Zobrazeno 1 - 10
of 236
pro vyhledávání: '"James R. Webb"'
Autor:
James R. Webb, Ivan Parra Sanz
Publikováno v:
Galaxies, Vol 11, Iss 6, p 108 (2023)
We present the results of an in-depth analysis of the Whole Earth Blazar Telescope (WEBT) micro-variability observations made during a campaign done in 2020 on the blazar BL Lacertae. The data consisted of 231 days of optical imaging and we separated
Externí odkaz:
https://doaj.org/article/001b8b7eba2643378e1b3cf8d302a1f1
Autor:
James R. Webb, Viviana Arroyave, Douglas Laurence, Stephen Revesz, Gopal Bhatta, Hal Hollingsworth, Sarah Dhalla, Emily Howard, Michael Cioffi
Publikováno v:
Galaxies, Vol 9, Iss 4, p 114 (2021)
We present the results of a long-term study designed to investigate the nature of micro-variability in blazars carried out primarily at the Southeastern Association for Research in Astronomy (SARA) observatories. We analyzed micro-variability data of
Externí odkaz:
https://doaj.org/article/da1e0a6fbaf948e0bc9075917a88a21e
Autor:
James R. Webb
Publikováno v:
Galaxies, Vol 9, Iss 4, p 69 (2021)
I outline the history of and progress in observing and understanding quasar multi-frequency and multi-messenger variability from the point of view of someone who has been working in the field for over 30 years. I will present some important reference
Externí odkaz:
https://doaj.org/article/3faa397f67444a53899ba7d47571a6f3
Publikováno v:
Galaxies, Vol 5, Iss 4, p 77 (2017)
A critical observation for testing the KRM jet model, in development at FIU, is to observe high time resolution, high accuracy photometry and polarimetry over a wide range of frequencies in the optically thin portion of the synchrotron spectrum. The
Externí odkaz:
https://doaj.org/article/688a99233398474a90814be0090471f7
Publikováno v:
The Scientific World Journal, Vol 1, Pp 539-547 (2001)
Long-term watershed research conducted in Shenandoah National Park (SNP) in Virginia and elsewhere in the eastern U.S. indicates that annual export of dissolved nitrogen (N) from gaged forested watersheds to surface waters increases dramatically in r
Externí odkaz:
https://doaj.org/article/db7cee3277d842f9ad34e69961686dee
Autor:
James R. Webb
Publikováno v:
Galaxies, Vol 4, Iss 3, p 15 (2016)
For the past 12 years we have been studying optical micro-variability of a sample of 15 Blazars. We summarize the results of this study and draw some basic conclusions about the characteristics of micro-variability. The intermittency, the stochastic
Externí odkaz:
https://doaj.org/article/3ff9e4f69a644543838058c63a301d10
Autor:
Douglas P. Beall, Jordan E. Brasuell, Andrew W. Favre, Brooks M. Koenig, M. Ali Khan, Edward S. Yoon, Trevor R. Magee, Drake Stockard, Joseph D. Kinsinger, Saad A. Khan, William H. Eskew, James R. Webb
Publikováno v:
Complications of Pain‐Relieving Procedures. :298-328
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b8f4749f455711fd1de0205cd03b92a
https://doi.org/10.1002/9781119757306.ch38
https://doi.org/10.1002/9781119757306.ch38
Autor:
Alex G Markowitz, Krzysztof Nalewajko, Gopal Bhatta, Gulab C Dewangan, Sunil Chandra, Daniela Dorner, Bernd Schleicher, Urszula Pajdosz-Śmierciak, Łukasz Stawarz, Staszek Zola, Michał Ostrowski, Daniele Carosati, Saikruba Krishnan, Rumen Bachev, Erika Benítez, Kosmas Gazeas, David Hiriart, Shao-Ming Hu, Valeri Larionov, Alessandro Marchini, Katsura Matsumoto, A A Nikiforova, Tapio Pursimo, Claudia M Raiteri, Daniel E Reichart, Diego Rodriguez, Evgeni Semkov, Anton Strigachev, Yuki Sugiura, Massimo Villata, James R Webb, Axel Arbet-Engels, Dominik Baack, Matteo Balbo, Adrian Biland, Thomas Bretz, Jens Buss, Laura Eisenberger, Dominik Elsaesser, Dorothee Hildebrand, Roman Iotov, Adelina Kalenski, Karl Mannheim, Alison Mitchell, Dominik Neise, Maximilian Noethe, Aleksander Paravac, Wolfgang Rhode, Vitalii Sliusar, Roland Walter
The study of short-term variability properties in AGN jets has the potential to shed light on their particle acceleration and emission mechanisms. We report results from a four-day coordinated multi-wavelength campaign on the highly-peaked blazar (HB
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::276b4fb77984a9025dafc14f4ea505ee
http://arxiv.org/abs/2206.03874
http://arxiv.org/abs/2206.03874
Autor:
James R Webb
Publikováno v:
Extragalactic Astrophysics ISBN: 9781681744094
Extragalactic Astrophysics
Extragalactic Astrophysics
This book is intended to be a course about the creation and evolution of the universe at large, including the basic macroscopic building blocks (galaxies) and the overall large-scale structure. This text covers a broad range of topics for a graduate-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e834e00d9fee012b4d9f6d492e27390
https://doi.org/10.1088/978-0-7503-3551-5ch4
https://doi.org/10.1088/978-0-7503-3551-5ch4