First spectroscopic imaging observations of the sun at low radio frequencies with the Murchison Widefield Array prototype

Divya Oberoi; Lynn D Matthews; Iver H Cairns; David Emrich; Vasili Lobzin; Colin J Lonsdale; Edward H Morgan; Thiagaraj Prabu; Harish Vedantham; Randall B Wayth; Andrew J Williams; Christopher L Williams; Stephen M White; Graham R Allen; Wayne Arcus; David Graeme Barnes; Leonid V Benkevitch; Gianni Bernardi; Judd D Bowman; Frank H Briggs; John D Bunton; Stephen M Burns; Roger J Cappallo; Michael A Clark; Brian E Corey; Murray I Dawson; David R DeBoer; Andre De Gans; Ludovico deSouza; Mark Derome; Richard G Edgar; Troy Elton; Robert F Goeke; M R Gopala Krishna; Lincoln J Greenhill; Bryna J Hazelton; David Edwin Herne; Jacqueline N Hewitt; P A Kamini; David L Kaplan; Justin C Kasper; Rachel Kennedy; Barton B Kincaid; Jonathon Kocz; Ronald Koenig; Errol Kowald; Mervyn John Lynch; S Madhavi; Stephen Russell McWhirter; Daniel A Mitchell; Miguel F Morales; Andrew Ng; Stephen M Ord; Joseph Pathikulangara; Alan E E Rogers; Anish Roshi; Joseph E Salah; Robert John Sault; Antony Schinckel; Natarajan Udaya-Shankar; K S Srivani; Jamie B Stevens; Ravi Subrahmanyan; Darshan Thakkar; Steven John Tingay; Tuthill John; Annino Vaccarella; Mark F Waterson; Rachel Lindsey Webster; Alan R Whitney

doi:10.1088/2041-8205/728/2/L27

First spectroscopic imaging observations of the sun at low radio frequencies with the Murchison Widefield Array prototype

Divya Oberoi, Lynn D Matthews, Iver H Cairns, David Emrich, Vasili Lobzin, Colin J Lonsdale, Edward H Morgan, Thiagaraj Prabu, Harish Vedantham, Randall B Wayth, Andrew J Williams, Christopher L Williams, Stephen M White, Graham R Allen, Wayne Arcus, David Graeme Barnes, Leonid V Benkevitch, Gianni Bernardi, Judd D Bowman, Frank H BriggsJohn D Bunton, Stephen M Burns, Roger J Cappallo, Michael A Clark, Brian E Corey, Murray I Dawson, David R DeBoer, Andre De Gans, Ludovico deSouza, Mark Derome, Richard G Edgar, Troy Elton, Robert F Goeke, M R Gopala Krishna, Lincoln J Greenhill, Bryna J Hazelton, David Edwin Herne, Jacqueline N Hewitt, P A Kamini, David L Kaplan, Justin C Kasper, Rachel Kennedy, Barton B Kincaid, Jonathon Kocz, Ronald Koenig, Errol Kowald, Mervyn John Lynch, S Madhavi, Stephen Russell McWhirter, Daniel A Mitchell, Miguel F Morales, Andrew Ng, Stephen M Ord, Joseph Pathikulangara, Alan E E Rogers, Anish Roshi, Joseph E Salah, Robert John Sault, Antony Schinckel, Natarajan Udaya-Shankar, K S Srivani, Jamie B Stevens, Ravi Subrahmanyan, Darshan Thakkar, Steven John Tingay, Tuthill John, Annino Vaccarella, Mark F Waterson, Rachel Lindsey Webster, Alan R Whitney

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Abstract

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.

