The University of Southampton
University of Southampton Institutional Repository

The rms-flux relation in accreting white dwarfs: another nova-like variable and the first dwarf nova

The rms-flux relation in accreting white dwarfs: another nova-like variable and the first dwarf nova
The rms-flux relation in accreting white dwarfs: another nova-like variable and the first dwarf nova
We report on the detection of the linear rms-flux relation in two accreting white dwarf binary systems: V1504 Cyg and KIC 8751494. The rms-flux relation relates the absolute root-mean-square (rms) variability of the light curve to its mean flux. The light curves analysed were obtained with the Kepler satellite at a 58.8 s cadence. The rms-flux relation was previously detected in only one other cataclysmic variable (CV), MV Lyr. This result reinforces the ubiquity of the linear rms-flux relation as a characteristic property of accretion-induced variability, since it has been observed in several black hole binaries, neutron star binaries and active galactic nuclei. Moreover, its detection in V1504 Cyg is the first time the rms-flux relation has been detected in a dwarf nova-type CV during quiescence. This result, together with previous studies, hence points towards a common physical origin of accretion-induced variability, independent of the size, mass or type of the central accreting compact object.
accretion, accretion discs, binaries: close, stars: dwarf novae, stars: individual: V1504 Cyg, stars: individual: KIC 8751494, novae, cataclysmic variables
1365-2966
2430-2437
Van de Sande, M.
d144b420-e5b5-4ff9-889b-189a39090b7c
Scaringi, S.
88701970-a1b9-41fe-bf55-886716ee3374
Knigge, C.
ac320eec-631a-426e-b2db-717c8bf7857e
Van de Sande, M.
d144b420-e5b5-4ff9-889b-189a39090b7c
Scaringi, S.
88701970-a1b9-41fe-bf55-886716ee3374
Knigge, C.
ac320eec-631a-426e-b2db-717c8bf7857e

Van de Sande, M., Scaringi, S. and Knigge, C. (2015) The rms-flux relation in accreting white dwarfs: another nova-like variable and the first dwarf nova. Monthly Notices of the Royal Astronomical Society, 448 (3), 2430-2437. (doi:10.1093/mnras/stv157).

Record type: Article

Abstract

We report on the detection of the linear rms-flux relation in two accreting white dwarf binary systems: V1504 Cyg and KIC 8751494. The rms-flux relation relates the absolute root-mean-square (rms) variability of the light curve to its mean flux. The light curves analysed were obtained with the Kepler satellite at a 58.8 s cadence. The rms-flux relation was previously detected in only one other cataclysmic variable (CV), MV Lyr. This result reinforces the ubiquity of the linear rms-flux relation as a characteristic property of accretion-induced variability, since it has been observed in several black hole binaries, neutron star binaries and active galactic nuclei. Moreover, its detection in V1504 Cyg is the first time the rms-flux relation has been detected in a dwarf nova-type CV during quiescence. This result, together with previous studies, hence points towards a common physical origin of accretion-induced variability, independent of the size, mass or type of the central accreting compact object.

Other
pdf - Author's Original
Download (796kB)

More information

Published date: 1 April 2015
Keywords: accretion, accretion discs, binaries: close, stars: dwarf novae, stars: individual: V1504 Cyg, stars: individual: KIC 8751494, novae, cataclysmic variables

Identifiers

Local EPrints ID: 430096
URI: http://eprints.soton.ac.uk/id/eprint/430096
ISSN: 1365-2966
PURE UUID: ff903330-105c-451b-a169-48015b65e417

Catalogue record

Date deposited: 11 Apr 2019 16:30
Last modified: 16 Mar 2024 00:53

Export record

Altmetrics

Contributors

Author: M. Van de Sande
Author: S. Scaringi
Author: C. Knigge

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×