Black HolesMassesThis is a progress report on a project to measure the black hole masses of the SDSS quasar sample from their broad emission lines and the continuum luminosity. We have developed an automated procedure to fit the continuum, and to deconvolve the broad and narrow line components...
Astronomers see a massive black hole awaken in real time | ESO Astronomers watch a supermassive black hole turn on for the first time RAW VIDEO: Astronomers View Birth Of Massive Black Hole In Real-Time In New First 2/2 Astronomers watch a supermassive black hole awaken in real time | CNN...
My previous scope was a fluke pm3094 and after many years of service no mechanical problems, but siglent is a hole different level of instrument. So is this normal for an instrument of €1400? Should I send it back on warranty? Logged The following users thanked this post: egonott...
The six most common elements of life on Earth (including more than 97% of the mass of a human body) are carbon, hydrogen, nitrogen, oxygen, sulphur and phosphorus. The colors in the spectra show dips, the size of which reveal the amount of these elements in the atmosphere of a star. ...
Double quasars: probes of black hole scaling relationships and merger scenarios We analyze the available sample of double quasars, and investigate their physical properties. Our sample comprises 85 pairs, selected from the Sloan Digita... G Foreman,M Volonteri,M Dotti - 《Astrophysical Journal》 ...
Combining rest--frame UV continuum luminosity with the width measurements of the Mg II and C IV lines, we derive a black hole mass of 2(+1.0/-0.5) x 10^8 solar masses, the lowest mass observed for z~6 QSOs to date, and derive an Eddington ratio of 1.6(+0.4/-0.6), amongst the...
We report the discovery of a quasar close to SDSS J0927+2943 (z = 0.713), which is a massive binary / recoiling black hole candidate. The companion quasar is at a projected distance of 125 h_70^{-1} kpc and exhibits a radial velocity difference of ~1400 km/s with respect to the...
A Candidate Recoiling Black Hole in a Nearby Dwarf Galaxy We have discovered a BH recoil candidate offset by 800 pc from a nearby dwarf galaxy. The object, SDSS1133, shows offset broad lines and strong variability... M Koss - 《Hst Proposal》 被引量: 0发表: 2014年 The Curious Case of...
We report the discovery of a dwarf Seyfert 1 active galactic nucleus (AGN) with a candidate intermediate-mass black hole hosted by the dwarf galaxy SDSS J160531.84+174826.1 at z = 0.032. A broad component of the Hα line with FWHM=781km s −1 is detected in its optical spectrum, and...
We use a comprehensive database of black hole masses (MBH) and nuclear luminosities to investigate the relationship between radio emission and MBH. Our sam... LC Ho 被引量: 52发表: 2001年 Submitted to the Astrophysical Journal Preprint typeset using L ATEX style emulateapj v. 6/22/04 A ...