Results 41 to 50 of about 6,318,136 (181)
General Physical Properties of Gamma-Ray-emitting Narrow-line Seyfert 1 Galaxies [PDF]
Astrophysical Journal, 2019 We present the results of a detailed multiwavelength study of a sample of 16 narrow-line Seyfert 1 (NLSy1) galaxies known in γ-rays so far. This includes a focused X-ray spectral analysis, to compare them with a more general NLSy1 population, and a ...
V. Paliya +6 more
semanticscholar +1 more source
Probing the Environment of High-z Quasars Using the Proximity Effect in Projected Quasar Pairs [PDF]
Astrophysical Journal, 2018 We have used spectra of 181 projected quasar pairs at separations ≤1.5′ from the Sloan Digital Sky Survey Data Release 12 in the redshift range of 2.5–3.5 to probe the proximity regions of the foreground quasars. We study the proximity effect both in the
P. Jalan, H. Chand, R. Srianand
semanticscholar +1 more source
Chemical enrichment and accretion of nitrogen-loud quasars [PDF]
, 2017 We present rest-frame optical spectra of 12 nitrogen-loud quasars at z ~ 2.2, whose rest-frame ultraviolet (UV) spectra show strong nitrogen broad emission lines.
K. Matsuoka +5 more
semanticscholar +1 more source
The Effect of Microlensing on the Observed X-Ray Energy Spectra of Gravitationally Lensed Quasars [PDF]
Astrophysical Journal, 2018 The Chandra observations of several gravitationally lensed quasars show evidence for flux and spectral variability of the X-ray emission that is uncorrelated between images and is thought to result from the microlensing by stars in the lensing galaxy. We
H. Krawczynski, G. Chartas, F. Kislat
semanticscholar +1 more source
psfgan: a generative adversarial network system for separating quasar point sources and host galaxy light [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 ISSN:0035 ...
Dominic Stark +9 more
openaire +5 more sources
What sparks the radio-loud phase of nearby quasars? [PDF]
, 2016 To better constrain the hypotheses proposed to explain why only a few quasars are radio loud (RL), we compare the characteristics of 1958 nearby $(z\le 0.3)$ SDSS quasars, covered by the FIRST and NVSS radio surveys.
R. Coziol +3 more
semanticscholar +1 more source
Cosmic ray and TeV gamma ray generation by quasar remnants [PDF]
AIP Conference Proceedings, 2001 Results from new broadband (radio to X-ray) high-resolution imaging studies of the dormant quasar remnant cores of nearby giant elliptical galaxies are now shown to permit the harboring of compact dynamos capable of generating the highest energy cosmic ray particles and associated curvature radiation of TeV photons.
openaire +1 more source
Epstein‐Barr Virus Expressed Long Non‐Coding RNA (lncBARTs) Regulate EBV Latent Genome Replication
Advanced Science, EarlyView.EBV produces abundant level of lncBARTs, which are essential for maintaining viral genome replication in EBV‐associated cancers. LncBARTs interact with a complex comprising BRD4, CTCF and viral protein EBNA1 at EBV oriP region. This interaction tethers oriP to host chromosomes, facilitating EBV episome replication.
Jiayan Liu +12 more
wiley +1 more source
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT Photometric reverberation mapping can detect the radial extent of the accretion disc (AD) in Active Galactic Nuclei by measuring the time delays between light curves observed in different continuum bands. Quantifying the constraints on the efficiency and accuracy of the delay measurements is important for recovering the AD size ...
F Pozo Nuñez +7 more
openaire +2 more sources
cDC1 Subtype‐Specific In Vivo Targeting of Liposomes
Advanced Science, EarlyView.Dendritic cells, particularly the cDC1 subtype, offer a promising target for drug delivery via liposomes due to their pivotal role in immune regulation, allowing for amplified therapeutic responses. Herein, we show an integration of physicochemical characterization and cell experiments to achieve effective in vivo cDC1 targeting through anti‐CLEC9A ...
Maximilian Schaaf +11 more
wiley +1 more source