Results 71 to 80 of about 20,672 (255)

Characterization of variability in blazar light curves [PDF]

open access: yes, 2020
Blazars represent dominant population of the extragalactic $\gamma$-ray sources in the Universe. These sources exhibit some characteristic properties like strong and non-thermal continuum emission over the entire electromagnetic spectrum from radio to ...
K. Singh, K. Singh, P. Meintjes
semanticscholar   +1 more source

Canonical high-power blazars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
Revised version accepted for publication in ...
Ghisellini, G., Tavecchio, F.
openaire   +2 more sources

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

Gaussian Processes for Blazar Variability Studies

open access: yesGalaxies, 2017
This article briefly introduces Gaussian processes as a new approach for modelling time series in the field of blazar physics. In the second part of the paper, recent results from an application of GP modelling to the multi-wavelength light curves of the
Vassilis Karamanavis
doaj   +1 more source

The high energy X-ray probe (HEX-P): the most powerful jets through the lens of a superb X-ray eye

open access: yesFrontiers in Astronomy and Space Sciences
A fraction of the active supermassive black holes at the centers of galaxies in our Universe are capable of launching extreme kiloparsec-long relativistic jets.
Lea Marcotulli   +29 more
doaj   +1 more source

Collagen organisation in the fibrous joint capsules in the digits of the human hand

open access: yesJournal of Anatomy, EarlyView.
The function of the finger joints is important for daily life. In this review of the literature, we consider the role of collagen and its organization within the fibrous finger joint capsules of the interphalangeal (IP) joints and investigate the relationships between collagen orientation and joint function. Abstract Normal function of the hand and, in
Fiona R. Saunders   +3 more
wiley   +1 more source

Powers and Magnetization of Blazar Jets

open access: yesGalaxies, 2016
In this work I review the observational constraints imposed on the energetics and magnetisation of quasar jets, in the context of theoretical expectations.
Marek Sikora
doaj   +1 more source

Two New Catalogs of Blazar Candidates in the WISE Infrared Sky [PDF]

open access: yesAstrophysical Journal Supplement Series, 2019
We present two catalogs of radio-loud candidate blazars whose Wide-Field Infrared Survey Explorer (WISE) mid-infrared colors are selected to be consistent with the colors of confirmed γ-ray-emitting blazars. The first catalog is the improved and expanded
R. D’abrusco   +11 more
semanticscholar   +1 more source

BLAZAR ANTI-SEQUENCE OF SPECTRAL VARIABILITY FOR INDIVIDUAL TeV BLAZARS [PDF]

open access: yesInternational Journal of Modern Physics: Conference Series, 2013
We compile from literature the broadband SEDs of twelve TeV blazars observed simultaneously or quasi-simultaneously with Fermi/LAT and other instruments. Two SEDs are available for each of the objects and the state is identified as a low or high state according to its flux density at GeV/TeV band.
Zhang, Jin   +2 more
openaire   +2 more sources

Comparative efficacy and studies of mode of action of minerals from diatoms against three species of filth flies

open access: yesMedical and Veterinary Entomology, EarlyView.
Mortality for diatomaceous earth was observed as early as 2 h after exposure with 50% and 90% mortality at 3.5 and 4.6 h (LT50 and LT90, respectively) for Musca domestica. The LT50 and LT90 increased when the size of the fly species increased (M. domestica to Cochliomyia macellaria to Sarcophaga bullata) and increased for all three from 50 to 70 ...
Grayson L. Cave   +4 more
wiley   +1 more source

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