Results 121 to 130 of about 508,364 (352)

Low-Mass X-ray Binary Populations

open access: yes, 2010
Low-mass X-ray binaries (LMXBs) have been studied in the Galaxy since the beginning of X-ray astronomy. A lot has been learned about these bright X-ray sources, but significant questions are still open.
Fabbiano, G.
core   +1 more source

Accretion flows in X–ray binaries

open access: yesPhilosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2002
I review the X-ray observations of Galactic accreting black holes and neutron stars, and interpretions of these in terms of solutions of the accretion flow equations.
openaire   +5 more sources

Making Photoresponsive Metal–Organic Frameworks an Effective Class of Heterogeneous Photocatalyst

open access: yesAdvanced Functional Materials, EarlyView.
This review summarizes photoresponsive MOFs for photocatalytic applications, focusing on their capacity to enhance light harvesting, charge transfer, and surface reactions. While existing studies provide foundational insights, emerging characterization techniques enable a deeper understanding of photoresponsive MOFs.
Rui Liu   +3 more
wiley   +1 more source

X-Ray Polarized View of the Accretion Geometry in the X-Ray Binary Circinus X-1

open access: yesThe Astrophysical Journal Letters
Cir X-1 is a neutron star X-ray binary characterized by strong variations in flux during its eccentric ∼16.6 day orbit. There are also strong variations in the spectral state, and it has historically shown both atoll and Z state properties.
John Rankin   +103 more
doaj   +1 more source

Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070. [PDF]

open access: yesNat Commun, 2021
You B   +125 more
europepmc   +1 more source

Fast optical variability in Supergiant X-ray binaries [PDF]

open access: yesA&A 693, A242 (2025)
The main goal of this work is to investigate the fast photometric variability of the optical counterparts to supergiant X-ray binaries and to compare the general patterns of such variability with the Galactic population of other early-type stars. We analyzed a sample of 14 high-mass X-ray binaries with supergiant companions observed by the Transiting ...
arxiv   +1 more source

Optical Constraints on an X-ray Transient Source in M31

open access: yes, 2005
We have detected a transient X-ray source in the M31 bulge through a continuing monitoring campaign with the Chandra ACIS-I camera. The source was detected at R.A.=00:42:33.428 +/- 0.11'', Dec.=+41:17:03.37 +/- 0.11'' in only a single observation taken ...
Benjamin F. Williams   +9 more
core   +1 more source

Ultra‐Effective Light‐Activated Antibacterial Activity via Carboxyl Functionalized Graphene Quantum Dots and Films

open access: yesAdvanced Functional Materials, EarlyView.
Carboxyl‐functionalized graphene quantum dots (cGQDs) exhibit high singlet oxygen quantum yield due to strong spin–orbit coupling. cGQDs achieve minimum bactericidal concentration of only 0.4 µg mL−1 against S. aureus under low‐intensity illumination.
Muhammad Hassnain   +10 more
wiley   +1 more source

Binaries with Compact Components: Theoretical and Observational Challenges [PDF]

open access: yesarXiv, 2004
We report on recent progress in our theoretical understanding of X-ray binaries, which has largely been driven by new observations, and illustrate the interplay between theory and observations considering as examples intermediate-mass X-ray binaries, irradiation-driven evolution, ultraluminous X-ray sources and neutron stars with low-velocity kicks.
arxiv  

Observation of soft X-rays from cosmic sources [PDF]

open access: yes
A binary X-ray source, an extended extragalactic X-ray source and several nearby stars were surveyed for X-ray emission. The energy spectrum and time structure of X-ray flux from the binary source, Her X-l, was investigated in the range from 0.15 to 6 ...
Acton, L. W., Catura, R. C.
core   +1 more source

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