Results 121 to 130 of about 16,751 (259)

Evaluating quasi-periodic variations in the γ-ray light curves of Fermi-LAT blazars [PDF]

open access: yesAstronomy & Astrophysics, 2019
Context. The detection of periodicities in the light curves of active galactic nuclei (AGNs) could have profound consequences for our understanding of the nature and radiation physics of these objects.
F. A. Benkhali   +10 more
semanticscholar   +1 more source

“I know what's best for my child”: A qualitative analysis of US cisgender‐heterosexual and LGBTQ parents’ perspectives on inclusive education policies

open access: yesAnalyses of Social Issues and Public Policy, Volume 25, Issue 2, August 2025.
Abstract Diversity education in the K‐12 years is a contentious issue in the contemporary US context. Given evidence that parental identity influences beliefs about and support for diversity education, we qualitatively explored cisgender‐heterosexual and LGBTQ+ parents’ (N = 609) beliefs about the appropriateness of inclusive educational policies in K ...
Flora Oswald   +3 more
wiley   +1 more source

An optical and infrared study of blazars [PDF]

open access: yes, 1988
This thesis presents a study of some of the optical and infrared properties of blazars. A review of previous observations of blazars is given. The evidence for bulk relativistic flows in quasars and blazars is also discussed.
Mead, Andrew Robert Graham
core  

The contribution of Fermi-2LAC blazars to the diffuse TeV-PeV neutrino flux [PDF]

open access: yes, 2016
The recent discovery of a diffuse cosmic neutrino flux extending up to PeV energies raises the question of which astrophysical sources generate this signal. One class of extragalactic sources which may produce such high-energy neutrinos are blazars.
I. C. M. Aartsen   +319 more
semanticscholar   +1 more source

BAT AGN Spectroscopic Survey. XVI. General Physical Characteristics of BAT Blazars [PDF]

open access: yesAstrophysical Journal, 2019
The recently released 105-month Swift-Burst Alert Telescope (BAT) all-sky hard X-ray survey catalog presents an opportunity to study astrophysical objects detected in the deepest look at the entire hard X-ray (14–195 keV) sky.
V. Paliya   +15 more
semanticscholar   +1 more source

Error climate and alienation from teachers: A longitudinal analysis in primary school

open access: yesBritish Journal of Educational Psychology, Volume 95, Issue 1, Page 41-54, March 2025.
Abstract Background Dealing with errors in the classroom is a crucial aspect of instructional quality and has multiple consequences for students' own dealing with errors, their learning and their achievement. The available literature on error climate indicates a paucity of research on the effects of perceived error climate on social aspects such as ...
Gabriele Steuer   +2 more
wiley   +1 more source

Recognizing Blazars Using Radio Morphology from the VLA Sky Survey

open access: yesThe Astrophysical Journal
Blazars are radio-loud active galactic nuclei whose jets have a very small angle to our line of sight. Observationally, the radio emissions are mostly compact or compact-core with a one-sided jet.
Zhang-Liang Xie   +6 more
doaj   +1 more source

Association of the IceCube neutrinos with CAZ blazar light curves

open access: yesAstronomy & Astrophysics
The IceCube Neutrino Observatory has detected several hundred high-energy neutrinos from cosmic sources. Despite numerous studies searching for their origin, it is still not known which sources emit them.
Kouch Pouya M.   +5 more
doaj   +1 more source

Open Universe for Blazars: a new generation of astronomical products based on 14 years ofSwift-XRT data [PDF]

open access: yesAstronomy & Astrophysics, 2019
Aims.Open Universe for Blazars is a set of high-transparency multi-frequency data products for blazar science, and the tools designed to generate them.
P. Giommi   +16 more
semanticscholar   +1 more source

EGRET (GeV) Blazars

open access: yesAIP Conference Proceedings, 2001
Invited review paper, to appear in the proceedings of the International Symposium on High Energy Gamma-Ray Astronomy, Heidelberg, June 2000, AIP Conference Proc.
openaire   +2 more sources

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