Results 1 to 10 of about 402,790 (249)

Gamma-ray Burst Luminosity Relations: Two-dimensional versus Three-dimensional Correlations [PDF]

Astrophys.J.705:L15-L19, 2009, 2009
The large scatters of luminosity relations of gamma-ray bursts (GRBs) have been one of the most important reasons that prevent the extensive applications of GRBs in cosmology. In this paper, we extend the two-dimensional (2D) luminosity relations with $\tau_{\mathrm{lag}}$, $V$, $E_{\mathrm{peak}}$, and $\tau_{\mathrm{RT}}$ as the luminosity indicators
Bo Yu, Cardone, Collazzi, D'Agostini, Dai, Fenimore, Ghirlanda, Ghirlanda, Ghirlanda, Li, Liang, Norris, Reichart, Salvaterra, Schaefer, Schaefer, Schaefer, Shi Qi, Tan Lu, Tanvir   +19 more
arxiv   +3 more sources

The Empirical Mass-Luminosity Relation for Low Mass Stars [PDF]

Astrophys.SpaceSci.314:51-58,2008, 2007
This work is devoted to improving empirical mass-luminosity relations and mass-metallicity-luminosity relation for low mass stars. For these stars, observational data in the mass-luminosity plane or the mass-metallicity-luminosity space subject to non-negligible errors in all coordinates with different dimensions.
A. Alonso, A. Gould, A.S. Grossman, B. Cester, D. Pourbaix, D. Pourbaix, D. Pourbaix, E. Hertzsprung, F. D’Antona, Fang Xia, G. Laughlin, H. Copeland, H.N. Russell, I.N. Reid, J. Woitas, J. Woitas, J.M. Scalo, L.B. Lucy, O. Demircan, P.R. Bevington, S. Söderhjelm, Shulin Ren, T.J. Henry, T.J. Henry, V.M. Woolf, W.H. Press, X. Bonfils, X. Delfosse, Yanning Fu   +28 more
arxiv   +4 more sources

Supermassive Black Holes in the Hierarchical Universe: A General Framework and Observational Tests [PDF]

Astrophys.J.704:89-108,2009, 2009
(Abridged) We present a simple framework for the growth and evolution of supermassive black holes (SMBHs) in the hierarchical structure formation paradigm. In our model, black hole accretion is triggered during major mergers (mass ratio>~0.3) between host dark matter halos. The successive evolution of quasar luminosities follows a universal light curve
Adelberger, Bahcall, Barger, Begelman, Bell, Bennert, Binney, Bryan, Canalizo, Cole, Courteau, Eisenstein, Fan, Fan, Ferrarese, Ferrarese, Francke, Gao, Gebhardt, Graham, Graham, Graham, Granato, Greene, Haiman, Haiman, Heckman, Hennawi, Hennawi, Ho, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Jiang, Jiang, Jiang, King, Kollmeier, Kormendy, Lacey, Lapi, Lauer, Lidz, Magorrian, Marconi, Martini, Mo, Myers, Myers, Myers, Myers, Navarro, Richards, Richstone, Ross, Schneider, Serber, Shankar, Shankar, Shaver, Shen, Shen, Shen, Shen, Silk, Silverman, Small, Soltan, Steffen, Stewart, Strand, Thacker, Tinker, Tremaine, Tundo, Ueda, Volonteri, Warren, Wechsler, Wetzel, White, Woo, Wyithe, Wyithe, York, Yu, Yu, Yue Shen, Zel'dovich, Zhang   +91 more
arxiv   +3 more sources

The Galaxy Luminosity Function and Luminosity Density at Redshift z=0.1 [PDF]

, 2002
Using a catalog of 147,986 galaxy redshifts and fluxes from the Sloan Digital Sky Survey (SDSS), we measure the galaxy luminosity density at z = 0.1 in five optical bandpasses corresponding to the SDSS bandpasses shifted to match their rest-frame shape ...
Andrew J. Connolly, Avery Meiksin, David H. Weinberg, David W. Hogg, Donald P. Schneider, Efstathiou G., Istvan Csabai, J. Brinkmann, Jeffrey A. Munn, Jon Loveday, Kazuhiro Shimasaku, Maddox S. J., Malcolm Britton, Masataka Fukugita, Max Tegmark, Metcalfe N., Michael A. Strauss, Michael R. Blanton, Michael S. Vogeley, Neta A. Bahcall, R. C. Nichol, Sadanori Okamura, Thomas Quinn   +22 more
core   +2 more sources

The MICE luminosity monitor [PDF]

, 2013
The MICE experiment will provide the first measurement of ionisation cooling, a technique suitable for reducing the transverse emittance of a tertiary muon beam in a future neutrino factory accelerator facility.
Dobbs, A., Forrest, D,, Soler, F.J.P.
core   +1 more source

The nuclear to host galaxy relation of high redshift quasars [PDF]

, 2007
We present near-infrared imaging with ESO VLT+ISAAC of the host galaxies of low luminosity quasars in the redshift range 1 < z < 2, aimed at investigating the relationship between the nuclear and host galaxy luminosities at high redshift.
Aldo Treves, Bower R. G., Dunlop J. S., Francis P. J., Jari K. Kotilainen, Kormendy J., Kotilainen J. K., Marzia Labita, Michela Uslenghi, Renato Falomo, Taylor G. L.   +10 more
core   +3 more sources

Altered Luminosity Functions of Relativistically Beamed Jet Populations [PDF]

Astrophys.J.599:105-115,2003, 2003
The intrinsic luminosity functions of extremely fast jets found in many active galaxies and gamma-ray bursts are difficult to measure since their apparent luminosities are strongly affected by relativistic beaming. Past studies have only provided analytical predictions for the beamed characteristics of populations in which all jets have the same ...
arxiv   +1 more source

High Luminosity Muon Collider Design [PDF]

, 1996
Muon Colliders have unique technical and physics advantages and disadvantages when compared with both hadrons and electron machines. They should be regarded as complementary.
Gallardo, J. C., Palmer, R. B.
core   +3 more sources

Luminosity functions of cluster galaxies: The Near-ultraviolet luminosity function at $ \sim 0.05$ [PDF]

, 2018
We derive NUV luminosity functions for 6471 NUV detected galaxies in 28 $0.02 < z < 0.08$ clusters and consider their dependence on cluster properties.
Bremer, Malcolm, De Propris, Roberto, Phillipps, Steven   +2 more
core   +3 more sources

On estimators of the jet bolometric luminosity of Fermi 2LAC blazars [PDF]

, 2017
Bolometric luminosity is a basic physical parameter that is widely used in the study of blazars. Due to the lack of simultaneous full wavelength data, several estimators of the bolometric luminosity are being used in practice. In this paper, we study and evaluate the reliability and significance of six estimators, the $5GHz$ luminosity, the 1keV ...
arxiv   +1 more source