Results 61 to 70 of about 6,397,764 (332)

The puzzling orbital period evolution of the LMXB AX J1745.6−2901 [PDF]

open access: yes, 2015
The orbital period evolution of X-ray binaries provides fundamental clues to understanding mechanisms of angular momentum transfer and loss in these systems.
G. Ponti   +4 more
semanticscholar   +1 more source

Post‐COVID Fatigue Is Associated With Reduced Cortical Thickness After Hospitalization

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neuropsychiatric symptoms are among the most prevalent sequelae of COVID‐19, particularly among hospitalized patients. Recent research has identified volumetric brain changes associated with COVID‐19. However, it currently remains poorly understood how brain changes relate to post‐COVID fatigue and cognitive deficits.
Tim J. Hartung   +190 more
wiley   +1 more source

The Orbital Period Changes for Novae

open access: yesThe Astrophysical Journal
Cataclysmic variables (CVs) are close interacting binaries in which a white dwarf accretes materials from a low-mass main-sequence companion. CVs can experience nova eruptions due to low mass transfer rates.
Wenshi Tang, Xiang-Dong Li, Bo Wang
doaj   +1 more source

Period Change of W UMa Type Contact Binary AB And [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1997
The CCD photometric observations of W UMa-type eclipsing binary AB And were made from September 1994 to October 1996. New four primary minimum times were obtained form these observations.
Ho Jin   +4 more
doaj  

Co-orbital exoplanets from close-period candidates: the TOI-178 case [PDF]

open access: yesAstronomy & Astrophysics, 2019
Despite the existence of co-orbital bodies in the solar system, and the prediction of the formation of co-orbital planets by planetary system formation models, no co-orbital exoplanets (also called trojans) have been detected thus far.
A. Leleu   +8 more
semanticscholar   +1 more source

Orbital Period and Outburst Luminosity of Transient Low Mass X-ray Binaries

open access: yes, 2010
In this paper we investigate the relation between the maximal luminosity of X-ray outburst and the orbital period in transient low mass X-ray binaries (or soft X-ray transients) observed by the Rossi X-ray Timing Explorer (RXTE) in the past decade.
Altamirano   +50 more
core   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti   +5 more
wiley   +1 more source

Determining the Orbital Period and Wind Geometry in GRO J1655–40

open access: yesThe Astrophysical Journal, 2023
During the course of its 2005 outburst, the black hole X-ray binary GRO J1655–40 launched an accretion disk wind associated with deep X-ray absorption lines and strong Compton scattering.
C. Petretti, J. Neilsen, J. Homan
doaj   +1 more source

Orbital period decay of compact black hole X-ray binaries: the influence of circumbinary disks? [PDF]

open access: yes, 2015
Recently, compact black hole X-ray binaries XTE J 1118+480 and A0620-00 have been reported to be experiencing a fast orbital period decay, which is two orders of magnitude higher than expected with gravitational wave radiation.
Wen-Cong Chen, Xiang-dong Li
semanticscholar   +1 more source

A cyclical period variation detected in the updated orbital period analysis of TV Columbae [PDF]

open access: yes, 2010
The two CCD photometries of the intermediate polar TV Columbae are made for obtaining the two updated eclipse timings with high precision. There is an interval time \sim 17yr since the last mid-eclipse time observed in 1991.
A. Retter   +21 more
core   +3 more sources

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