Results 111 to 120 of about 89,220 (323)

ULTRAFAST OUTFLOWS: GALAXY-SCALE ACTIVE GALACTIC NUCLEUS FEEDBACK [PDF]

The Astrophysical Journal, 2013
We show, using global 3D grid-based hydrodynamical simulations, that Ultra Fast Outflows (UFOs) from Active Galactic Nuclei (AGN) result in considerable feedback of energy and momentum into the interstellar medium (ISM) of the host galaxy. The AGN wind interacts strongly with the inhomogeneous, two-phase ISM consisting of dense clouds embedded in a ...
Wagner, A. Y., Umemura, M, Bicknell, Geoffrey   +2 more
openaire   +5 more sources

Infrared Photovoltaic–Battery Hybrid Systems Enabled by Colloidal Quantum Dots

Chemistry – An Asian Journal, EarlyView.
Photovoltaic–battery (PV/B) hybrid systems are key for sustainable energy but face cost and efficiency limits. Colloidal quantum dots (CQDs) enable low‐cost near‐infrared light harvesting, surpassing silicon and III–V PVs. This review analyzes CQD properties, their roles in NIR PVs and batteries, and synthesizes current research to highlight progress ...
Hong Ji, Renjun Liu, Peter Smowton, Bo Hou   +3 more
wiley   +1 more source

A Relativistic Jet in the Radio-quiet Active Galactic Nucleus Mrk 110

The Astrophysical Journal Letters
We report the discovery of a relativistic jet in Mrk 110, a narrow-line Seyfert 1 galaxy historically classified as a radio-quiet active galactic nucleus (AGN).
Ailing Wang, Tao An, Kenneth I. Kellermann, Hua Feng, Emmanuel K. Bempong-Manful, Roland Timmerman, Shaoguang Guo   +6 more
doaj   +1 more source

A Proposed Circular Economy Readiness Framework for the Rail Sector, A Literature Review and Conceptual Framework

Business Strategy and the Environment, EarlyView.
ABSTRACT The circular economy (CE) offers a transformative approach to addressing global sustainability challenges, yet few frameworks integrate it with business strategy, systems thinking (ST) and asset management (AM), especially within critical infrastructure sectors like rail. This paper conducts a comprehensive literature review to assess existing
Carl Waring, Kapila Liyanage
wiley   +1 more source

HST and LAMOST discover a dual active galactic nucleus in J0038+4128

, 2014
We report the discovery of a kiloparsec-scale dual active galactic nucleus (AGN) in J0038+4128. From the Hubble Space Telescope (HST) Wide Field Planetary Camera (WFPC2) images, we find two optical nuclei with a projection separation of 4.7 kpc (3.44 ...
Hou, Y. -H., Huang, Y., Huo, Z. -Y., Jin, G., Liu, X. -W., Xiang, M. -S., Yuan, H. -B., Zhang, Y., Zhou, X. -L.   +8 more
core   +1 more source

Galaxy Zoo: the effect of bar-driven fuelling on the presence of an active galactic nucleus in disc galaxies [PDF]

, 2015
We study the influence of the presence of a strong bar in disc galaxies which host an active galactic nucleus (AGN). Using data from the Sloan Digital Sky Survey and morphological classificationsfromtheGalaxyZoo2project,wecreateavolume ...
Melanie A. Galloway, K. Willett, L. Fortson, C. Cardamone, K. Schawinski, Edmond Cheung, C. Lintott, K. Masters, T. Melvin, B. Simmons   +9 more
semanticscholar   +1 more source

The Interstellar Medium of IRAS 08572+3915 NW: H3+ and Warm High Velocity CO

, 2006
We confirm the first detection of the molecular ion H3+ in an extragalactic object, the highly obscured ultraluminous galaxy IRAS 08572+3915 NW. We also have detected absorption lines of the fundamental band of CO in this galaxy.
B. J. McCall, Geballe T. R., M. Goto, Roche P. F., Sanders D. B., T. Oka, T. R. Geballe, T. Usuda   +7 more
core   +2 more sources

Mechanistic Understanding of Laser‐Induced Defect Engineering of Anisotropic Cobalt Oxide Spinel Platelets in Water

ChemCatChem, EarlyView.
Pulsed laser defect engineering in liquid (PUDEL) modifies anisotropic Co3O4 platelets by inducing lattice distortions and defects while enriching {111} surfaces with hydroxyl groups and tunes the catalytic activity of the Co3O4 platelets in electrocatalytic oxygen evolution and thermocatalytic selective oxidation reactions.
Dana Schellenburg, Thomas Bihnam, Carsten Placke‐Yan, Georg Bendt, Oleg Prymak, Takuma Sato, Dylan Jennings, Catalina Leiva‐Leroy, Dongsheng Zhang, Milen Nachev, Kapil Dhaka, Falonne Nkou, Ulrich Hagemann, Markus Heidelmann, Stephane Kenmoe, Kai S. Exner, Bernd Sures, Martin Muhler, Christian H. Liebscher, Alexander Schnegg, Stephan Schulz, Stephan Barcikowski, Sven Reichenberger   +22 more
wiley   +1 more source

Variabilities Driven by Satellite Black Hole Migration in Active Galactic Nucleus Disks

The Astrophysical Journal
The physical origin of active galactic nucleus (AGN) variability remains unclear. Here we propose that the magnetic reconnection induced by the migration of satellite black holes (sBHs) in the AGN disk can be a new plausible mechanism for AGN short-term ...
Jing-Tong Xing, Tong Liu, Bao-Quan Huang, Mouyuan Sun   +3 more
doaj   +1 more source

NuSTAR OBSERVATIONS OF THE COMPTON-THICK ACTIVE GALACTIC NUCLEUS AND ULTRALUMINOUS X-RAY SOURCE CANDIDATE IN NGC 5643 [PDF]

, 2015
We present two Nuclear Spectroscopic Telescope Array (NuSTAR) observations of the local Seyfert 2 active galactic nucleus (AGN) and an ultraluminous X-ray source (ULX) candidate in NGC 5643. Together with archival data from Chandra, XMM-Newton, and Swift-
A. Annuar, P. Gandhi, P. Gandhi, D. Alexander, G. Lansbury, P. Ar'evalo, D. Ballantyne, M. Baloković, F. Bauer, S. Boggs, W. Brandt, M. Brightman, F. Christensen, W. Craig, W. Craig, A. Moro, C. Hailey, F. Harrison, R. Hickox, G. Matt, S. Puccetti, C. Ricci, J. Rigby, D. Stern, D. Walton, L. Zappacosta, Will Zhang   +26 more
semanticscholar   +1 more source