Results 111 to 120 of about 130,686 (336)

NEAR-INFRARED SPECTROSCOPY OF LOW-MASS X-RAY BINARIES: ACCRETION DISK CONTAMINATION AND COMPACT OBJECT MASS DETERMINATION IN V404 Cyg AND Cen X-4 [PDF]

open access: yes, 2010
We present near-infrared (NIR) broadband (0.80–2.42 μm) spectroscopy of two low-mass X-ray binaries: V404 Cyg and Cen X-4. One important parameter required in the determination of the mass of the compact objects in these systems is the binary inclination.
Juthika Khargharia   +2 more
semanticscholar   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

open access: yesAdvanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

X-ray polarization of Z-type neutron star low-mass X-ray binaries

open access: yesAstronomy & Astrophysics
Z-sources are a particular class of neutron star low-mass X-ray binaries characterized by a wide Z-like track in their hard color-soft color (or hardness-intensity) diagrams, with three branches: the horizontal (HB), the normal (NB), and the flaring branch (FB).
Gnarini, Andrea   +8 more
openaire   +3 more sources

Dual Perspectives on GX 17+2: A Simultaneous NICER and NuSTAR Study

open access: yesThe Astrophysical Journal
We performed the first simultaneous NICER and NuSTAR spectral and timing study of the Sco-like Z source GX 17+2. The source traced the full Z track during four observations.
Malu Sudha   +5 more
doaj   +1 more source

A Light Redback Companion of PSR J1622–0315 and Irradiation Power in Spider Systems

open access: yesThe Astrophysical Journal, 2023
We report optical observations of the millisecond pulsar binary system PSR J1622–0315 with the Lulin 1 m telescope in Taiwan and the Lijiang 2.4 m telescope in China between 2019 and 2021.
Y. X. Jane Yap   +2 more
doaj   +1 more source

The origin of Scorpius X-1 [PDF]

open access: yes, 2003
We have used multi-wavelength observations of high precision to derive the space velocity and compute the orbit around the Galactic Centre of the prototype X-ray binary Scorpius X-1. An origin in the local spiral arm of the Milky Way is ruled out.
Mirabel, I. Felix, Rodrigues, Irapuan
core   +3 more sources

Quiescent thermal emission from neutron stars in low-mass X-ray binaries [PDF]

open access: yesAstronomy & Astrophysics, 2015
Context. We monitored the quiescent thermal emission from neutron stars in low-mass X-ray binaries after active periods of intense activity in X-rays (outbursts). Aims. The theoretical modeling of the thermal relaxation of the neutron star crust may be used to establish constraints on the crust composition and transport properties, depending on the ...
Turlione, Anabella   +2 more
openaire   +2 more sources

The clumpy absorber in the high-mass X-ray binary Vela X-1 [PDF]

open access: yes, 2017
Bright and eclipsing, the high-mass X-ray binary Vela X-1 offers a unique opportunity to study accretion onto a neutron star from clumpy winds of O/B stars and to disentangle the complex accretion geometry of these systems.
V. Grinberg   +18 more
semanticscholar   +1 more source

Scalable Polyelectrolyte Complex‐Based Sorbent With Hourly Sorption−Desorption Cycles for Multicyclic Atmospheric Water Harvesting in Arid Environments

open access: yesAdvanced Functional Materials, EarlyView.
A polyelectrolyte complex‐based sorbent is produced by scalable, environmentally benign aqueous phase inversion. Its porous, LiCl‐ and GO‐integrated architecture enables hourly adsorption−desorption cycles at low relative humidity (RH < 30%). A large‐scale prototype achieves multicyclic, solar‐driven atmospheric water harvesting of 1.37 L kg−1 day−1 ...
Seung‐Hwan Oh   +3 more
wiley   +1 more source

The Peculiar Disk Evolution of 4U 1630-472 Observed by Insight-HXMT During its 2022 and 2023 Outbursts

open access: yesThe Astrophysical Journal
We study the spectral properties of the black hole X-ray transient binary 4U 1630–472 during its 2022 and 2023 outbursts with Insight-HXMT observations. We find that the outbursts are in peculiar soft states.
Jing-Qiang Peng   +12 more
doaj   +1 more source

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