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Dwarf nova-type cataclysmic variable stars are significant radio emitters

Dwarf nova-type cataclysmic variable stars are significant radio emitters
Dwarf nova-type cataclysmic variable stars are significant radio emitters
We present 8–12 GHz radio light curves of five dwarf nova (DN) type cataclysmic variable stars (CVs) in outburst (RX And, U Gem, and Z Cam), or superoutburst (SU UMa and YZ Cnc), increasing the number of radio-detected DN by a factor of 2. The observed radio emission was variable on time-scales of minutes to days, and we argue that it is likely to be synchrotron emission. This sample shows no correlation between the radio luminosity and optical luminosity, orbital period, CV class, or outburst type; however, higher cadence observations are necessary to test this, as the measured luminosity is dependent on the timing of the observations in these variable objects. The observations show that the previously detected radio emission from SS Cyg is not unique in type, luminosity (in the plateau phase of the outburst), or variability time-scales. Our results prove that DN, as a class, are radio emitters in outburst.
0035-8711
2229-2241
Coppejans, Deanne L.
9087eb84-f565-482c-b278-25715b96809c
Körding, Elmar G.
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Miller-Jones, James C. A.
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Rupen, Michael P.
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Sivakoff, Gregory R.
e725b4eb-7437-46ca-9f6e-e56847938736
Knigge, Christian
ac320eec-631a-426e-b2db-717c8bf7857e
Groot, Paul J.
4e8a3306-c19a-435f-bf03-be2bd029068d
Woudt, Patrick A.
078a12fd-3894-42c5-b3b6-1747a9325c51
Waagen, Elizabeth O.
82dde9e0-e94c-4ac7-875e-d5bc4f0e7909
Templeton, Matthew
5e4496ca-5663-4770-8063-f4610e3299c3
Coppejans, Deanne L.
9087eb84-f565-482c-b278-25715b96809c
Körding, Elmar G.
0be21e5d-be87-44cd-a369-2649192ac78c
Miller-Jones, James C. A.
cf33687c-452d-4d05-b0ef-ab9559afee59
Rupen, Michael P.
1b16922e-c186-4b9c-9848-f760dd80a4a8
Sivakoff, Gregory R.
e725b4eb-7437-46ca-9f6e-e56847938736
Knigge, Christian
ac320eec-631a-426e-b2db-717c8bf7857e
Groot, Paul J.
4e8a3306-c19a-435f-bf03-be2bd029068d
Woudt, Patrick A.
078a12fd-3894-42c5-b3b6-1747a9325c51
Waagen, Elizabeth O.
82dde9e0-e94c-4ac7-875e-d5bc4f0e7909
Templeton, Matthew
5e4496ca-5663-4770-8063-f4610e3299c3

Coppejans, Deanne L., Körding, Elmar G., Miller-Jones, James C. A., Rupen, Michael P., Sivakoff, Gregory R., Knigge, Christian, Groot, Paul J., Woudt, Patrick A., Waagen, Elizabeth O. and Templeton, Matthew (2016) Dwarf nova-type cataclysmic variable stars are significant radio emitters. Monthly Notices of the Royal Astronomical Society, 463 (2), 2229-2241. (doi:10.1093/mnras/stw2133).

Record type: Article

Abstract

We present 8–12 GHz radio light curves of five dwarf nova (DN) type cataclysmic variable stars (CVs) in outburst (RX And, U Gem, and Z Cam), or superoutburst (SU UMa and YZ Cnc), increasing the number of radio-detected DN by a factor of 2. The observed radio emission was variable on time-scales of minutes to days, and we argue that it is likely to be synchrotron emission. This sample shows no correlation between the radio luminosity and optical luminosity, orbital period, CV class, or outburst type; however, higher cadence observations are necessary to test this, as the measured luminosity is dependent on the timing of the observations in these variable objects. The observations show that the previously detected radio emission from SS Cyg is not unique in type, luminosity (in the plateau phase of the outburst), or variability time-scales. Our results prove that DN, as a class, are radio emitters in outburst.

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Accepted/In Press date: 22 August 2016
e-pub ahead of print date: 24 August 2016
Published date: 1 December 2016
Organisations: Astronomy Group

Identifiers

Local EPrints ID: 402253
URI: http://eprints.soton.ac.uk/id/eprint/402253
ISSN: 0035-8711
PURE UUID: 146d3300-e4c1-4006-914e-5117a54c8bce

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Date deposited: 04 Nov 2016 11:23
Last modified: 16 Dec 2019 19:38

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