Results 151 to 160 of about 1,073,559 (305)

The simplicity of physical laws

Noûs, EarlyView.
Abstract Physical laws are strikingly simple, yet there is no a priori reason for them to be so. I propose that nomic realists—Humeans and non‐Humeans—should recognize simplicity as a fundamental epistemic guide for discovering and evaluating candidate physical laws.
Eddy Keming Chen
wiley   +1 more source

Environmental Effects in Clusters: Modified Far-Infrared--Radio Relations within Virgo Cluster Galaxies [PDF]

, 2008
(abridged) We present a study on the effects of the intracluster medium (ICM) on the interstellar medium (ISM) of 10 Virgo cluster spiral galaxies using {\it Spitzer} far-infrared (FIR) and VLA radio continuum imaging.
A. Chung, Allen, Calzetti, Condon, Crowl, Crowl, Crowl, Crutcher, Crutcher, Dale, Dale, de Jong, de Vaucouleurs, Drury, E. J. Murphy, G. Helou, Haynes, Hoernes, J. D. P. Kenney, J. H. Howell, Kenney, Kenney, Kent, Koopmann, Koopmann, Matsumoto, Miller, Moore, Moore, Murphy, Murphy, Murphy, Niklas, Niklas, Reddy, Reynolds, Rieke, Rieke, Shapley, Soida, Solanes, Strong, Tonnesen, Vollmer, Vollmer, Yun   +45 more
core   +2 more sources

Numerical modelling of the lobes of radio galaxies in cluster environments [PDF]

, 2013
We have carried out two-dimensional, axisymmetric, hydrodynamic numerical modelling of the evolution of radio galaxy lobes. The emphasis of our work is on including realistic hotgas environments in the simulations and on establishing what properties of ...
M. Hardcastle, M. Krause
semanticscholar   +1 more source

A Panchromatic View of Relativistic Jets in Narrow-Line Seyfert 1 Galaxies

Galaxies, 2016
The discovery by the Large Area Telescope on board Fermi of variable γ-ray emission from radio-loud narrow-line Seyfert 1 (NLSy1) galaxies revealed the presence of a possible third class of Active Galactic Nuclei (AGN) with relativistic jets in addition ...
Filippo D’Ammando, Monica Orienti, Justin Finke, Josefin Larsson, Marcello Giroletti, Claudia M. Raiteri   +5 more
doaj   +1 more source

Lessons from the void: What Boltzmann brains teach

Analytic Philosophy, EarlyView.
Abstract Some physical theories predict that almost all brains in the universe are Boltzmann brains, that is, short‐lived disembodied brains that are accidentally assembled as a result of thermodynamic or quantum fluctuations. Physicists and philosophers of physics widely regard this proliferation as unacceptable, and so take its prediction as a basis ...
Bradford Saad
wiley   +1 more source

The dust masses of powerful radio galaxies: clues to the triggering of their activity [PDF]

, 2014
We use deep Herschel Space Observatory observations of a 90% complete sample of 32 intermediate-redshift 2Jy radio galaxies (0.05 < z < 0.7) to estimate the dust masses of their host galaxies and thereby investigate the triggering mechanisms for their ...
Almeida, C., Dicken, D., Könyves, V., Morganti, R., Nesvadba, N., Ramos Almeida, C., Tadhunter, C., Ysard, N.   +7 more
core   +3 more sources

UNIFIED SCHEMES FOR RADIO-LOUD ACTIVE GALACTIC NUCLEI [PDF]

, 1995
The appearance of active galactic nuclei (AGN) depends so strongly on orientation that our current classification schemes are dominated by random pointing directions instead of more interesting physical properties.
C. Urry, P. Padovani
semanticscholar   +1 more source

Hunting for Paradoxes: A Research Strategy for Cognitive Science

Topics in Cognitive Science, EarlyView.
Abstract How should we identify interesting topics in cognitive science? This paper suggests that one useful research strategy is to hunt for, and attempt to resolve, paradoxes: that is, apparent or real contradictions in our understanding of the mind and of thought.
Nick Chater
wiley   +1 more source

Exploring Neutral Hydrogen in Radio MOlecular Hydrogen Emission Galaxies (MOHEGs) and Prospects with the SKA

The Astrophysical Journal
Empirical studies of cold gas content are essential for comprehending the star formation activities and evolution in galaxies. However, it is not straightforward to understand these processes because they depend on various physical properties of the ...
Sai Wagh, Mamta Pandey-Pommier, Nirupam Roy, Md Rashid, Alexandre Marcowith, Chinnathambi Muthumariappan, Ramya Sethuram, Subhashis Roy, Bruno Guiderdoni   +8 more
doaj   +1 more source

Cerebrovascular pulsatility following long duration spaceflight is associated with changes in pulse pressure and carotid artery stiffness

Experimental Physiology, EarlyView.
Abstract Central artery stiffening increases the haemodynamic pulsations transmitted downstream towards target organs, including the brain. While recent evidence suggests that long duration spaceflight is associated with reduced common carotid artery (CCA) distensibility, cerebrovascular pulsatility has not been extensively characterized in astronauts.
Roxanne Fournier, Danielle K. Greaves, J. Kevin Shoemaker, Philippe Arbeille, Richard L. Hughson, Andrew D. Robertson   +5 more
wiley   +1 more source