English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

SDSS J080434.20+510349.2 is the 13th dwarf nova containing a pulsating whitedwarf. Among the accreting pulsators that have experienced a dwarf novaeoutburst, SDSS J0804 has the most dramatic history of events within a shorttime scale: the 2006 outburst with 11 rebrightenings, series of December 2006 -January 2007 mini-outbursts, the 2010 outburst with 6 rebrightenings. Over2006-2011, SDSS J080434.20+510349.2 in addition to positive 0.060^d superhumpsduring the outburst and 1-month post-outburst stage, 0.059005^d orbital humpsin quiescence, displayed a significant short-term variations with periods P1 =12.6 min, P2 = 21.7 min, P3 = 14.1 min and P4 = 4.28 min. The 12.6-minperiodicity first appeared 7 months after the 2006 outburst and was the mostprominent one during the following \sim 900 days. It was identified asnon-radial pulsations of the white dwarf. The period of this pulsations variedwithin a range of 36 s, and amplitude changed from 0.013m to 0.03m.Simultaneously one could observe the 21.7-min and 14.3-min periodicities with amuch lower significance level. During the minioutbursts the 21.7-minperiodicity became the most powerful, the 12.6-min periodicity was lesspowerful, and the 12.6-min periodicity had the lowest significance. After the2011 outburst the most prominent short-term periodicity appeared \sim 7 monthsafter the outburst, but at 4.28 min. We identified that variability withperiods P2, P3 and P4 could be additional pulsation modes, however the relationof P4 to white dwarf pulsation also can't be excluded.

SDSS J080434.20+510349.2: Cataclysmic Variable Witnessing the Instability Strip?