| Abstract : | Seyfert-1 Galaxies, one of the largest sub-groups of active galactic nuclei, are home to super massive black holes(SMBHs). The central SMBH is surrounded by a rotating accretion disk which emits in X-rays, close to the Eddington limit. Their spectra is characterised by the presence of both narrow and broad emission lines. This study looks at the broadband X-ray and ultraviolet spectrum of the Seyfert-1, MRK0279. Simultaneous multi-wavelength observations made by the different instruments onboard AstroSat namely, SXT, LAXPC and UVIT, were used. The observation was made in 2018 and had an exposure time of 140ks. X-ray data from ESA’s XMM-Newton data was also used for analysis. This 60ks observation was made in 2005. Data was filtered to remove any background emissions and flares. Spectra for corresponding energy bands were then extracted from the filtered files. Spectra for the different energy bands, namely 0.3-8.0keV and 4.0-80.0keV respectively, were merged to obtain a single broadband spectrum. XMM-Newton observations are in the broad X-ray energy band 0.3-10.0keV. The spectral energy density function obtained was then fit to theoretical models. It was found that the observed spectrum can be explained using a powerlaw emission as is expected from a Seyfert-1 galaxy. The flux calculated from the spectra agrees closely with the predicted values. |
