Results 51 to 60 of about 494,550 (201)

Polarized Broad-Line Emission from Low-Luminosity Active Galactic Nuclei [PDF]

, 1999
In order to determine whether unified models of active galactic nuclei apply to low-luminosity objects, we have undertaken a spectropolarimetric survey of of LINERs and Seyfert nuclei at the Keck Observatory. The 14 objects observed have a median H-alpha
Aaron J. Barth, Alexei V. Filippenko, Antonucci R., Binette L., Edward C. Moran, Heckman T. M., Oliva E., Radovich M., Young S.   +8 more
core   +2 more sources

Model sensitivity across scales: a case study of simulating an offshore low-level jet [PDF]

Wind Energy Science
In this study, a seven-member ensemble of mesoscale-to-microscale simulations with varying sea surface temperature (SST) is conducted for a case in which an offshore low-level jet was observed via floating lidar.
P. Hawbecker, W. Lassman, T. W. Juliano, B. Kosović, S. E. Haupt   +4 more
doaj   +1 more source

The Choco low‐level jet: past, present and future

Climate Dynamics, 2021
The Choco low-level jet is among the main regional circulation mechanisms related to the advection of water vapor from the eastern Pacific to northwestern South America. Variations in the intensity of position of the jet core are identified as determinant for regional moisture transport and associated rainfall.
Juan P. Sierra, Paola A. Arias, Ana M. Durán-Quesada, Karina A. Tapias, Sara C. Vieira, J. Alejandro Martínez   +5 more
openaire   +3 more sources

Diffuser/ejector system for a very high vacuum environment [PDF]

, 1984
Turbo jet engines are used to furnish the necessary high temperature, high volume, medium pressure gas to provide a high vacuum test environment at comparatively low cost for space engines at sea level.
Riggs, K. E., Wojciechowski, C. J.
core   +1 more source

The Influence of the Atlantic Multidecadal Oscillation on the Choco Low-Level Jet and Precipitation in Colombia

Atmosphere, 2020
This study examines the influence of the Atlantic Multidecadal Oscillation (AMO) on the Choco Low-level Jet (CJ) variations during the 1983−2016 period.
Wilmar Loaiza Cerón, Rita Valeria Andreoli, Mary Toshie Kayano, Rodrigo Augusto Ferreira de Souza, Charles Jones, Leila M. V. Carvalho   +5 more
doaj   +1 more source

Low-level jet characteristics over the Arctic Ocean in spring and summer [PDF]

Atmospheric Chemistry and Physics, 2013
Low-level jets (LLJ) are important for turbulence in the stably stratified atmospheric boundary layer, but their occurrence, properties, and generation mechanisms in the Arctic are not well known.
L. Jakobson, T. Vihma, E. Jakobson, T. Palo, A. Männik, J. Jaagus   +5 more
doaj   +1 more source

High-redshift blazars through nustar eyes [PDF]

, 2017
The most powerful sources among the blazar family are MeV blazars. Often detected at $z>2$, they usually display high X- and \gm-ray luminosities, larger-than-average jet powers and black hole masses $\gtrsim 10^9 M_{\odot}$.
Ajello, M., Balokovic, M., Gasparrini, D., Greiner, J., Hartmann, D. H., Kaur, A., Madejski, G., Marcotulli, L., Paliya, V. S., Rau, A., Schady, P., Stern, D.   +11 more
core   +3 more sources

The South America Low-Level Jet: form, variability and large-scale forcings

npj Climate and Atmospheric Science, 2023
Northerly low-level jets (LLJ) along the eastern Andes are important conduits of moisture transport and play central roles in modulating precipitation in South America.
Charles Jones, Ye Mu, Leila M. V. Carvalho, Qinghua Ding   +3 more
doaj   +1 more source

The Spin of the Black Hole in the Soft X-ray Transient A0620--00

, 2010
During its yearlong outburst in 1975--76, the transient source A0620--00 reached an intensity of 50 Crab, an all-time record for any X-ray binary. The source has been quiescent since.
Arnaud, Cantrell, Davis, Davis, Fender, Fragile, Fragos, Gou, Kaaret, Li, Li, Liu, McClintock, McKinney, Miller, Narayan, Noble, Noble, Novikov, Penna, Predehl, Serlemitsos, Shafee, Shafee, Steiner, Steiner, Tchekhovskoy, Wilms, Zhang   +28 more
core   +1 more source

STATISTICAL ANALYSIS OF SPATIAL AND TEMPORAL VARIABILITY OF MAXIMUM PRECIPITATION EVENTS ON THE RIO GRANDE DO SUL DOI 10.5028/jatm.2012.04025811

Journal of Aerospace Technology and Management, 2012
A statistical analysis of precipitation at Rio Grande do Sul State was presented in this article. The aim of this work was to identify spatial and temporal patterns of maximum precipitation, which was achieved by fitting a theoretical variogram in ...
Cleber Souza Corrêa
doaj