Results 141 to 150 of about 89,220 (323)

EVIDENCE FOR WIDE-SPREAD ACTIVE GALACTIC NUCLEUS-DRIVEN OUTFLOWS IN THE MOST MASSIVE z ∼ 1–2 STAR-FORMING GALAXIES [PDF]

, 2014
In this paper, we follow up on our previous detection of nuclear ionized outflows in the most massive (log(M*/M☉) ⩾ 10.9) z ∼ 1–3 star-forming galaxies by increasing the sample size by a factor of six (to 44 galaxies above log(M*/M☉) ⩾ 10.9) from a ...
R. Genzel, N. F. Schreiber, D. Rosario, P. Lang, D. Lutz, E. Wisnioski, E. Wuyts, S. Wuyts, K. Bandara, R. Bender, S. Berta, J. Kurk, J. Mendel, L. Tacconi, D. Wilman, A. Beifiori, G. Brammer, A. Burkert, P. Buschkamp, J. Chan, C. Carollo, R. Davies, F. Eisenhauer, M. Fabricius, M. Fossati, M. Kriek, S. Kulkarni, S. Lilly, C. Mancini, I. Momcheva, T. Naab, E. Nelson, A. Renzini, R. Saglia, R. Sharples, A. Sternberg, S. Tacchella, P. V. Dokkum   +37 more
semanticscholar   +1 more source

Limits from rapid TeV variability of Mrk 421

, 1997
The extreme variability event in the TeV emission of Mrk 421, recently reported by the Whipple team, imposes the tightest limits on the typical size of the TeV emitting regions in Active Galactic Nuclei (AGN).
Celotti, A., Fabian, A. C., Rees, M. J.
core   +1 more source

Structural and Dynamic Origins of Payne Effect Reduction by Steric Stabilization in Silica Reinforced Poly(butadiene) Nanocomposites

Polymer Composites, EarlyView.
Steric stabilisation of silica nanoparticles suppresses the Payne effect in poly(butadiene) nanocomposites and enables the thickness of the glassy layer to be quantified with QENS experiments. ABSTRACT Silica nanoparticles in polybutadiene nanocomposites cause significantly hindered polymer dynamics in the form of a glassy layer, which can extend more ...
James M. Hart, W. Douglas Carswell, Victoria García‐Sakai, Bernhard Frick, Stephen C. Boothroyd, Lian R. Hutchings, Nigel Clarke, Richard L. Thompson   +7 more
wiley   +1 more source

Active Galactic Nucleus Jet-inflated Bubbles as Possible Origin of Odd Radio Circles

The Astrophysical Journal
Odd radio circles (ORCs) are newly discovered extragalactic radio objects with an unknown origin. In this work, we carry out three-dimensional cosmic-ray (CR) magnetohydrodynamic simulations using the FLASH code and predict the radio morphology of end-on
Yen-Hsing Lin, H.-Y. Karen Yang
doaj   +1 more source

Quantifying the Active Galactic Nucleus Fraction in Cosmic Voids via Mid-infrared Variability

The Astrophysical Journal
Observations and theoretical simulations suggest that the large-scale environment plays a significant role in how galaxies form and evolve and, in particular, whether and when galaxies host an actively accreting supermassive black hole in their center (i.
Anish S. Aradhey, Anca Constantin, Michael S. Vogeley, Kelly A. Douglass   +3 more
doaj   +1 more source

Dissecting Photometric Redshift for Active Galactic Nucleus Using XMM- and Chandra-COSMOS Samples [PDF]

, 2011
In this paper, we release accurate photometric redshifts for 1692 counterparts to Chandra sources in the central square degree of the Cosmic Evolution Survey (COSMOS) field. The availability of a large training set of spectroscopic redshifts that extends
Capak, P., Kakazu, Y., Manohar, S., Masters, D., Salvato, M., Scoville, N., Shopbell, P.   +6 more
core  

Unfolding the Network Structure of [Pyr14Cl/(BCl3)0.25]/(δ‐MgCl2)x Ionic Liquid Using the BCl4− Probe

Small Structures, EarlyView.
The network structure of ionic liquid‐based electrolytes doped with δ‐MgCl2 is unveiled using the BCl4− molecular probe. A comprehensive approach, including DFT, Fourier transform infrared, broadband electrical spectroscopy, and nuclear magnetic resonance studies, reveals the interplay between anionic and cationic domains, demonstrating enhanced ...
Gioele Pagot, Mounesha N. Garaga, Keti Vezzù, Boris Itin, Steven G. Greenbaum, Vito Di Noto   +5 more
wiley   +1 more source

How Quasar Feedback May Shape the Co-evolutionary Paths

Frontiers in Astronomy and Space Sciences, 2017
Observations point toward some form of “co-evolutionary sequence,” from dust-enshrouded starbursts to luminous unobscured quasars. Active galactic nucleus (AGN) feedback is generally invoked to expel the obscuring dusty gas in a blow-out event ...
Wako Ishibashi
doaj   +1 more source

A patient‐derived orthotopic xenograft model unveils metastatic dynamics in head and neck squamous cell carcinoma

The FEBS Journal, EarlyView.
Metastasis in head and neck squamous cell carcinoma (HNSC) poses significant clinical challenges. This proof‐of‐concept study establishes patient‐derived orthotopic xenografts (PDOXs) as advanced models that closely replicate primary HNSC tumours, including local lymph node metastasis and the intricate cancer–stroma interaction.
Yuchen Bai, Benjamin Blyth, Jarryd Boath, Qiji Deng, Ruihong Huang, Charbel Darido   +5 more
wiley   +1 more source

The Contribution of Turbulent Active Galactic Nucleus Coronae to the Diffuse Neutrino Flux

The Astrophysical Journal
Active galactic nuclei (AGN) can accelerate protons to energies of ∼10–100 TeV, with secondary production of high-energy neutrinos. If the acceleration is driven by magnetized turbulence, the main properties of the resulting proton and neutrino spectra ...
Damiano F. G. Fiorillo, Luca Comisso, Enrico Peretti, Maria Petropoulou, Lorenzo Sironi   +4 more
doaj   +1 more source