Results 31 to 40 of about 41,993 (168)

X-Ray Flares of Gamma-Ray Bursts: Quakes of Solid Quark Stars?

, 2008
We propose a star-quake model to understand X-ray flares of both long and short Gamma-ray bursts (GRBs) in a solid quark star regime. Two kinds of central engines for GRBs are available if pulsar-like stars are actually (solid) quark stars, i.e., the SNE-
A. B. Chen, A. D. Falcone, A. King, A. M. Beloborodov, A. M. Soderberg, A. Panaitescu, A. Zeh, B. B. Zhang, B. B. Zhang, B. Paczynski, B. Thomsen, B. Zhang, B. Zhang, C. Kouveliotou, C. Peng, D. B. Fox, D. Eichler, D. N. Burrows, D. Proga, E. Berger, E. Nakar, E. W. Liang, E. W. Liang, E. W. Liang, EnWei Liang, F. Weber, G. Chincarini, J. Goodman, J. Hjorth, J. Hjorth, J. Horvath, J. S. Bloom, J. S. Villasenor, K. S. Cheng, L. X. Li, L. X. Li, N. Gehrels, N. Gehrels, N. Itoh, N. R. Butler, P. Kumar, P. Meszaros, P. Meszaros, R. Narayan, R. Narayan, R. Perna, R. Willingale, R. X. Xu, R. X. Xu, R. X. Xu, R. X. Xu, R. X. Xu, RenXin Xu, S. A. Colgate, S. Campana, S. D. Barthelmy, S. E. Woosley, S. E. Woosley, S. Rosswog, T. J. Galama, X. H. Cui, X. Y. Wang, X. Y. Wang, Y. Z. Fan, Z. G. Dai   +64 more
core   +1 more source

Determinants of Improved Dyspnea and Exercise Tolerance With Nasal High‐Flow O2 Therapy in Fibrotic Interstitial Lung Disease: A Pilot Physiological Study

Respirology, EarlyView.
We tested the respective effect of high‐flow and supplemental O2 from nasal high‐flow O2 therapy (NHFO2) on dyspnea and exercise tolerance in fibrotic interstitial lung disease. Supplemental O2 and NHFO2 (but not high‐flow) provided improvements in these outcomes at “iso‐O2 saturation” due to reduced ventilatory requirements.
Sarah Thivent, Marylise Ginoux, Samuel Verges, Frédéric Hérengt, Mathieu Marillier   +4 more
wiley   +1 more source

Hybrid quark stars with quark-quark phase transitions

Physical Review D
13 pages, 7 figures; updated version with possible signatures of gravitational wave ...
Zongcan Yang, Tianxiong Zeng, Yan Yan, Wen-Li Yuan, Chen Zhang, Enping Zhou   +5 more
openaire   +2 more sources

QUARK-CLUSTER STARS: THE STRUCTURE

International Journal of Modern Physics: Conference Series, 2013
The nature of pulsar-like compact stars is still in controversy although the first pulsar was found more than 40 years ago. Generally speaking, conventional neutron stars and non-mainstream quark stars are two types of models to describe the inner structure of pulsars, with the former composed mainly of hadrons and the latter of a peculiar kind of ...
Lai, Xiaoyu, Xu, Renxin
openaire   +2 more sources

Holographic Quark Matter and Neutron Stars [PDF]

Physical Review Letters, 2016
We use a top-down holographic model for strongly interacting quark matter to study the properties of neutron stars. When the corresponding Equation of State (EoS) is matched with state-of-the-art results for dense nuclear matter, we consistently observe a first order phase transition at densities between two and seven times the nuclear saturation ...
Hoyos, Carlos, Jokela, Niko, Rodriguez Fernandez, David, Vuorinen, Aleksi   +3 more
openaire   +4 more sources

Quark stars: features and findings [PDF]

The European Physical Journal C, 2006
Under extreme conditions of temperature and/or density, quarks and gluons are expected to undergo a deconfinement phase transition. While this is an ephemeral phenomenon at the ultra-relativistic heavy-ion collider (BNL-RHIC), quark matter may exist naturally in the dense interior of neutron stars.
openaire   +2 more sources

Neutron stars and the transition to color-superconducting quark matter

, 2003
We explore the relevance of color superconductivity inside a possible quark matter core for the bulk properties of neutron stars. For the quark phase we use an Nambu--Jona-Lasinio (NJL) type model, extended to include diquark condensates.
Alford, Alford, Alford, Alford, Alford, Baldo, Baldo, Baldo, Baldo, Baldo, Bedaque, Blaschke, Buballa, Buballa, Carlson, F. Neumann, G.F. Burgio, Glendenning, H.-J. Schulze, Huang, Hulse, Lacombe, M. Baldo, M. Buballa, M. Oertel, Maessen, Neumann, Rajagopal, Rapp, Rehberg, Schertler, Schiavilla, Shovkovy, Song, Song, Steiner, Steiner, Vidaña   +37 more
core   +3 more sources

Disproportional ventilatory response to incremental exercise in individuals with cerebral palsy

Developmental Medicine &Child Neurology, EarlyView.
Individuals with cerebral palsy demonstrate a disproportionate ventilatory response during incremental exercise. Compared with typically developing peers, respiratory frequency increases earlier and at comparable exercise intensities, contributing to higher perceived exertion and reduced ventilatory efficiency. At task failure, respiratory frequency is
Linnéa Corell, Emma Hjalmarsson, Rodrigo Fernandez‐Gonzalo, Annika Kruse, Sebastian Edman, Asta Kizyte, Rouli Wang, Arnoud Edelman Bos, Peder Sörensson, Eva Pontén, Petra E. M. van Schie, Annemieke I. Buizer, Jessica Norrbom, Daniele A. Cardinale, Ferdinand von Walden   +14 more
wiley   +1 more source

QUARK MATTER IN MASSIVE COMPACT STARS [PDF]

The Astrophysical Journal, 2011
The recent observation of the pulsar PSR J1614-2230 with a mass of 1.97 +/- 0.04 M_sun gives a strong constraint on the quark and nuclear matter equations of state (EoS). We explore the parameter ranges for a parameterized EoS for quark stars. We find that strange stars, made of absolutely stable strange quark matter, comply with the new constraint ...
S. Weissenborn, I. Sagert, PAGLIARA, Giuseppe, M. Hempel, J. Schaffner Bielich   +4 more
openaire   +3 more sources

Quark-hybrid matter in the cores of massive neutron stars [PDF]

, 2012
Using a nonlocal extension of the SU(3) Nambu-Jona Lasinio model, which reproduces several of the key features of Quantum Chromodynamics, we show that mixed phases of deconfined quarks and confined hadrons (quark-hybrid matter) may exist in the cores of ...
Contrera, G. A., Orsaria, M., Rodrigues, H., Weber, F.   +3 more
core   +2 more sources