Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

Circular polarimetry of suspect wind-accreting magnetic pre-polars

Tools
- Tools
+ Tools

Hakala, Pasi, Parsons, Steven G., Marsh, Thomas R., Gänsicke, Boris T., Ramsay, Gavin, Schwope, Axel and Hermes, J. J. (2022) Circular polarimetry of suspect wind-accreting magnetic pre-polars. Monthly Notices of the Royal Astronomical Society, 513 (3). pp. 3858-3870. doi:10.1093/mnras/stac1111 ISSN 1745-3933.

[img]
Preview
PDF
WRAP-Circular-polarimetry-of-suspect-wind-accreting-magnetic-pre-polars-Marsh-22.pdf - Published Version - Requires a PDF viewer.
Available under License Creative Commons Attribution 4.0.

Download (2077Kb) | Preview
Official URL: http://dx.doi.org/10.1093/mnras/stac1111

Request Changes to record.

Abstract

We present results from a circular polarimetric survey of candidate detached magnetic white dwarf – M dwarf binaries obtained using the Nordic Optical Telescope, La Palma. We obtained phase resolved spectropolarimetry and imaging polarimetry of seven systems, five of which show clearly variable circular polarisation. The data indicate that these targets have white dwarfs with magnetic field strengths >80 MG. Our study reveals that cyclotron emission can dominate the optical luminosity at wavelengths corresponding to the cyclotron emission harmonics, even in systems where the white dwarfs are only wind-accreting. This implies that a very significant fraction of the stellar wind of the companion star is captured by the magnetic white dwarf reducing the magnetic braking in pre-cataclysmic variables (CVs). Furthermore, the polarimetric confirmation of several detached, wind-accreting magnetic systems provides observational constraints on the models of magnetic CV evolution and white dwarf magnetic field generation. We also find that the white dwarf magnetic field configuration in at least two of these systems appears to be very complex.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): White dwarf stars, White dwarf stars -- Magnetic properties, Cataclysmic variable stars , Astrophysical spectropolarimetry , Polarimetry , Cyclotron, Stellar winds
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Oxford University Press
ISSN: 1745-3933
Official Date: 25 April 2022
Dates:
DateEvent
25 April 2022Published
14 April 2022Accepted
2 March 2022Submitted
Volume: 513
Number: 3
Page Range: pp. 3858-3870
DOI: 10.1093/mnras/stac1111
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 4 July 2022
Date of first compliant Open Access: 5 July 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
213056.71+442046.5[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
ST/T000406/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
101020057[ERC] Horizon 2020 Framework Programmehttp://dx.doi.org/10.13039/100010661
Open Access Version:
  • ArXiv

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics

twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us