Zobrazeno 1 - 10
of 22
pro vyhledávání: '"F. C. Odo"'
Publikováno v:
Astronomische Nachrichten. 342:1024-1033
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a040a476595898069f9ac2103c434f2
https://doi.org/10.1002/asna.20210005
https://doi.org/10.1002/asna.20210005
In this paper we use the correlation between radio core-dominance (R) and Linear size (D) properties of a sample of AGN (ESSs and FSRQs) to investigate the beaming hypothesis and orientation effects in AGNs. The distributions give mean values of D of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2047c073ed8a2d4709e9689423162c55
https://doi.org/10.21203/rs.3.rs-1702446/v1
https://doi.org/10.21203/rs.3.rs-1702446/v1
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 502:300-312
The relationship between coronal mass ejections (CMEs) and Forbush decreases (FDs) has been investigated in the past. But the selection of both solar events are difficult. Researchers have developed manual and automated methods in efforts to identify
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::423e26b8d1e0f0084f0c829e09312c6e
https://doi.org/10.1093/mnras/staa4002
https://doi.org/10.1093/mnras/staa4002
We present statistical analyses of a large homogenous data sample of Fermi-detected blazars thoroughly studied in order to reassess the relationship between flat-spectrum radio quasars (FSRQs) and subclasses of BL Lacertae objects (BL Lacs) blazar po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2c2094b40c1aa3e056f9d05ac8183a4
http://arxiv.org/abs/2107.12645
http://arxiv.org/abs/2107.12645
Publikováno v:
The European Physical Journal Plus. 136
We use the anti-correlation between arm-length ratio (Q) and flux density ratio (F) as asymmetry parameters to investigate the effects of environment on observed structural asymmetries in extragalactic radio sources. In a density variation model (DVM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9757539ea2c9a213191e13c88fc2335
https://doi.org/10.1140/epjp/s13360-021-01475-z
https://doi.org/10.1140/epjp/s13360-021-01475-z
Publikováno v:
Astrophysics and Space Science. 366
The distribution of radio core-dominance is consistent with average projection angles of 13.5, 14.8, 16.8, 20.4, and 28.2 for ISPs, LSPs, FSRQs, HSPs, and radio galaxies, respectively. Linear regression analyses of our data yield significant anti-cor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b1604fe1378832a2c47e74130b9492a
https://doi.org/10.1007/s10509-021-03946-2
https://doi.org/10.1007/s10509-021-03946-2
Autor:
Nana Ama Browne Klutse, Margaret Ikape, Wolfgang Kerzendorf, Allison W. S. Man, Cheikh Tidiane Bop, Sarah Abotsi-Masters, R.N.C. Eze, Adaeze Ibik, Sudum Esaenwi, Anabele-Linda Pardi, Chukwujekwu Nworah Ofodum, Wesley Cheek, Kelly Lepo, Heidi A. White, Linda E. Strubbe, Bernard Duah Asabere, Jielai Zhang, Sara Webb, F. C. Odo, Meiling Deng, Johnson Ozoemena Urama, Daniel Odoh, Nnaemeka Dom Onyeuwaoma, Patrice M. Okouma, James O. Chibueze, Alison Rose, Bonaventure Okere, Thai Duy Cuong Nguyen, Lamiya Mowla
Publikováno v:
Nature Astronomy
Nature Astronomy, 2021, 5 (3), pp.217-220. ⟨10.1038/s41550-021-01301-7⟩
Nature Astronomy, Nature Publishing Group, 2021, 5 (3), pp.217-220. ⟨10.1038/s41550-021-01301-7⟩
Nature Astronomy, 2021, 5 (3), pp.217-220. ⟨10.1038/s41550-021-01301-7⟩
Nature Astronomy, Nature Publishing Group, 2021, 5 (3), pp.217-220. ⟨10.1038/s41550-021-01301-7⟩
International audience; The Pan-African School for Emerging Astronomers (PASEA) is an innovative short course for African university students, held by an African-led international collaboration. PASEA aims to build a critical mass of astronomers in A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14d1550c4709f0baf89a56445a87f57f
https://hal.science/hal-03165357
https://hal.science/hal-03165357
Our understanding of the unification of jetted AGNs has advanced greatly as the size of extragalactic sources increased. In the present paper, based on the large sample of radio sources, we compiled 680 blazars (279 FSRQs and 401 BL Lacs) from the 3F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a213ff79b57cf9653dc7b7cbc99a8d78
Publikováno v:
Open Astronomy, Vol 29, Iss 1, Pp 168-178 (2020)
We use the distributions of spectral indices of a large homogenous sample of Fermi-detected blazars to re-investigate the relationship between flat spectrum radio quasars (FSRQs) and subclasses of BL Lac objects (BL Lacs). We compute the broadband sy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::105ccc6f0e2cde40823197e7be36782f
http://arxiv.org/abs/2007.08968
http://arxiv.org/abs/2007.08968
Autor:
F. C. Odo, B. E. Aroh
Publikováno v:
Journal of Astrophysics and Astronomy. 41
We study the distributions of $$\gamma $$ -ray properties of a sample of $$\gamma $$ -ray loud blazars taken from the third catalogue of blazars detected by Fermi-Large Area Telescope (Fermi-LAT). We compute the $$\gamma $$ -ray dominance ( $$D_{\mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80d4f9c49dc2ceb2b9a0a991951fa7a9
https://doi.org/10.1007/s12036-020-9626-x
https://doi.org/10.1007/s12036-020-9626-x