1997A&A...322..242K

Query : 1997A&A...322..242K

1997A&A...322..242K - Astronomy and Astrophysics, volume 322242-255 (1997/6-1)

Magnetic pumping in the cataclysmic variable AE Aquarii.

KUIJPERS J., FLETCHER L., ABADA-SIMON M., HORNE K.D., RAADU M.A., RAMSAY G. and STEEGHS D.

Abstract (from CDS):

We propose that the radio outbursts of the cataclysmic variable AE Aqr are caused by eruptions of bubbles of fast particles from a magnetosphere surrounding the white dwarf. We investigate the acceleration process of magnetic pumping in the magnetosphere which is periodically driven both by the relative motion with the companion and with the infalling spray of gas at the spin frequency of the white dwarf. As the accretion rate is relatively low, the conversion of spin energy into acceleration (rather than heating) of electrons and protons can be efficient. The accelerated particles are trapped in the white dwarf magnetosphere until their total energy content becomes comparable to that of the trapping magnetic field structure and a MHD instability sets in. Synchrotron radiation is emitted in the expelled expanding plasmoid at radio and down to millimetric wavelengths. We find that there is sufficient energy transferred from the rotation energy of the rapidly-spinning white dwarf to fast particles by magnetic pumping to explain quiescent and flaring radio emissions.

Abstract Copyright: ∼

Journal keyword(s): acceleration of particles - magnetic fields -turbulence - cataclysmic variables - stars: individual: AE Aqr - radio continuum: stars

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* AE Aqr CV* 20 40 09.1598959176 -00 52 15.055595220   12.46 10.40   10.191 K3-5IV/V 705 0

Query : 1997A&A...322..242K

Basic data :
V* AE Aqr -- Cataclysmic Binary
Other object types: otypes_help 		* (HIP,CSI,...), X (1AXG,1E,...), V* (AN,ASAS,...), SB* (SBC7,SBC9), PM* (2018yCat,PM), CV* (2020MNRAS), Em* (EM*), UV (2012ApJS), NIR (2MASS), Opt (SDSS)
ICRS coord. (ep=J2000) : 		20 40 09.1598959176 -00 52 15.055595220 (Optical) [ 0.0142 0.0097 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		20 37 34.2844623920 -01 02 56.133103190 [ 0.0142 0.0097 90 ]
Gal coord. (ep=J2000) : 		045.2804318935501 -24.4186349143746 [ 0.0142 0.0097 90 ]
Proper motions mas/yr : 		70.527 13.018 [0.019 0.015 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -69.30 [4.8] / z(~) -0.000231 [0.000016] / cz -69.29 [4.80]
   C 2006AstL...32..759G
Parallaxes (mas): 		10.9112 [0.0181] A 2020yCat.1350....0G
Spectral type: 		K3-5IV/V C 2009A&ARv..17..251S
Fluxes (12) :
B 12.46 [0.26] D 2000A&A...355L..27H
V 10.40 [~] C 2002yCat.2237....0D
G 10.947426 [0.005303] C 2022yCat.1355....0G
I 10.191 [0.145] D 2012AcA....62...67K
J 9.45 [~] C 2002yCat.2237....0D
H 8.89 [~] C 2002yCat.2237....0D
K 8.76 [~] C 2002yCat.2237....0D
u (AB) 15.275 [0.009] C 2009ApJS..182..543A
g (AB) 12.263 [0.001] C 2009ApJS..182..543A
r (AB) 14.262 [0.01] C 2009ApJS..182..543A
i (AB) 13.454 [0.01] C 2009ApJS..182..543A
z (AB) 13.174 [0.013] D 2009ApJS..182..543A
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Identifiers (34) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HIP 101991 EM* CDS 1178 1RXS J204009.4-005216 3XMM J204009.1-005215
AN 342.1931 1ES 2037-01.0 SBC7 826 [BM83] X2037-010
ASAS J204009-0052.2 GCRV 71273 SBC9 1254 [FS2003] 1085
1AXG J204011-0052 GSC 05177-00636 SDSS J204009.16-005215.0 AAVSO 2035-01
CSI-01-20376 HIC 101991 TIC 248138854 Gaia DR3 4226332451596335616
1E 2037.5-0102 2MASS J20400915-0052151 TYC 5177-636-1 Gaia DR1 4226332447299604352
2E 4404 PLX 4923.01 V* AE Aqr Gaia DR2 4226332451596335616
2E 2037.5-0102 PM J20401-0052 WEB 18437
EM* RJHA 119 RAVE J204009.2-005215 2XMM J204009.0-005214

References (705 between 1850 and 2026) (Total 705)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 6    Distance : 4    Var : 2    Fe/H : 2    Plx : 7    PM : 4    SpT : 3   

   

Observing logs
ISO : 4    IUE : 49    XMM : 2   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : V* AE Aqr

Link by name to the catalogue in VizieR :

HIP 101991 2E 4404 GSC 05177-00636 HIC 101991 2MASS J20400915-0052151
RAVE J204009.2-005215 1RXS J204009.4-005216 SDSS J204009.16-005215.0 TYC 5177-636-1 V* AE Aqr
Gaia DR3 4226332451596335616 Gaia DR1 4226332447299604352 Gaia DR2 4226332451596335616

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