Conveners
Cataclysmic Variables
- Banibrata Mukhopadhyay (Indian Institute of Science)
Asynchronous polars (APs) are an exceptional type of magnetic cataclysmic variables where there is a lack (~1-2%) of perfect synchronicity, unlike polars, between the spin period of the primary white dwarf star and the orbital period of the binary system. Also, there are a few unusual intermediate polars (IPs) where the difference between spin and orbital period is much less (~10-20%) compared...
Intermediate polars (IPs) are the low magnetic field strength ( B $\sim$10$^{6}$-10$^{7}$ G) subclass of magnetic cataclysmic variables. IPs are asynchronous systems, and they follow the asynchronism relation as the spin period of the white dwarf (WD) is relatively less than the orbital period of the binary system. Most IPs have orbital periods longer than the 'period gap' of 2-3 h. However,...
Nova outburst is an astronomical phenomenon accompanied by the ejection of matter, causing an increase in luminosity, leading to the appearance of a sudden bright star in the sky, which fades away over several weeks or months. They are interacting binary systems with a white dwarf (WD) primary and a main-sequence or sub/red-giant secondary. We have observed outbursts of the recurrent nova M31N...
The Ultra Violet Imaging Telescope (UVIT) is one of the payloads on board India's first multi-wavelength astronomical observatory AstroSat, launched by the Indian Space Research Organisation on 28th September 2015. Since its launch, UVIT has been observing several compact objects that includes X-ray binaries as well as active galactic nuclei (AGN). A systematic investigation is being carried...
