Distances of cataclysmic variables and related objects derived from<i>Gaia</i>Data Release 1

Ramsay, Gavin; Schreiber, M. R.; Gänsicke, B. T.; Wheatley, P. J.

doi:10.1051/0004-6361/201730679

Cited by 32 publications

(24 citation statements)

References 122 publications

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“…The first data release of GAIA has produced new estimations for the parallax of 16 cataclysmic variables, among them the three old novae V603 Aql, RR Pic, HR Del [114]. The GAIA parallaxes of V603 Aql, RR Pic are in broad agreement with the HST parallax estimation.…”

Section: Distancesmentioning

confidence: 62%

Multifrequency Behaviour of Galactic and Extragalactic Novae

Poggiani¹

2018

Proceedings of XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop — PoS(MULTIF2017)

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The outbursts of novae are among the strongest explosions in the Universe. The eruptions involve physical processes that span the whole electromagnetic spectrum, demanding multifrequency observations. The photometric and spectroscopic observations in the optical domain are combined with radio, infrared, X-ray and gamma ray observations, allowing to discover new phenomena, like the GeV gamma ray emission.

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Section: Distancesmentioning

confidence: 62%

Multifrequency Behaviour of Galactic and Extragalactic Novae

Poggiani¹

2018

Proceedings of XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop — PoS(MULTIF2017)

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“…More details can be found in [47,48]. Even the recent revision of the distance [36] shows that the luminosity of V Sge even in the low state is still much higher than what is possible for operation of the thermal-viscous instability of the disk. Although the transitions between the high and low states are sometimes cyclic, this cycle displays a complicated evolution and is only intermittently present.…”

Section: Pos(frapws2018)058mentioning

confidence: 99%

Long-term activity of cataclysmic variables

Šimon¹

2019

Proceedings of Frontier Research in Astrophysics – III — PoS(FRAPWS2018)

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We show examples of the long-term optical activity of various types of cataclysmic variables. Episodic events are the common properties of this activity which often consists of the discrete levels of brightness and/or discrete phenomena (e.g. outbursts, low state episodes). The length of the recurrence time T C of the outbursts in dwarf novae (DNe) displays complicated time changes. This suggests that the individual outbursts of a given DN depend on each other, and only a small fraction of the disk matter is accreted in a given outburst. The processes in the cool disk (between the outbursts) play a big role in DNe. The low states in novalikes and polars often occur in clusters. The state transitions sometimes occur in intermittently present cycles. In the interpretation, changes of the position of the active regions on the donor with respect to the L1 point by a differential rotation of the donor are suggested. The short high states, surrounded by the long low states, can be explained by isolated bursts of mass transfer from the donor. EI UMa is an example of the intermediate polars whose brightness can largely fluctuate on the timescale of days and also produce flares. Large changes of the mode of accretion (flares, shalow low states) occur in a similar brightness of EI UMa, hence in a similar mass accretion rate onto the WD. The long-term activity of propellers depends on the configuration of the magnetic field of the white dwarf; this activity of AR Sco, with the luminosity comparable to the deep and very long (at least several decades) low states of novalikes, is dominated by a strong orbital modulation of synchrotron emission.

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“…Nine additional parallaxes have been measured with Hipparcos [26]. The first data release of GAIA has provided parallaxes for 16 cataclysmic variables [46].…”

Section: Cataclysmic Variables: Distancesmentioning

confidence: 99%