Results 71 to 80 of about 1,919 (235)
Adverse Outcome Pathways Applied to Space Radiation Research
Environmental and Molecular Mutagenesis, EarlyView.ABSTRACT Long‐duration spaceflight exposes astronauts to various stressors that can alter human physiology, potentially causing immediate and long‐term health effects. These stressors can damage biomolecules, cells, tissues, and organs, leading to adverse outcomes.
Vinita Chauhan +18 more
wiley +1 more source
The Astrophysical Journal Supplement Series, 2022 Virial black hole (BH) mass ( M _BH ) determination directly involves knowing the broad-line region (BLR) clouds’ velocity distribution, their distance from the central supermassive BH ( R _BLR ), and the virial factor ( f ). Understanding whether biases
Federica Ricci +26 more
doaj +1 more source
The Astrophysical JournalWe present a detailed analysis of the most luminous and obscured active galactic nuclei (AGNs) detected in the ultra-hard X-ray band (14–195 kev) by the Swift/Burst Alert Telescope. Our sample comprises 21 X-ray luminous ( ${\mathrm{log}}\,{L}_{{\rm{X}}}/
Alessandro Peca +23 more
doaj +1 more source
The ratio of X-ray-to-optical luminosity for active galactic nuclei [PDF]
Monthly Notices of the Royal Astronomical Society, 1984 On montre que le renforcement apparent du rapport moyen des luminosites RX a optique des noyaux de Seyfert 1, en comparaison avec les QSO radio calmes, peut etre largement, sinon totalement, du a un rougissement interne.
CHENG FZ +3 more
openaire +3 more sources
From cells to pixels: A decision tree for designing bioimage analysis pipelines
Journal of Microscopy, EarlyView.Abstract Bioimaging has transformed our understanding of biological processes, yet extracting meaningful information from complex datasets remains a challenge, particularly for biologists without computational expertise. This paper proposes a simple general approach, to help identify which image analysis methods could be relevant for a given image ...
Elnaz Fazeli +4 more
wiley +1 more source
NuSTAR Detection of an Absorption Feature in ESP 39607: Evidence for an Ultrafast Inflow?
The Astrophysical JournalWe report the serendipitous discovery of an absorption feature at 4.8 keV in the NuSTAR spectra of ESP 39607, a Seyfert 2 galaxy at z = 0.201, observed in 2023 May and 2024 August. The feature is detected in both observations with individual significance
Alessandro Peca +6 more
doaj +1 more source
X-Ray Polarization Observations of BL Lacertae
The 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
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
The Astrophysical JournalCompton-thick active galactic nuclei (CT-AGNs), which are defined by column density N _H ≥ 1.5 × 10 ^24 cm ^−2 , emit feeble X-ray radiation, even undetectable by X-ray instruments.
Rui Zhang +9 more
doaj +1 more source
Active Galactic Nuclei with High-Resolution X-Ray Spectroscopy
, 2023 Invited review chapter for the book High-Resolution X-Ray Spectroscopy: Instrumentation, Data Analysis, and Science (Eds. C. Bambi and J. Jiang, Springer Singapore, expected in 2023).
Gallo, Luigi C. +2 more
openaire +2 more sources