Grazing Eclipsing Dwarf Nova CW Monocerotis: Dwarf Nova-Type Outburst in a Possible Intermediate Polar?

Kato Taichi; Uemura Makoto; Kiyota Seiichiro; Tanabe Kenji; Koizumi Mitsuo; Kida Mayumi; Nishi Yuichi; Tanaka Sawa; Ueoka Rie; Yasui Hideki; Vanmunster Tonny; Nogami Daisaku; Yamaoka Hitoshi

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Grazing Eclipsing Dwarf Nova CW Monocerotis: Dwarf Nova-Type Outburst in a Possible Intermediate Polar?

机译：放牧矮新星CW Monocerotis：可能在中间极地中出现矮新星爆发？

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Weobservedthe2002Octobera€“NovemberoutburstofthedwarfnovaCWMon.Theoutburstshowedaclearsignatureofapremaximumhalt,andamorerapiddeclineafterreachingtheoutburstmaximum.Ontwoseparateoccasions,duringthepremaximumstageandneartheoutburstmaximum,shalloweclipseswererecorded.Thisfindingconfirmsthepreviouslysuggestedpossibilityofthegrazingeclipsingnatureofthissystem.Theseparateoccurrenceoftheeclipsesandthepremaximumhaltcanbeunderstoodasbeingtheresultofacombinationofatwo-stepignitionofanoutburstandtheinside-outpropagationoftheheatingwave.Wedetectedacoherentshort-period(0.02549d)signalontwosubsequentnightsaroundtheopticalmaximum.Thissignalwaslikelypresentduringthemaximumphaseofthe2000Januaryoutburst.Weinterpretthissignalasbeingasignatureoftheintermediatepolar(IP)typepulses.Theratherstrangeoutburstproperties,strongandhardX-rayemission,andthelowluminosityoftheoutburstmaximummightbeunderstoodasaconsequenceofthesupposedIPnature.Theratiobetweenthesuggestedspinperiodandtheorbitalperiod,however,isratherunusualforasystemhavinganorbitalperiodof$$sim0.176,mathrm{d}$$.

机译：Weobservedthe2002Octobera€“NovemberoutburstofthedwarfnovaCWMon.Theoutburstshowedaclearsignatureofapremaximumhalt，andamorerapiddeclineafterreachingtheoutburstmaximum.Ontwoseparateoccasions，duringthepremaximumstageandneartheoutburstmaximum，shalloweclipseswererecorded.Thisfindingconfirmsthepreviouslysuggestedpossibilityofthegrazingeclipsingnatureofthissystem.Theseparateoccurrenceoftheeclipsesandthepremaximumhaltcanbeunderstoodasbeingtheresultofacombinationofatwo-stepignitionofanoutburstandtheinside-outpropagationoftheheatingwave.Wedetectedacoherentshort周期（0.02549d）signalontwosubsequentnightsaroundtheopticalmaximum.Thissignalwaslikelypresentduringthemaximumphaseofthe2000Januaryoutburst.Weinterpretthissignalasbeingasignatureoftheintermediatepolar（IP）typepulses.Theratherstrangeoutburstproperties，strongandhardX-rayemission，andthelowluminosityoftheoutburstmaximummightbeunderstoodasaconsequenceofthesupposedIPnature.Theratiobetweenthesuggestedspinperiodandtheorbitalperiod，但是，伊斯拉瑟伦通常，系统的轨道周期为$ sim0.176美元，mathrm {d} $$。

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《PASJ: Publications of the Astronomical Society of Japan》 |2003年第2期|共页
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Kato Taichi; Uemura Makoto; Kiyota Seiichiro; Tanabe Kenji; Koizumi Mitsuo; Kida Mayumi; Nishi Yuichi; Tanaka Sawa; Ueoka Rie; Yasui Hideki; Vanmunster Tonny; Nogami Daisaku; Yamaoka Hitoshi;
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Grazing Eclipsing Dwarf Nova CW Monocerotis: Dwarf Nova-Type Outburst in a Possible Intermediate Polar?

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