Results 31 to 40 of about 71,946 (109)

The Galactic Isotropic $\gamma$-ray Background and Implications for Dark Matter

, 2017
We present an analysis of the radial angular profile of the galacto-isotropic (GI) $\gamma$-ray flux--the statistically uniform flux in circular annuli about the Galactic center.
Campbell, Sheldon S., Kaplinghat, Manoj, Kwa, Anna   +2 more
core   +1 more source

Short-term spectroscopic monitoring of two cool dwarfs with strong magnetic fields

, 2009
Context: There is now growing evidence that some brown dwarfs (BDs) have very strong magnetic fields, and yet their surface temperatures are so low that the coupling is expected to be small between the matter and the magnetic field in the atmosphere.
A. Mehner, Allard, Apai, Basri, Berger, Berger, Burgasser, Burgasser, Burgasser, Burgasser, Burrows, Chabrier, Cruz, Cushing, Dahn, Dobler, Donati, E. L. Martín, E. W. Guenther, Fleming, Golimowski, Guenther, Kirkpatrick, Liebert, M. R. Zapatero Osorio, Maiti, Martín, Martín, Martín, Martín, Meyer, Mohanty, Mohanty, Mohanty, Molina, Morales-Calderón, Ménard, Nakajima, Ozawa, Preibisch, Preibisch, Reid, Reid, Rezaei, Ribas, Rutledge, Schrijver, Sengupta, Tinney, Tinney, Tinney, Tsuboi, Zapatero Osorio, Zapatero Osorio   +53 more
core   +1 more source

The T Tauri Phase Down to Nearly Planetary Masses: Echelle Spectra of 82 Very Low Mass Stars and Brown Dwarfs

, 2005
Using the largest high-resolution spectroscopic sample to date of young, very low mass stars (VLMS) and brown dwarfs (BDs), we investigate disk accretion in objects ranging from just above the hydrogen-burning limit all the way to nearly planetary masses.
Baraffe I., Bouvier J., Comeron F., D’Antona F., Gibor Basri, Martin E., Monin J.-L., Preibisch T., Ray Jayawardhana, Subhanjoy Mohanty   +9 more
core   +1 more source

Quiescent X-ray emission from an evolved brown dwarf ?

, 2004
I report on the X-ray detection of Gl569Bab. During a 25ksec Chandra observation the binary brown dwarf is for the first time spatially separated in X-rays from the flare star primary Gl569A.
B. Stelzer, Lachaume R., Neuhauser R., Pallavicini R., Radler K.-H.   +4 more
core   +1 more source

A group-theoretic approach to formalizing bootstrapping problems [PDF]

, 2011
The bootstrapping problem consists in designing agents that learn a model of themselves and the world, and utilize it to achieve useful tasks. It is different from other learning problems as the agent starts with uninterpreted observations and commands,
Censi, Andrea, Murray, Richard M.
core  

An Alternative to the BDS Test: Integration Across The Correlation Integral [PDF]

This paper extends and generalizes the BDS test presented by Brock, Dechert, Scheinkman, and LeBaron (1996). In doing so it aims to remove the limitation of having to arbitrarily select a proximity parameter by integrating across the correlation integral.
Evzen Kocenda
core  

The First Ultra-cool Brown Dwarf Discovered by the Wide-field Infrared Survey Explorer [PDF]

, 2011
We report the discovery of the first new ultra-cool brown dwarf (BDs) found with the Wide-field Infrared Survey Explorer (WISE). The object’s preliminary designation is WISEPC J045853.90+643451.9.
Beaton, R., Cushing, Michael C., Dietrich, M., Eisenhardt, P., Garnavich, P., Gelino, C. R., Jarrett, T., Kirkpatrick, J. Davy, Kuhn, O., Leisawitz, D., Mainzer, A., Marley, Mark S., Marsh, K., Masci, F., McLean, I., Padgett, D., Rueff, K., Saumon, D., Skrutskie, M., Wright, E.   +19 more
core  

Duality between Wilson Loops and Scattering Amplitudes

, 2008
We summarise the status of an intriguing new duality between planar maximally helicity violating scattering amplitudes and light-like Wilson loops in N=4 super Yang-Mills.
Henn, Johannes
core  

A Comparative Study on Hypochondriasis Among Medical and Dental Students in Post-COVID-19 Pandemic: A Cross-Sectional Study. [PDF]

Health Sci Rep
Darshan S, Bodani N, Lal A, Maqsood A, Ahmed N, Altamash S, Heboyan A.   +6 more
europepmc   +1 more source

Renshen-Baidu-San restores epithelial-immune crosstalk and drives type 2 immune repair in ulcerative colitis: an integrated multi-omics study. [PDF]

Front Immunol
Liu J, Liu X, Zhang W, Song L, Xu Y, Yang Y, Xiong P, Jia B.   +7 more
europepmc   +1 more source