A 5.3-min-period pulsing white dwarf in a binary detected from radio to X-rays - INSPIRE

DataBETA

A 5.3-min-period pulsing white dwarf in a binary detected from radio to X-rays

Jun 15, 2023

12 pages

Published in:

Nature Astron. 7 (2023) 8, 931-942

Published: Jun 15, 2023

e-Print:

2306.09272 [astro-ph.SR]

DOI:

10.1038/s41550-023-01995-x

View in:

ADS Abstract Service

reference search26 citations

Citations per year

Abstract: (Springer)

White dwarf stars are the most common stellar fossils. When in binaries, they make up the dominant form of compact object binary within the Galaxy and can offer insight into different aspects of binary formation and evolution. One of the most remarkable white dwarf binary systems identified to date is AR Scorpii (AR Sco). AR Sco is composed of an M dwarf star and a rapidly spinning white dwarf in a 3.56 h orbit. It shows pulsed emission with a period of 1.97 min over a broad range of wavelengths, which led to it being known as a white dwarf pulsar. Both the pulse mechanism and the evolutionary origin of AR Sco provide challenges to theoretical models. Here we report the discovery of a sibling of AR Sco, J191213.72-441045.1, which harbours a white dwarf in a 4.03 h orbit with an M dwarf and exhibits pulsed emission with a period of 5.30 min. This discovery establishes binary white dwarf pulsars as a class and provides support for proposed formation models for white dwarf pulsars.

Note:

Authors' version of article published in Nature Astronomy (DOI 10.1038/s41550-023-01995-x)

References(76)

Figures(5)

[1]

VLA radio observations of AR Scorpii

et al.

- Astron.Astrophys. 611 (2018) A66
•
e-Print:
- 1801.07258
•
DOI:
- 10.1051/0004-6361/201732380

[2]

A Non-thermal Pulsed X-Ray Emission of AR Scorpii

et al.

- Astrophys.J. 853 (2018) 2, 106
•
e-Print:
- 1712.06341
•
DOI:
- 10.3847/1538-4357/aaa23d

[3]

A radio pulsing white dwarf binary star

et al.

- Nature 537 (2016) 374
•
e-Print:
- 1607.08265
•
DOI:
- 10.1038/nature18620

[4]

AR Sco: a precessing white dwarf synchronar?

JI Katz

- Astrophys.J. 835 (2017) 150
•
DOI:
- 10.3847/1538-4357/835/2/150

[5]

A Model for AR Scorpii: Emission from Relativistic Electrons Trapped by Closed Magnetic Field Lines of Magnetic White Dwarfs

- Astrophys.J. 851 (2017) 2, 143
•
e-Print:
- 1712.03488
•
DOI:
- 10.3847/1538-4357/aa9b33

[6]

Time series photopolarimetry and modelling of the white dwarf pulsar in AR Scorpii

- Mon.Not.Roy.Astron.Soc. 481 (2018) 2, 2384-2392
•
e-Print:
- 1809.01884
•
DOI:
- 10.1093/mnras/sty2407

[7]

Probing the non-thermal emission geometry of AR Sco via optical phase-resolved polarimetry

et al.

- Mon.Not.Roy.Astron.Soc. 510 (2022) 2, 2998-3010
•
e-Print:
- 2112.08708
•
DOI:
- 10.1093/mnras/stab3595

[8]

A Model of White Dwarf Pulsar AR Scorpii

- Astrophys.J.Lett. 831 (2016) 1, L10
•
e-Print:
- 1609.02508
•
DOI:
- 10.3847/2041-8205/831/1/L10

[9]

Ages for illustrative field stars using gyrochronology: viability, limitations and errors

Sydney A. Barnes

- Astrophys.J. 669 (2007) 1167-1189
•
e-Print:
- 0704.3068
•
DOI:
- 10.1086/519295

[10]

