. Briggs, F. Bunton, J. Burns, S. Cappallo, R. Clark, M. Corey, B. Dawson, M. DeBoer, D. De Gans, A. DeSouza, L. Derome, M. Edgar, R. Elton, T. Goeke, R. Gopalakrishna, M. Greenhill, L. Hazelton, B. Herne, David Hewitt, J. Kamini, P. Kaplan, D. Kasper, J. Kennedy, R. Kincaid, B. Kocz, J. Koeing, R. Kowald, E. Lynch, Mervyn Madhavi, S. McWhirter, S. Mitchell, D. Morales, M. Ng, A. Ord, Stephen Pathikulangara, J. Rogers, A. Roshi, A. Salah, J. Sault, R. Schinckel, A. Udaya Shankar, N. Srivani, K. Stevens, J. Subrahmanyan, R. Thakkar, D. Tingay, Steven Tuthill, J. Vaccarella, A. Waterson, Mark Webster, R. Whitney, A. First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype
title	First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype
title_full	First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype
title_fullStr	First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype
title_full_unstemmed	First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype
title_short	First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype
title_sort	first spectroscopic imaging observations of the sun at low radio frequencies with the murchison widefield array prototype
url	http://hdl.handle.net/20.500.11937/49195

First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype

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