Modelling of Double-Peaked Emission Lines in AGN's

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Active Galactic Nuclei with Double-peaked Narrow Lines: Are They Dual Agns?

Double-peaked [O III] profiles in active galactic nuclei (AGNs) may provide evidence for the existence of dual AGNs, but a good diagnostic for selecting them is currently lacking. Starting from ∼ 7000 active galaxies in SDSS DR7, we assemble a sample of 87 type 2 AGNs with double-peaked [O III] profiles. The nuclear obscuration in the type 2 AGNs allows us to determine redshifts of host galaxie...

متن کامل

Molecular Emission Lines from High Redshift AGNs

A brief overview is given of the current status of molecular emission line observations at high redshift. New observations are presented of CO in the gravitationally lensed quasar MG 0414+0534 (detected) and the unlensed quasar PG 1634+706 (not detected). Also noted are the results of a partially completed search for water maser emission in several redshift bands above z = 0.4.

متن کامل

Long-term Profile Variability of Double Peaked Emission Lines in Active Galactic Nuclei

We present up to two decades of spectroscopic monitoring of the double-peaked broad Hα emission lines of seven broad-line radio galaxies. These extremely broad, double-peaked lines are successfully modeled by emission from gas in the outer accretion disk, and their profiles vary on timescales of months to years. This variability is a valuable probe for understanding the structure and dynamics o...

متن کامل

Double - Peaked Broad Emission Lines in NGC 4450 and Other LINERs 1

Spectra taken with the Hubble Space Telescope (HST) reveal that NGC 4450 emits Balmer emission lines with displaced double peaks and extremely high-velocity wings. This characteristic line profile, previously seen in a few nearby LINERs and in a small fraction of broad-line radio galaxies, can be interpreted as a kinematic signature of a relativistic accretion disk. We can reproduce the observe...

متن کامل

Black hole mass and accretion rate of active galactic nuclei with double-peaked broad emission lines

Using an empirical relation between the broad line region size and optical continuum luminosity, we estimated the black hole mass and accretion rate for 135 AGNs with double-peaked broad emission lines in two samples, one from the SDSS and the other from a survey of radio-loud broad emission line AGNs. With black hole masses in a range from 3×10M⊙ to 5×10 M⊙, these AGNs have the dimensionless a...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Symposium - International Astronomical Union

سال: 1994

ISSN: 0074-1809

DOI: 10.1017/s0074180900176338