Updating quasar bolometric luminosity corrections

Details Updating quasar bolometric luminosity corrections Updating quasar bolometric luminosity corrections

2012-01-24

arxiv.org/abs/1201.5155v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

18 pages, 5 tables, 12 figures, accepted to MNRAS

Scientific paper

Bolometric corrections are used in quasar studies to quantify total energy output based on a measurement of a monochromatic luminosity. First, we enumerate and discuss the practical difficulties of determining such corrections, then we present bolometric luminosities between 1 \mu m and 8 keV rest frame and corrections derived from the detailed spectral energy distributions of 63 bright quasars of low to moderate redshift (z = 0.03-1.4). Exploring several mathematical fittings, we provide practical bolometric corrections of the forms L_iso=\zeta \lambda L_{\lambda} and log(L_iso)=A+B log(\lambda L_{\lambda}) for \lambda= 1450, 3000, and 5100 \AA, where L_iso is the bolometric luminosity calculated under the assumption of isotropy. The significant scatter in the 5100 \AA\ bolometric correction can be reduced by adding a first order correction using the optical slope, \alpha_\lambda,opt. We recommend an adjustment to the bolometric correction to account for viewing angle and the anisotropic emission expected from accretion discs. For optical/UV monochromatic luminosities, radio-loud and radio-quiet bolometric corrections are consistent within 95% confidence intervals so we do not make separate radio-loud and radio-quiet corrections. In addition, we provide several bolometric corrections to the 2-10 keV X-ray luminosity, which are shown to have very large scatter. Separate radio-loud and radio-quiet corrections are warranted by the X-ray data.

Affiliated with

Also associated with

No associations

Rating

Updating quasar bolometric luminosity corrections does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Updating quasar bolometric luminosity corrections, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Updating quasar bolometric luminosity corrections will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-682749