Doctoral Program two years of the courtyard Nozomu of X-ray observation satellite (Suzaku、XMM-Newton) is dwarf nova of observation paper using the Monthly Notice of Royal Astronomical Society(MNRAS)It has been accepted by the magazine。
Dwarf nova is a type of white dwarf binary system called frequent often cataclysmic made suddenly bright visible light、To form a disk around the white dwarf。Disc is by accreting gas to white dwarf while Keplerian rotation、The size of the energy release represents the magnitude of the brightness at the time of accretion。Since this increase in light frequency is high、From more than 100 years ago is continuing research as an observation target of the pro-amateur astronomer has been underway。
Meanwhile white dwarf strong friction that in becomes a high temperature state to work on the inside of the disc because of the rotation、X-ray is radiated。Examine the behavior of a disc inside of this paper in the (we call at the time of quiet) dark time in visible light in detail by X-ray spectral analysis、Dwarf nova is accretion rate from the disk to the white dwarf until the increase in light has decided to newly revealed a tendency to decrease in chronological order。
https://academic.oup.com/mnras/article/488/4/5104/5536946
If you are interested in X-ray observations of cataclysmic variables, please refer to the Institute of Space and Astronautical Science of the column is the Tokyo of the Joint Graduate School Metropolitan University。
Physical cataclysmic of exploring in the X-ray observationhttp://www.isas.jaxa.jp/j/forefront/2007/ishida/index.shtml
Measuring the weight of the white dwarf at X-rayhttp://www.isas.jaxa.jp/j/forefront/2014/hayashi/index.shtml