Original language	English
Pages (from-to)	1 - 7
Number of pages	7
Journal	The Astrophysical Journal Letters
Volume	728
Issue number	2
DOIs	https://doi.org/10.1088/2041-8205/728/2/L27
Publication status	Published - 2011

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10.1088/2041-8205/728/2/L27

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Oberoi, D., Matthews, L. D., Cairns, I. H., Emrich, D., Lobzin, V., Lonsdale, C. J., Morgan, E. H., Prabu, T., Vedantham, H., Wayth, R. B., Williams, A. J., Williams, C. L., White, S. M., Allen, G. R., Arcus, W., Barnes, D. G., Benkevitch, L. V., Bernardi, G., Bowman, J. D., ... Whitney, A. R. (2011). First spectroscopic imaging observations of the sun at low radio frequencies with the Murchison Widefield Array prototype. The Astrophysical Journal Letters, 728(2), 1 - 7. https://doi.org/10.1088/2041-8205/728/2/L27

@article{579cdc80ede041289f36cf70b9f0ff40,

title = "First spectroscopic imaging observations of the sun at low radio frequencies with the Murchison Widefield Array prototype",

abstract = "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.",

author = "Divya Oberoi and Matthews, \{Lynn D\} and Cairns, \{Iver H\} and David Emrich and Vasili Lobzin and Lonsdale, \{Colin J\} and Morgan, \{Edward H\} and Thiagaraj Prabu and Harish Vedantham and Wayth, \{Randall B\} and Williams, \{Andrew J\} and Williams, \{Christopher L\} and White, \{Stephen M\} and Allen, \{Graham R\} and Wayne Arcus and Barnes, \{David Graeme\} and Benkevitch, \{Leonid V\} and Gianni Bernardi and Bowman, \{Judd D\} and Briggs, \{Frank H\} and Bunton, \{John D\} and Burns, \{Stephen M\} and Cappallo, \{Roger J\} and Clark, \{Michael A\} and Corey, \{Brian E\} and Dawson, \{Murray I\} and DeBoer, \{David R\} and \{De Gans\}, Andre and Ludovico deSouza and Mark Derome and Edgar, \{Richard G\} and Troy Elton and Goeke, \{Robert F\} and \{Gopala Krishna\}, \{M R\} and Greenhill, \{Lincoln J\} and Hazelton, \{Bryna J\} and Herne, \{David Edwin\} and Hewitt, \{Jacqueline N\} and Kamini, \{P A\} and Kaplan, \{David L\} and Kasper, \{Justin C\} and Rachel Kennedy and Kincaid, \{Barton B\} and Jonathon Kocz and Ronald Koenig and Errol Kowald and Lynch, \{Mervyn John\} and S Madhavi and McWhirter, \{Stephen Russell\} and Mitchell, \{Daniel A\} and Morales, \{Miguel F\} and Andrew Ng and Ord, \{Stephen M\} and Joseph Pathikulangara and Rogers, \{Alan E E\} and Anish Roshi and Salah, \{Joseph E\} and Sault, \{Robert John\} and Antony Schinckel and Natarajan Udaya-Shankar and Srivani, \{K S\} and Stevens, \{Jamie B\} and Ravi Subrahmanyan and Darshan Thakkar and Tingay, \{Steven John\} and Tuthill John and Annino Vaccarella and Waterson, \{Mark F\} and Webster, \{Rachel Lindsey\} and Whitney, \{Alan R\}",

year = "2011",

doi = "10.1088/2041-8205/728/2/L27",

language = "English",

volume = "728",

pages = "1 -- 7",

journal = "The Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "IOP Publishing",

