Results 81 to 90 of about 16,452 (194)

High Energy Phenomena in Blazars [PDF]

open access: yes, 2001
Advances in the capabilities of X-ray, gamma-ray and TeV telescopes have brought new information on the physics of relativistic jets, which are responsible for the blazar "phenomenon".
Maraschi, Laura
core   +2 more sources

Variability in blazars

open access: yesAstroparticle Physics, 1999
The kinetic energy of bulk relativistic plasma ejected from the central engine of blazars is converted into nonthermal particle energy in the comoving frame through a process of sweeping up material from the surrounding medium. The resulting deceleration of the bulk plasma introduces a number of effects which must be included in blazar modeling.
openaire   +2 more sources

Cellular Therapy for Systemic Autoimmune Diseases: New Opportunities for Future Research and Interdisciplinary Collaboration

open access: yesACR Open Rheumatology, Volume 7, Issue 11, November 2025.
Systemic autoimmune diseases (sAIDs) affect 1 in 10 people and represent a leading cause of death in women under the age of 65 years. Despite the emergence of targeted‐biologic therapies, mortality rates for sAIDs have not improved. Emerging cellular therapies represent a promising therapeutic strategy for patients living with sAIDs given their ...
Elizabeth R. Volkmann   +4 more
wiley   +1 more source

A method for setting upper limits to the extragalactic background light with Fermi-LAT and TeV observations of blazars

open access: yes, 2010
We propose a method for setting upper limits to the extragalactic background light (EBL). Our method uses simultaneous {\em Fermi}-LAT and ground-based TeV observations of blazars and is based on the assumption that the intrinsic spectral energy ...
Abdo   +25 more
core   +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

GeV Variability Properties of TeV Blazars Detected by Fermi-LAT

open access: yesThe Astrophysical Journal Supplement Series
Variability is a prominent observational feature of blazars. The high-energy radiation mechanism of jets has always been important but is still unclear.
Gege Wang   +3 more
doaj   +1 more source

The Effect of Blazar Spectral Breaks on the Blazar Contribution to the Extragalactic Gamma-ray Background [PDF]

open access: yes, 2011
The spectral shapes of the contributions of different classes of unresolved gamma-ray emitters can provide insight into their relative contributions to the extragalactic gamma-ray background (EGB) and the natures of their spectra at GeV energies.
Abazajian   +36 more
core   +3 more sources

Two little blazars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1999
Optical polarization observations are presented of two low-luminosity flat-spectrum radio sources with optical broad lines. Both objects have significantly polarized optical continuum. The polarization is diluted by the Ha broad line, and must therefore be at least partly a continuum phenomenon.
N. Jackson, M. Marcha
openaire   +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

Chasing the Neutrino Blazar Candidates

open access: yesThe Astrophysical Journal Supplement Series
In our study of the correlations between IceCube-detected neutrino events and γ -ray properties of blazars, we recognize the inherent challenges posed by the limited detection of neutrinos.
Jingtian Zhu   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy