Abstract Details
| Name: Akshaya SubbannaMS Affiliation: Christ (Deemed to be University), Bengaluru Conference ID: ASI2019_176 Title : COMPONENTS OF THE DIFFUSE ULTRAVIOLET BACKGROUND RADIATION Authors and Co-Authors : M. S. Akshaya, Christ (Deemed to be Unviversity), Bengaluru Jayant Murthy, Indian Institute of Astrophysics, Bengaluru S. Ravichandran, Chrirt (Deemed to be University), Bengaluru Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : Diffuse background is present at all the wavelengths of the electromagnetic spectrum. The component of this background in the ultraviolet (UV) regime mainly has contributions from the dust scattered star light and the extragalactic background light (EBL) coming from galaxies, QSOs and the intergalactic medium. But there is also some part of this background radiation whose source is as yet unidentified. We will be presenting the work carried out in quantifying the various known contributors to this diffuse background and our estimates of the offsets with unknown origin in the far-UV and near-UV bands of the Galaxy Evolution Explorer (GALEX) by studying the UV surface brightness in the regions of the Galactic poles. The estimates were also tested by modeling the UV surface brightness observed from a Galactic cirrus cloud near the north Galactic pole where we find that our dust model fits well with the observed UV surface brightness after taking into account the estimated contributions from EBL and the unidentified offsets. |