Abstract Details
| Name: Avinanda Chakraborty Affiliation: Presidency University, Kolkata Conference ID: ASI2019_274 Title : Hβ emission line properties of high velocity quasars and correlation between the origin of radio emission and optical emission Authors and Co-Authors : Avinanda Chakraborty,Presidency University, Dr.Anirban Bhattacharjee,Sul Ross State University, Dr. Suchetana Chatterjee,Presidency University, Miranda Gilbert,Sul Ross State University Abstract Type : Poster Abstract Category : Extragalactic Astronomy Abstract : Surveys have shown radio-loud (RL) quasars constitute 10%-15% of the total quasar population [ Among quasars most have weak or no jets (radio-quiet) and some have powerful radio-emitting jets (radio-loud). It is also said that radio-loud quasars were an aligned version of radio-quiet quasars]. In a previous work, we have observed that this radio-loud fraction (RLF) increases with increasing full width half maximum (FWHM) of Hβ emission line velocity (http://adsabs.harvard.edu/abs/). In this poster we present the results of Hβ emission line properties of quasars from Shen et al. 2011 catalog, having FWHM of greater than 15000km/s [RLF is basically the ratio of radio fluxes (at 6cm) to optical fluxes (at 2500Å) ].We have plotted L2500Å [optical luminosity at 2500Å] and Lrad [radio luminosity at 6cm or 5GHz] within different redshift intervals to see radio luminosity dependence on L2500Å. We have found negative slope for higher redshift for higher velocity objects but all the slopes including this one and the errors are consistent with zero so we can conclude that Lrad and L2500Å are independent. We have also compared the various properties of RL and RQ quasars in this sample space. We have found that for the continuum luminosity at 5100Å RQ's are less luminous than RL's in higher redshifts. Acknowledgement-I am funded through the Department of Science and Technology through the SERB Early Career Research Grant |