On the Rapid Spin‐down and Low‐Luminosity Pulsed Emission from AE Aquarii | Zendy

ChulSung Choi | Zendy; Insu Yi | Zendy

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On the Rapid Spin‐down and Low‐Luminosity Pulsed Emission from AE Aquarii

Author(s) -

ChulSung Choi,

Insu Yi

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/309149

Subject(s) - physics , white dwarf , astrophysics , accretion (finance) , luminosity , spin (aerodynamics) , intermediate polar , astronomy , stars , galaxy , thermodynamics

AE Aqr is an unusual close binary system with a very short white dwarf spinperiod, a high spin-down rate, a relatively low quiescent luminosity, and clearpulse signals. The exact nature of the large spin-down power has not been wellexplained mainly due to the fact that the observed luminosities in variousenergy ranges are much lower than the spin-down power. We consider anunconventional picture of AE Aqr in which an accreting white dwarf, modeled asa magnetic dipole whose axis is misaligned with the spin axis, is rapidlyspun-down via gravitational radiation emission and therefore the spin-downpower is not directly connected to any observable electromagnetic emission.Comment: 25 pages and one PS figure, Submitted to Ap

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