Results 31 to 40 of about 8,662 (194)
The Astrophysical Journal3C 264 is one of the few FRI radio galaxies with detected TeV emission. It is a low-luminosity active galactic nucleus (LLAGN) and is generally associated with a radiatively inefficient accretion flow (RIAF).
Ka-Wah Wong +6 more
doaj +1 more source
Modular training resources for bioimage analysis
Journal of Microscopy, EarlyView.Abstract Modern microscopy enables us to measure structural and dynamical properties of many biological processes and is therefore an indispensable research tool. However, the amount and complexity of the produced imaging data is steadily increasing.
Christian Tischer +17 more
wiley +1 more source
The Search for Very High Energy γ-rays from Misaligned AGN [PDF]
, 2013 The aim of this work is to study the potential for emission at very high energies (100 GeV) by misaligned active galactic nuclei (AGN) and the future prospects for observations of these objects with the next generation imaging atmospheric Cherenkov ...
CHEESEBROUGH, ALISTAIR
core
The Astrophysical JournalWe report on follow-up observations of the Seyfert 1.9 galaxy IC 3599 with the NASA Neil Gehrels Swift mission. The detection of a second X-ray outburst in 2010 by Swift after the first discovery of a bright X-ray outburst in 1990 by ROSAT led to the ...
Dirk Grupe, S. Komossa, Salem Wolsing
doaj +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract This study provides the first petrographic, crystallographic, and chemical comparison between El Médano 300 (EM 300) and Northwest Africa 8155 (NWA 8155), two particular IAB‐ungrouped iron meteorites. Both contain exceptionally large graphite nodules and “flowers”, providing unique insights into carbon behavior in metallic melts and cooling ...
L. Perez +8 more
wiley +1 more source
Origin of radio emission from nearby low-luminosity active galactic nuclei [PDF]
, 2005 We use the observational data in radio, optical, and X-ray wave bands for a sample of active galactic nuclei (AGNs) with measured black hole masses to explore the origin of radio emission from nearby low-luminosity active galactic nuclei (LLAGNs).
Wu, QW, Cao, XW
core
Obscured AGN at z < 1.5: X-Ray to Far-infrared SEDs and Host Galaxy Morphologies in the GOODS Fields
The Astrophysical JournalWe present an analysis of spectral energy distributions (SEDs), galaxy light profiles, and visual morphological classifications for 194 X-ray luminous active galactic nuclei (AGN) (intrinsic absorption-corrected $\mathrm{log}({L}_{{\rm{X}},0.5-7\,{\rm ...
William W.H. Jarvis +11 more
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Renaissance Studies, EarlyView.ABSTRACT During the fifteenth and sixteenth centuries, there was no statutory difference between cartography, drawing and painting. These activities were performed then by craftsmen who were part of a vast group under the umbrella of ‘mechanical arts’ and fell under the ‘artifex’ category. Artifex were experts in any particular art, whether a craftsman,
Vasco Medeiros
wiley +1 more source
Constraints on radiatively inefficient accretion history from Eddington ratio distribution of active galactic nuclei [PDF]
, 2007 The transition of a standard thin disc to a radiatively inefficient accretion flow (RIAF) is expected to occur when m similar to m(crit)(m =. M/M-Edd).
Xu, Ya-Di, Cao, Xinwu
core +1 more source
An Eddington-limited Accretion Disk Wind in the Narrow-line Seyfert 1 PG 1448+273
The Astrophysical JournalPG 1448+273 is a luminous, nearby ( z = 0.0645), narrow-line Seyfert 1 galaxy, which likely accretes close to the Eddington limit. Previous X-ray observations of PG 1448+273 with XMM-Newton in 2017 and NuSTAR in 2022 revealed the presence of an ultrafast
J. N. Reeves +7 more
doaj +1 more source