Results 1 to 10 of about 412,342 (337)

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

Precision luminosity measurements at LHCb [PDF]

Journal of Instrumentation, 2014
Measuring cross-sections at the LHC requires the luminosity to be determined accurately at each centre-of-mass energy √s. In this paper results are reported from the luminosity calibrations carried out at the LHC interaction point 8 with the LHCb ...
Aaij, R, Affolder, A, Akiba, K, Alexander, M., Ali, S, Appleby, R B, Artuso, M, Bay, A, Beddow, J, Behrendt, O, Benton, J, Beuzekom, M van, Bjørnstad, P M, Bogdanova, G, Borghi, S, Borgia, A, Bowcock, T J V, Brand, J van den, Brown, H, Buytaert, J, Callot, O, Capua, S De, Carroll, J, Casse, G, Collins, P, Coutinho, R Silva, Dean, C.-T., Doets, M, Donleavy, S, Dossett, D, Dumps, R, Eckstein, D, Eklund, L., Farinelli, C, Farry, S, Ferro-Luzzi, M, Frei, R, Garofoli, J, Gersabeck, M, Gershon, T, Gong, A, Gong, H, Gordon, H, Haefeli, G, Harrison, J, Heijne, V, Hennessy, K, Hulsbergen, W, Huse, T, Hutchcroft, D, Hynds, D, Jaeger, A, Jalocha, P, Jans, E, John, M, Karodia, S, Keaveney, J, Ketel, T, Korolev, M, Kraan, M, Lafferty, G, Latham, T, Laštovička, T, Lefeuvre, G, Leflat, A, Liles, M, Longstaff, I, Lysebetten, A van, MacGregor, G, Marinho, F, McNulty, R, Merkin, M, Moran, D, Mountain, R, Mous, I, Mylroie-Smith, J, Needham, M, Nikitin, N, Noor, A, Oblakowska-Mucha, A, Ogilvy, S, Papadelis, A, Pappagallo, M., Parkes, C, Patel, G D, Rakotomiaramanana, B, Redford, S, Reid, M, Rinnert, K, Rodrigues, E, Saavedra, A F, Schiller, M, Schneider, O, Shears, T, Smith, N A, Soler, F.J.P., Spradlin, P, Szumlak, T, Thomas, C, Tilburg, J van, Tobin, M, Velthuis, J, Verlaat, B, Viret, S, Volkov, V, Wallace, C, Wang, J, Webber, A, Whitehead, M, Zverev, E   +109 more
core   +25 more sources

Enhancing Retina Images by Lowpass Filtering Using Binomial Filter. [PDF]

Diagnostics (Basel)
This study presents a method to enhance the contrast and luminosity of fundus images with boundary reflection. In this work, 100 retina images taken from online databases are utilized to test the performance of the proposed method.
AlRowaily MH, Arof H, Ibrahim I, Yazid H, Mahyiddin WA.   +4 more
europepmc   +2 more sources

Luminosity Guaranteed [PDF]

Pacific Philosophical Quarterly, 2017
This article aims to show that Williamson's anti-luminosity argument does not succeed if we presuppose a constitutive connection between the phenomenal and the doxastic.
Barz, Wolfgang
core   +3 more sources

The Protostellar Luminosity Function [PDF]

The Astrophysical Journal, 2011
The protostellar luminosity function (PLF) is the present-day luminosity function of the protostars in a region of star formation. It is determined using the protostellar mass function (PMF) in combination with a stellar evolutionary model that provides ...
Andre, Baraffe, Bonnell, Christopher F. McKee, Connelley, Covey, Dunham, Dunham, Enoch, Enoch, Evans, Fuchs, Greene, Hartmann, Heiderman, Hosokawa, Hosokawa, Kirk, Kratter, Masunaga, McKee, McKee, McKee, McLaughlin, Mellon, Miller, Muzerolle, Myers, Myers, Offner, Offner, Offner, Palla, Pech, Robitaille, Sandell, Stella S. R. Offner, Tan, Vorobyov, White, White, Whitney, Young, Zhu   +43 more
core   +3 more sources

Characterizing the luminosity components of luminous infrared galaxies in multi-wavelength from the X-ray to the far-infrared. [PDF]

Sci Rep
We characterize luminosity components of Ultra/Luminous Infrared Galaxies (U/LIRGs) in multi-wavelength from the X-ray to far-infrared. A set of 63 AGN U/LIRGs was selected where these galaxies are powered by a central active galactic nucleus (AGN ...
Ali AAM, Gadallah KAK, Shalabiea OM, Beheary MM.   +3 more
europepmc   +2 more sources

The Luminosity Function of M3 [PDF]

The Astrophysical Journal, 1999
We present a high precision, large sample luminosity function (LF) for the Galactic globular cluster M3. With a combination of ground based and Hubble Space Telescope data we cover the entire radial extent of the cluster.
A. Chieffi, B. Dorman, B. Paltrinieri, Bell R. A., Bergbusch P. A., Buonanno R., Buonanno R., Cassisi S., Castellani V., Chieffi A., De Santis R., Degl'Innocenti S., E. Carretta, F. Fusi Pecci, F. R. Ferraro, Ferraro F. R., Ferraro F. R., Ferraro F. R., Fusi Pecci F., King I. R., Kraft R. P., Krist J., Laget M., O. Straniero, Pont F., Proffit C. R., R. Buonanno, R. T. Rood   +27 more
core   +3 more sources

Mid-infrared luminosity as an indicator of the total infrared luminosity of galaxies [PDF]

Astronomy & Astrophysics, 2004
The infrared (IR) emission plays a crucial role for understanding the star formation in galaxies hidden by dust. We first examined four estimators of the IR luminosity of galaxies, L_fir (Helou et al. 1988), L_tir (Dale et al.
A. Boselli, Boselli, Boselli, Buat, Buat, Chary, D. Burgarella, Dale, Dale, Dale, Downes, Downes, Dunne, Fang, Franceschini, Galliano, Granato, Helou, Hirashita, Houck, J. Iglesias-Páramo, Lagache, Madden, Papovich, Sanders, Saunders, Spinoglio, T. T. Takeuchi, Takagi, Takeuchi, Takeuchi, Takeuchi, Takeuchi, Takeuchi, Takeuchi, Totani, V. Buat, Xu   +37 more
core   +7 more sources