Results 61 to 70 of about 1,170,090 (200)
Annalen der Physik, Volume 538, Issue 6, June 2026.This study examines slowly rotating traversable wormholes supported by string fluids whose properties change with radius. The matter smoothly shifts from a de Sitter‐like core to a string‐dominated exterior, producing a regular, horizon‐free spacetime.
A. Errehymy +5 more
wiley +1 more source
Long-term optical polarization variability of the TeV blazar 1ES 1959+650 [PDF]
, 2013 A detailed analysis of the optical polarimetric variability of the TeV blazar 1ES 1959+650 from 2007 October 18 to 2011 May 5 is presented. The source showed a maximum and minimum brightness states in the R-band of 14.08±0.03 mag and 15.20±0.03 mag ...
Raúl Mújica García
core
, 1998 4 pages, 2 figures, latex-macros memsait.sty, epsf.sty, to be published in the proceedings of the conference "Dal nano al Tera eV: tutti i colori degli AGN", third italian conference on AGNs, Roma, May 18-21 1998, Memorie S.A ...
Chiaberge, Marco, Ghisellini, Gabriele
openaire +2 more sources
NuSTAR View of TeV Blazar Mrk 501
Galaxies, 2020 We report the results of flux and spectral variability studies of all seven Nuclear Spectroscopic Telescope Array (NuSTAR) observations of TeV γ-ray emitting blazar Markarian (or Mrk) 501.
Ashwani Pandey
doaj +1 more source
British Educational Research Journal, Volume 52, Issue 3, Page 1878-1897, June 2026.Abstract This paper explores the challenges and opportunities surrounding the recruitment and retention of minority ethnic teachers in England. Drawing on interview data from 33 teachers and school leaders of diverse ethnic backgrounds, it investigates whether racialised barriers identified in earlier research have shifted in the current context of ...
Antonina Tereshchenko +5 more
wiley +1 more source
Variability of the blazar 4C 38.41 (B3 1633+382) from GHz frequencies to GeV energies* [PDF]
, 2012 Context. After years of modest optical activity, the quasar-type blazar 4C 38.41 (B3 1633+382) experienced a large outburst in 2011, which was detected throughout the entire electromagnetic spectrum, renewing interest in this source. Aims. We present the
Raúl Mújica García
core
Long term γ-ray variability of blazars [PDF]
Astronomy & Astrophysics, 2020 We used the data from the Fermi Gamma-ray Space Telescope to characterise the γ-ray flux variability of blazars on month-like time scales. Our sample consists of 1120 blazars of which 481 are flat spectrum radio quasars (FSRQs) and 639 are BL Lac objects (BL Lacs).
Bhoomika Rajput +2 more
openaire +3 more sources
Physics from Time Variability of the VHE Blazar PKS 2155-304 [PDF]
, 2010 Blazars are the principal extragalactic sources of very high energy gamma-ray emission in the Universe. These objects constitute a sub-class of Active Galactic Nuclei whose emission is dominated by Doppler boosted non-thermal radiation from plasma ...
BARRES-DE-ALMEIDA, ULISSES
core
Journal of Policy Analysis and Management, Volume 45, Issue 2, Spring 2026.ABSTRACT Recruiting teachers via “grow‐your‐own” (GYO) programs is a popular, yet rarely evaluated, strategy for addressing local workforce shortages and ensuring that incoming teachers resemble, understand, and have strong connections to their communities.
David Blazar +4 more
wiley +1 more source
Monitoring blazar variability to understand extragalactic jets [PDF]
We review the main topics in the field of blazar multiwavelength variability as a tool to understand the physics and structure of extragalactic jets and their central engine.
Raiteri, Claudia M.
core +1 more source