Results 41 to 50 of about 2,377,761 (195)

The host galaxies of flat-spectrum quasars

open access: yes, 2003
We present the results of deep VLT-ISAAC Ks-band imaging of four z∼1.5 flat-spectrum quasars selected from the Parkes half-Jansky flat spectrum sample.
McLure, RJ, Jarvis, MJ
core   +1 more source

INCIDENCE OF Mg II ABSORPTION SYSTEMS TOWARD FLAT-SPECTRUM RADIO QUASARS [PDF]

open access: yesThe Astrophysical Journal, 2012
The conventional wisdom that the rate of incidence of Mg II absorption systems, dN/dz (excluding `associated systems' having velocity beta*c relative to the AGN of less than ~5000 km/s) is totally independent of the background AGN, has been challenged by a recent finding that dN/dz for strong Mg II absorption systems towards distant blazars is 2.2 \pm_{
Chand, Hum, Gopal-Krishna
openaire   +2 more sources

Plasmonic Enhancement of Fluorescence and Protein Dynamics in Living Mammalian Cells

open access: yesAdvanced Materials, Volume 38, Issue 45, 13 August 2026.
This study demonstrates plasmonic enhancement of the function of fluorescent voltage sensing proteins (genetically encoded voltage indicators, (GEVIs), QuasAr6) in live mammalian cells. Coupling to plasmonic nanoparticles does not just increase fluorescence, but influences the protein photocycle, creating a hybrid sensor with its response speed to ...
Marco Locarno   +16 more
wiley   +1 more source

Constraints of flat spectrum radio quasars in the hadronic model: the case of 3C 273 [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
We present a method of constraining the properties of the $γ$-ray emitting region in flat spectrum radio quasars (FSRQs) in the one-zone proton synchrotron model, where the $γ$-rays are produced by synchrotron radiation of relativistic protons. We show that for low enough values of the Doppler factor $δ$, the emission from the electromagnetic (EM ...
Petropoulou, Maria   +1 more
openaire   +2 more sources

Examining Neuromuscular and Cortical Activity Over 1 Year Following Anterior Cruciate Ligament Reconstruction

open access: yesScandinavian Journal of Medicine &Science in Sports, Volume 36, Issue 8, August 2026.
ABSTRACT Cross‐sectional studies have indicated impaired neuromuscular and cortical activities following anterior cruciate ligament (ACL) reconstruction. However, adaptations throughout the recovery process remain unclear. Therefore, this study aimed to examine neuromuscular and cortical activity over the first year following ACL reconstruction.
Aglaja Busch, Frank Mayer, Heiner Baur
wiley   +1 more source

Material Strategies for Stimulation and Recording in Neural Biocomputing Platforms

open access: yesAdvanced Electronic Materials, Volume 12, Issue 14, 20 July 2026.
Material strategies enabling stimulation and recording are central to neural biocomputing systems. This review examines how electronic materials govern the encoding of inputs and decoding of outputs in living neural networks. Advances in electrical, optical, and multimodal interfaces highlight emerging design principles for biocomputing platforms ...
Sehong Kang   +5 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

Optical Spectroscopic Observations of Gamma-Ray Blazar Candidates. XII. Follow-up Observations from SOAR, Blanco, NTT, and OAN-SPM

open access: yesThe Astronomical Journal, 2023
Roughly one third of the sources in the Fermi-LAT catalogs are listed as unidentified/unassociated γ -ray sources (UGS), i.e., they lack a low-energy counterpart.
Abigail García-Pérez   +14 more
doaj   +1 more source

Modeling the Multiwavelength Spectral Energy Distributions of the Fermi-4LAC Bright Flat-spectrum Radio Quasars

open access: yesThe Astrophysical Journal
In this paper, we present a long-term multiwavelength investigation focusing on 12 distinct samples of Fermi-4LAC bright flat-spectrum radio quasars (FSRQs).
R. X. Zhou   +4 more
doaj   +1 more source

What We Talk about When We Talk about Blazars?

open access: yesFrontiers in Astronomy and Space Sciences, 2017
After the discovery of powerful relativistic jets from Narrow-Line Seyfert 1 Galaxies, and the understanding of their similarity with those of blazars, a problem of terminology was born.
Luigi Foschini
doaj   +1 more source

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