Rosat data analysis of TT arietis

Abstract

In this work, we have investigated the spectral and temporal properties of TTArietis in the Aries constellation, using the data obtained fom the PSPCinstrument onboard the ROSAT satellite. We have found that two-componentspectral models are not adequate to fit the x-ray spectrum of TT Arietis but thebest fit is reached using a single-component model including THBR (thermalbremsstrahlung). This indicates the presence of optically thin boundary layerbetween the white dwarf and the accretion disk. In timing analysis, the orbitalperiod that is shown in optical investigations is encountered. In addition to this,quasi-periodic oscillation of 1000 sec is observed.