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Mostrando ítems 631-640 de 702
La región de líneas coronales en galaxias seyfert 1 y seyfert 2
(2011-09-22)
Varias muestras de espectros de galaxias Seyfert fueron analizadas con el fin de estudiar la emisión de líneas coronales (LCs). La primera muestra estuvo conformada por 54 núcleos activos con espectros en el infrarrojo ...
Estudio de la existencia de líneas coronales en galaxias Seyfert 2 a partir de una muestra del SDSS
(2019-07-25)
Estudios recientes indican que la región de emisión de líneas coronales observada en algunos núcleos galácticos activos, se localiza en la cara interna del toroide oscurecedor; sin embargo, hay numerosos ejemplos de galaxias ...
AGN spiral galaxies in groups: effects of bars
(EDP Sciences, 2014-12)
AIMS: We explore properties of barred active spiral galaxies in groups and clusters selected from the Sloan Digital Sky Survey data release 7 (SDSS-DR7), with the aim of assessing the effects of bars on active galactic ...
Detecção de neutrinos no observatório Pierre Auger
(Universidade Estadual Paulista (Unesp), 2003-03)
Faz-se aqui o estudo da detecção de neutrinos (v) de altas energias ('E IND.v' > '10 POT.9' GeV) no Observatório Pierre Auger usando os detectores de fluorescência. Introduzimos todo o conhecimento experimental dos raios ...
Half of the Most Luminous Quasars May Be Obscured: Investigating The Nature Of WISE-Selected Hot Dust-Obscured Galaxies
(IOP Publishing, 2015-05)
The Wide-field Infrared Survey Explorer mission has unveiled a rare population of high-redshift (z = 1–4.6), dusty, hyper-luminous galaxies, with infrared luminosities LIR > 10 L 13 , and sometimes exceeding 10 L 14 . ...
Understanding quasar microlensing light curves in the context of large area surveys
(Universidad Andrés Bello, 2022)
The accretion disc around the super massive black hole (SMBH) of quasars, and active galactic
nuclei (AGN) in general, is believed to be the central engine of the optical and UV continuum
we observe. AGN and their host ...
Probing Jet Launching in Neutron Star X-Ray Binaries: The Variable and Polarized Jet of SAX J1808.4-3658
(IOP Publishing Ltd., 2020-12)
We report on an optical photometric and polarimetric campaign on the accreting millisecond X-ray pulsar (AMXP) x display--inline-block" style="background: var(--highlight-yellow); color: inherit;">SAX x display--inline-block" ...
BASS. XXXIV. A Catalog of the Nuclear Millimeter-wave Continuum Emission Properties of AGNs Constrained on Scales ≤ 100-200 pc
(IOP Publishing Ltd, 2023)
We present a catalog of the millimeter-wave (mm-wave) continuum properties of 98 nearby (z < 0.05) active galactic nuclei (AGNs) selected from the 70 month Swift/BAT hard-X-ray catalog that have precisely determined X-ray ...
BASS. XXV. DR2 Broad-line-based Black Hole Mass Estimates and Biases from Obscuration
(2022)
We present measurements of broad emission lines and virial estimates of supermassive black hole masses (M _{BH} ) for a large sample of ultrahard X-ray-selected active galactic nuclei (AGNs) as part of the second data ...
General relativistic ray tracing around rotating black holes: exploring the SED parameter space for RIAF models.
(Universidad de Concepción, 2024)
En los centros galácticos activos (AGNs) podemos encontrar una diversidad de fenómenos físicos que emiten radiación electromagnética de formas muy distintas, las cuales son observables y diferenciales en distribuciones ...