number = "2",

}

Oberoi, D, Matthews, LD, Cairns, IH, Emrich, D, Lobzin, V, Lonsdale, CJ, Morgan, EH, Prabu, T, Vedantham, H, Wayth, RB, Williams, AJ, Williams, CL, White, SM, Allen, GR, Arcus, W, Barnes, DG, Benkevitch, LV, Bernardi, G, Bowman, JD, Briggs, FH, Bunton, JD, Burns, SM, Cappallo, RJ, Clark, MA, Corey, BE, Dawson, MI, DeBoer, DR, De Gans, A, deSouza, L, Derome, M, Edgar, RG, Elton, T, Goeke, RF, Gopala Krishna, MR, Greenhill, LJ, Hazelton, BJ, Herne, DE, Hewitt, JN, Kamini, PA, Kaplan, DL, Kasper, JC, Kennedy, R, Kincaid, BB, Kocz, J, Koenig, R, Kowald, E, Lynch, MJ, Madhavi, S, McWhirter, SR, Mitchell, DA, Morales, MF, Ng, A, Ord, SM, Pathikulangara, J, Rogers, AEE, Roshi, A, Salah, JE, Sault, RJ, Schinckel, A, Udaya-Shankar, N, Srivani, KS, Stevens, JB, Subrahmanyan, R, Thakkar, D, Tingay, SJ, John, T, Vaccarella, A, Waterson, MF, Webster, RL & Whitney, AR 2011, 'First spectroscopic imaging observations of the sun at low radio frequencies with the Murchison Widefield Array prototype', The Astrophysical Journal Letters, vol. 728, no. 2, pp. 1 - 7. https://doi.org/10.1088/2041-8205/728/2/L27

TY - JOUR

T1 - First spectroscopic imaging observations of the sun at low radio frequencies with the Murchison Widefield Array prototype

AU - Oberoi, Divya

AU - Matthews, Lynn D

AU - Cairns, Iver H

AU - Emrich, David

AU - Lobzin, Vasili

AU - Lonsdale, Colin J

AU - Morgan, Edward H

AU - Prabu, Thiagaraj

AU - Vedantham, Harish

AU - Wayth, Randall B

AU - Williams, Andrew J

AU - Williams, Christopher L

AU - White, Stephen M

AU - Allen, Graham R

AU - Arcus, Wayne

AU - Barnes, David Graeme

AU - Benkevitch, Leonid V

AU - Bernardi, Gianni

AU - Bowman, Judd D

AU - Briggs, Frank H

AU - Bunton, John D

AU - Burns, Stephen M

AU - Cappallo, Roger J

AU - Clark, Michael A

AU - Corey, Brian E

AU - Dawson, Murray I

AU - DeBoer, David R

AU - De Gans, Andre

AU - deSouza, Ludovico

AU - Derome, Mark

AU - Edgar, Richard G

AU - Elton, Troy

AU - Goeke, Robert F

AU - Gopala Krishna, M R

AU - Greenhill, Lincoln J

AU - Hazelton, Bryna J

AU - Herne, David Edwin

AU - Hewitt, Jacqueline N

AU - Kamini, P A

AU - Kaplan, David L

AU - Kasper, Justin C

AU - Kennedy, Rachel

AU - Kincaid, Barton B

AU - Kocz, Jonathon

AU - Koenig, Ronald

AU - Kowald, Errol

AU - Lynch, Mervyn John

AU - Madhavi, S

AU - McWhirter, Stephen Russell

AU - Mitchell, Daniel A

AU - Morales, Miguel F

AU - Ng, Andrew

AU - Ord, Stephen M

AU - Pathikulangara, Joseph

AU - Rogers, Alan E E

AU - Roshi, Anish

AU - Salah, Joseph E

AU - Sault, Robert John

AU - Schinckel, Antony

AU - Udaya-Shankar, Natarajan

AU - Srivani, K S

AU - Stevens, Jamie B

AU - Subrahmanyan, Ravi

AU - Thakkar, Darshan

AU - Tingay, Steven John

AU - John, Tuthill

AU - Vaccarella, Annino

AU - Waterson, Mark F

AU - Webster, Rachel Lindsey

AU - Whitney, Alan R

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

UR - http://iopscience.iop.org/2041-8205/728/2/L27/pdf/2041-8205_728_2_L27.pdf

UR - https://www.scopus.com/pages/publications/79960205376

U2 - 10.1088/2041-8205/728/2/L27

DO - 10.1088/2041-8205/728/2/L27

M3 - Article

SN - 2041-8205

VL - 728

SP - 1

EP - 7

JO - The Astrophysical Journal Letters

JF - The Astrophysical Journal Letters

IS - 2

ER -

First spectroscopic imaging observations of the sun at low radio frequencies with the Murchison Widefield Array prototype

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