Extremely High Velocity Outflows in Quasars
Abstract
We present a survey of extremely high velocity outflows (outflowing at speeds between 0.1c and 0.2c) observed as broad blueshifted CIV absorption lines in Sloan Digital Sky Survey Data Release 9 catalogue quasar spectra (DR9Q). We normalized and analyzed the 6760 quasar spectra with signal-to-noise larger than 10 and of quasars with redshift larger than 1.9. This realm of the parameter space of quasar outflow's velocity has not been included in previous surveys of quasar spectra, and might pose the biggest constraints for theoretical models. Moreover, the kinetic luminosity of outflows at 0.2c is two orders of magnitude larger than those speeding at typically high velocities (~10,000 km/s). Studying extremely high velocity outflows can help us understand the interaction between the central supermassive black hole and the host galaxy, so we will discuss the characteristics and properties of the found sample.
- Publication:
-
American Astronomical Society Meeting Abstracts #233
- Pub Date:
- January 2019
- Bibcode:
- 2019AAS...23321305R