Results 51 to 60 of about 1,771 (268)

Peculiar velocities of galaxies and clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
We present a simple model for the shape of the distribution function of galaxy peculiar velocities. We show how both nonlinear and linear theory terms combine to produce a distribution which has an approximately Gaussian core with exponential wings. The model is easily extended to study how the statistic depends on the type of particle used to trace ...
Sheth R. K., DIAFERIO, Antonaldo
openaire   +2 more sources

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

Complex Kinematics of Nebular Gas in Active Galaxies Centered in Cooling X-Ray Atmospheres

The Astrophysical Journal
[O ii ] emission maps obtained with the Keck Cosmic Web Imager are presented for four galaxies centered in cooling X-ray cluster atmospheres. Nebular emission extending over tens of kiloparsecs is found in systems covering a broad range of atmospheric ...
Marie-Joëlle Gingras, Alison L. Coil, B. R. McNamara, Serena Perrotta, Fabrizio Brighenti, H. R. Russell, Muzi Li, S. Peng Oh, Wenmeng Ning   +8 more
doaj   +1 more source

Saving Bambi from the mower? Using a drone with thermal camera to evaluate a low‐tech scaring technique to reduce roe deer fawn mortality during grass harvest

Wildlife Biology, EarlyView.
Roe deer is a species that hides their neonates as an anti‐predator strategy. This may prove efficient against mammalian predators, such as the red fox; however, it might be an ecological trap as large numbers of fawns are killed by tractors with harvesters each year during grass harvest.
Thomas Vogler, Neri H Thorsen, Simen Pedersen   +2 more
wiley   +1 more source

The Dark Energy Survey Supernova Program: Cosmological Biases from Host Galaxy Mismatch of Type Ia Supernovae

The Astrophysical Journal
Redshift measurements, primarily obtained from host galaxies, are essential for inferring cosmological parameters from type Ia supernovae (SNe Ia). Matching SNe to host galaxies using images is nontrivial, resulting in a subset of SNe with mismatched ...
H. Qu, M. Sako, M. Vincenzi, C. Sánchez, D. Brout, R. Kessler, R. Chen, T. Davis, L. Galbany, L. Kelsey, J. Lee, C. Lidman, B. Popovic, B. Rose, D. Scolnic, M. Smith, M. Sullivan, P. Wiseman, T. M. C. Abbott, M. Aguena, O. Alves, D. Bacon, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, J. Carretero, L. N. da Costa, M. E. S. Pereira, H. T. Diehl, P. Doel, S. Everett, I. Ferrero, J. Frieman, J. García-Bellido, G. Giannini, D. Gruen, R. A. Gruendl, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, O. Lahav, J. L. Marshall, J. Mena-Fernández, F. Menanteau, R. Miquel, R. L. C. Ogando, A. Palmese, A. Pieres, A. A. Plazas-Malagón, M. Raveri, E. Sanchez, I. Sevilla-Noarbe, M. Soares-Santos, E. Suchyta, G. Tarle, N. Weaverdyck, DES Collaboration   +60 more
doaj   +1 more source

Recurrent radio activity in active galactic nuclei

EPJ Web of Conferences, 2012
There has been a growing body of persuasive evidence to indicate that AGN activity, powered by mass accretion onto a supermassive black hole, can involve multiple episodes.
Jamrozy M.
doaj   +1 more source

Radiation‐Induced Degradation in Polymeric Materials: Alterations in Physical–Chemical Properties and Their Effects on Electrical Performance of Insulation Systems

High Voltage, EarlyView.
ABSTRACT This paper investigates the effects of radiation on polymeric materials used as insulation systems in electrical equipment such as cables for nuclear and particle accelerator applications. After a detailed description of the physics of radiation‐induced damage in the polymeric matrix, a comprehensive analysis of the physical–chemical and ...
Simone Vincenzo Suraci, Davide Fabiani
wiley   +1 more source

‘A Sort of Armed Argument’: Ireland's Civil War of Words

History, EarlyView.
Abstract This article sets out to contribute to the study of the languages of European civil wars through outlining and analysing the deployment of language as a weapon by the opposing sides of the Irish independence movement that split over the terms of the Anglo‐Irish Treaty of December 1921.
DONAL Ó DRISCEOIL
wiley   +1 more source

‘FROM GHETTO TO HABITUS FACTORY’ ROMA CAMPS IN ITALY: An Empirical Extension of Loïc Wacquant's Theorization

International Journal of Urban and Regional Research, EarlyView.
Abstract In this article we apply Wacquant's conceptualization of the ghetto to an analysis of interviews conducted with Roma people living in the state‐enforced camps of Turin, Italy. We illustrate how the elements characterizing a ghetto according to Wacquant (i.e.
Vincenzo Romania, Tommaso Bertazzo
wiley   +1 more source

The Peculiar Galaxy NGC 7714

The Astrophysical Journal, 1968
NGC 7714 galaxy emission line spectrum indicating strong excitation and velocity gradients in excited gas due to ...
Marie-Hélène Demoulin, E. Margaret Burbidge, G. R. Burbidge   +2 more
openaire   +1 more source