Results 151 to 160 of about 2,078,750 (288)

Radio Pulse Search from Aql X-1

open access: yesThe Astrophysical Journal
We present 12 observations of the accreting millisecond X-ray pulsar Aql X-1, taken from 2022 August to 2023 October using the Five-hundred-meter Aperture Spherical Radio Telescope at 1250 MHz.
Long Peng   +7 more
doaj   +1 more source

Toward large-area sub-arcsecond x-ray telescopes II [PDF]

open access: bronze, 2016
Stephen L. O’Dell   +40 more
openalex   +1 more source

Markarian Multiwavelength Data Center (MMDC): A Tool for Retrieving and Modeling Multitemporal, Multiwavelength, and Multimessenger Data from Blazar Observations

open access: yesThe Astronomical Journal
The Markarian Multiwavelength Data Center ( MMDC ) is a web-based tool designed for accessing and retrieving multiwavelength and multimessenger data from blazar observations.
N. Sahakyan   +9 more
doaj   +1 more source

A SEARCH FOR VERY HIGH ENERGY GAMMA-RAY EMISSION FROM SCORPIUS X-1 WITH THE MAGIC TELESCOPES [PDF]

open access: bronze, 2011
J. Aleksić   +99 more
openalex   +1 more source

Phase-resolved Spectroscopy of Low-frequency Quasiperiodic Oscillations from the Newly Discovered Black Hole X-Ray Binary Swift J1727.8-1613

open access: yesThe Astrophysical Journal
Low-frequency quasiperiodic oscillations (LFQPOs) are commonly observed in X-ray light curves of black hole X-ray binaries (BHXRBs); however, their origin remains a topic of debate.
Qing-Cang Shui   +16 more
doaj   +1 more source

Discovery of a New Flaring Class in GRS 1915+105 Using AstroSat

open access: yesThe Astrophysical Journal
The highly variable black hole X-ray binary GRS 1915+105 has shown many flaring classes when the source oscillates between the high soft state (HS) and the hard intermediate state with a transition time of less than 10 s. The X-ray flux is anticorrelated
Ruchika Dhaka   +3 more
doaj   +1 more source

Final Performances of the X-Ray Mirrors of the Jet-X Telescope [PDF]

open access: bronze, 1998
E. Poretti   +12 more
openalex   +1 more source

Discovery of a Pair of Galaxies with Both Hosting X-Ray Binary Candidates at z = 2.544

open access: yesThe Astrophysical Journal Letters
Among high-redshift galaxies, aside from active galactic nuclei (AGNs), X-ray binaries (XRBs) can be significant sources of X-ray emission. XRBs play a crucial role in galaxy evolution, reflecting the stellar populations of galaxies and regulating star ...
Sijia Cai   +8 more
doaj   +1 more source

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