Results 21 to 30 of about 4,523 (219)
Oscillations of rapidly rotating superfluid stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 Using time evolutions of the relevant linearised equations we study non-axisymmetric oscillations of rapidly rotating and superfluid neutron stars. We consider perturbations of Newtonian axisymmetric background configurations and account for the presence of superfluid components via the standard two-fluid model. Within the Cowling approximation, we are
Passamonti, A. +2 more
openaire +3 more sources
On the oscillation spectra of ultra compact stars [PDF]
Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences, 1995 Abstract Quasi-normal modes of ultra compact stars with uniform energy density have been calculated. For less compact stars, there is only one very slowly damped polar mode (corresponding to the Kelvin f-mode) for each spherical harmonic index l.
Kojima, Yasufumi +2 more
openaire +2 more sources
Search for Oscillations in Some Ap Stars [PDF]
Symposium - International Astronomical Union, 1988 Photometric observations of some Ap stars with a 50 cm telescope have been carried out at Izaña (Tenerife) in February 1986. The stars observed were, generally, magnetic - cool Ap stars. A search for global oscillations in the range 3 to 15 minutes has been undertaken and they seem to be present in some of the stars observed.
J.A. Belmonte +2 more
openaire +1 more source
Solar‐like oscillations in cluster stars [PDF]
Astronomische Nachrichten, 2010 AbstractWe present a brief overview of the history of attempts to obtain a clear detection of solar‐like oscillations in cluster stars, and discuss the results on the first clear detection, which was made by the Kepler Asteroseismic Science Consortium (KASC) Working Group 2 (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Stello, D. +23 more
openaire +4 more sources
Oscillating Star Formation [PDF]
Symposium - International Astronomical Union, 1986 As a consequence of positive feedback effects in interstellar chemical and star forming processes, a star formation region may undergo nonlinear oscillations.
openaire +1 more source
Discrimination of Quark Stars from Neutron Stars in Quadrupole Oscillations [PDF]
Progress of Theoretical Physics, 2002 The frequencies and damping times due to gravitational radiation are calculated for self-bound quark star models. The results are compared with those for neutron star models. They are markedly contrasted in less relativistic cases. The distinction derived here from a simple model of quark stars may be relevant to the future theoretical and ...
Kojima, Yasufumi, Sakata, Koh-ichi
openaire +2 more sources
Radial oscillations of viscous stars
Physical Review DOscillation modes of neutron stars, a key target for third-generation gravitational wave detectors, encode key information about their constituent nuclear matter. In this work, we study the effect of viscosity on oscillations of cold, polytropic, spherically symmetric neutron stars.
Lennox S. Keeble, Jaime Redondo-Yuste
openaire +3 more sources
Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
wiley +1 more source
Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer
Molecular Oncology, EarlyView.Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley +1 more source