White dwarf rotation as a function of mass and a dichotomy of mode line widths: Kepler observations of 27 pulsating DA white dwarfs through K2 Campaign 8

JJ Hermes

- Astrophys.J.Suppl. 232 (2017) 23
•
DOI:
- 10.3847/1538-4365/aa8bb5

Pulsating white dwarfs: new insights

Alejandro H. Córsico
(
- La Plata U. and
- Buenos Aires, CONICET
)
,
Leandro G. Althaus
(
- La Plata U. and
- Buenos Aires, CONICET
)
,
Marcelo M. Miller Bertolami
(
- La Plata U. and
- Buenos Aires, CONICET
)
,
S.O. Kepler
(
- Rio Grande do Sul U.
)

- Astron.Astrophys.Rev. 27 (2019) 1, 7
•
e-Print:
- 1907.00115
•
DOI:
- 10.1007/s00159-019-0118-4

[12]

The DQ Herculis stars

J. Patterson

- Publ.Astron.Soc.Pac. 106 (1994) 209-238
•
DOI:
- 10.1086/133375

Magnetospheric interaction in white dwarf binaries AR Sco and AE Aqr

et al.

e-Print:
- 2004.11474

[14]

Accretion by rotating magnetic neutron stars. II. Radial and vertical structure of the transition zone in disk accretion

P. Ghosh
,
FK Lamb

- Astrophys.J. 232 (1979) 259-276
•
DOI:
- 10.1086/157285

[15]

Constraining the evolution of cataclysmic variables via the masses and accretion rates of their underlying white dwarfs

AF Pala

- Mon.Not.Roy.Astron.Soc. 510 (2022) 6110-6132
•
DOI:
- 10.1093/mnras/stab3449

[16]

Diamagnetic accretion in intermediate polars-I. Blob orbits and spin evolution

GA Wynn
,
AR King

- Mon.Not.Roy.Astron.Soc. 275 (1995) 9-21
•
DOI:
- 10.1093/mnras/275.1.9

[17]

The origin and evolution of magnetic white dwarfs in close binary stars

MR Schreiber
,
D. Belloni
,
BT Gänsicke
,
SG Parsons
,
M. Zorotovic

- Nature Astron. 5 (2021) 648-654
•
DOI:
- 10.1038/s41550-021-01346-8

[18]

A common origin of magnetism from planets to white dwarfs

J. Isern
,
E. García-Berro
,
B. Külebi
,
P. Lorén-Aguilar

- Astrophys.J.Lett. 836 (2017) L28
•
DOI:
- 10.3847/2041-8213/aa5eae

[19]

Slow convection and fast rotation in crystallization-driven white dwarf dynamos

S. Ginzburg
,
J. Fuller
,
A. Kawka
,
I. Caiazzo

- Mon.Not.Roy.Astron.Soc. 514 (2022) 4111-4119
•
DOI:
- 10.1093/mnras/stac1363

[20]

Enigmas from the Sloan Digital Sky Survey DR7 Kleinman White Dwarf Catalog

- Astrophys.J. 804 (2015) 2, 93
•
e-Print:
- 1504.08063
•
DOI:
- 10.1088/0004-637X/804/2/93

[21]

Radiatively driven, time dependent bipolar outflows

- Mon.Not.Roy.Astron.Soc. 509 (2021) 1, 85-99
•
e-Print:
- 2109.14261
•
DOI:
- 10.1093/mnras/stab2841

[22]

A volume-limited sample of cataclysmic variables from Gaia DR2: space density and population properties

AF Pala

- Mon.Not.Roy.Astron.Soc. 494 (2020) 3799-3827
•
DOI:
- 10.1093/mnras/staa764

ZTF J185139.81+171430.3 = ZTF18abnbzvx: the second white dwarf pulsar?

e-Print:
- 2107.09913

e-Print:
- 2109.03979

e-Print:
- 2203.13975

1-25 of 76
1
2
3
4
25 / page