Results 91 to 100 of about 288,656 (295)

Nano‐Topography Enhanced Topological‐Cell‐Analysis in Radiation‐Therapy

open access: yesAdvanced Healthcare Materials, EarlyView.
Radiotherapy, a treatment that implies exposition of cells to radiation, offers promise to treat cancer. Here, it is hypothesized that the nanoscale details of a scaffold can amplify the response of cells to radiation, measured through topological variables, providing ways to assess the efficacy of Radiotherapy treatment.
Francesca Pagliari   +8 more
wiley   +1 more source

DETAILED SHAPE AND EVOLUTIONARY BEHAVIOR OF THE X-RAY LUMINOSITY FUNCTION OF ACTIVE GALACTIC NUCLEI [PDF]

open access: yes, 2015
We construct the rest-frame 2–10 keV intrinsic X-ray luminosity function (XLF) of active galactic nuclei (AGNs) from a combination of X-ray surveys from the all-sky Swift BAT survey to the Chandra Deep Field South.
T. Miyaji   +21 more
semanticscholar   +1 more source

The Halo Occupation Distribution Modeling of X-Ray-selected Active Galactic Nuclei at 0.6 < z < 2.6 in the COSMOS Field

open access: yesThe Astrophysical Journal
We conduct precise measurements of active galactic nucleus (AGN) clustering at z ∼ 1 and z ∼ 2 by measuring the two-point cross-correlation function (CCF) between galaxies and X-ray-selected AGNs, and the two-point autocorrelation function (ACF) of ...
Hiroyuki Ikeda   +8 more
doaj   +1 more source

X-Ray Polarization Observations of BL Lacertae

open access: yesThe Astrophysical Journal Letters, 2022
Blazars are a class of jet-dominated active galactic nuclei with a typical double-humped spectral energy distribution. It is of common consensus that the synchrotron emission is responsible for the low frequency peak, while the origin of the high ...
Riccardo Middei   +146 more
doaj   +1 more source

On Radio and X-ray Emission Mechanisms in Nearby, X-ray Bright Galactic Nuclei [PDF]

open access: yes, 1999
It has been suggested that advection-dominated accretion flows (ADAFs) are responsible for the X-ray activity in nearby galactic nuclei. These X-ray bright galactic nuclei (XBGN) are a heterogeneous group which includes LINERs, low to moderate luminosity Seyferts, and narrow-line X-ray galaxies with 2-10 keV X-ray luminosities in the range ~10**39 to ...
arxiv   +1 more source

The X-Ray Coronae in NuSTAR Bright Active Galactic Nuclei

open access: yesThe Astrophysical Journal, 2022
Abstract We present a systematic and uniform analysis of NuSTAR data of a sample of 60 SWIFT BAT-selected AGNs with 10–78 keV signal-to-noise ratio (S/N) > 50, 10 of which are radio loud. We measure their high-energy cutoff E cut or coronal temperature T e using three different spectral models to ...
Jia-Lai Kang, Jun-Xian Wang
openaire   +2 more sources

4D Biofabrication of Magnetically Augmented Callus Assembloid Implants Enables Rapid Endochondral Ossification via Activation of Mechanosensitive Pathways

open access: yesAdvanced Science, EarlyView.
Magnetically augmented biohybrid cartilaginous microtissues enable remote microtissue motion control and assembly as well as targeted differentiation. This study demonstrates accelerated endochondral ossification under magnetic stimulation, highlighting cartilaginous assembloid constructs’ ability to retain long‐term magnetic properties.
Konstantinos Ioannidis   +13 more
wiley   +1 more source

Bolometric luminosities and Eddington ratios of X-ray selected active galactic nuclei in the XMM-COSMOS survey [PDF]

open access: yes, 2012
Bolometric luminosities and Eddington ratios of both X-ray selected broad-line (Type-1) and narrow-line (Type-2) active galactic nuclei (AGN) from the XMM–Newton survey in the Cosmic Evolution Survey field are presented. The sample is composed of 929 AGN
E. Lusso   +28 more
semanticscholar   +1 more source

Features of the X-ray spectra of active galactic nuclei Mrk 1498

open access: yesВісник Астрономічної школи, 2013
We present results of our analysis of the XMM-Newton and Swift observations of the galaxy with Sy 1.9 active nucleus Mrk 1498. We analyze the spectra obtained from three EPIC cameras (PN and both MOS) within the 0.2–12 keV energy range and Swift/BAT ...
A. A. Vasylenko   +2 more
doaj   +1 more source

Design and tests of the hard X-ray polarimeter X-Calibur [PDF]

open access: yes, 2011
X-ray polarimetry promises to give qualitatively new information about high-energy astrophysical sources, such as binary black hole systems, micro-quasars, active galactic nuclei, and gamma-ray bursts.
Baring, M. G.   +19 more
core   +4 more sources

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