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7481
The NANOGrav 15 yr Data Set: Looking for Signs of Discreteness in the Gravitational-wave Background
Published 2024-01-01“…The cosmic merger history of supermassive black hole binaries (SMBHBs) is expected to produce a low-frequency gravitational wave background (GWB). …”
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7482
Wide and Fast: Monitoring the Sky in Subsecond Domain with the FAVOR and TORTORA Cameras
Published 2010-01-01Get full text
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7483
Simultaneous Multiwavelength Observations of the Repeating Fast Radio Burst FRB 20190520B with Swift and FAST
Published 2025-01-01“…We detect no multiwavelength counterpart to the PRS. The 3 σ luminosity upper limits are 1.04 × 10 ^47 (15–150 keV), 8.81 × 10 ^42 (0.3–10 keV), 9.26 × 10 ^42 (UVW1), and 2.54 × 10 ^42 erg s ^−1 ( U ), respectively. …”
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7485
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7486
Mass of Cepheid V350 Sgr Incorporating Interferometry and the Companion Mass
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7487
Synchronous and Asynchronous X-Ray Monitoring of FRB 20190520B with the Chandra X-Ray Observatory
Published 2025-01-01“…We place a direct limit on the presence of a massive black hole (MBH) in this system, limiting mass and the Eddington ratio λ _E to ${M}_{\mathrm{BH}}\lt 4.3\times 1{0}^{3}({\lambda }_{{\rm{E}}}^{-1})\,{M}_{\odot }$ (in a low-density line-of-sight limit) and ${M}_{\mathrm{BH}}\lt 1.8\times 1{0}^{4}({\lambda }_{{\rm{E}}}^{-1})\,{M}_{\odot }$ (high-density limit). …”
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7488
A New Approach to the Low-frequency Stochastic Gravitational-wave Background: Constraints from Quasars and the Astrometric Hellings–Downs Curve
Published 2025-01-01“…This astrometric analysis does not yet reach the sensitivity needed to detect the pulsar timing–based red gravitational-wave spectrum extrapolated to the quasar gravitational-wave sensitivity window, assuming that the turnover in the spectrum occurs at ∼1 nHz for massive black hole binaries. The limits presented here may exclude some exotic interpretations of the stochastic gravitational-wave background.…”
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7489
Discourses of “religion” in public health research: Constructing religious facilitators, barriers, and subjects of health as exercises of power
Published 2025-12-01“…These discourses reinforce binaries of “good religion” and “bad belief,” contributing to epistemic injustice and shaping health subjectivities in ways that can undermine equity. …”
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7490
Impossible Justice and the Allure of the Absolute: A Psychoanalytic Reading of Radicalization
Published 2025-03-01Get full text
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7491
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7492
Invisible Theatre: militarized space and the staging of affective atmospheres
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7493
Gaia-4b and 5b: Radial Velocity Confirmation of Gaia Astrometric Orbital Solutions Reveal a Massive Planet and a Brown Dwarf Orbiting Low-mass Stars
Published 2025-01-01“…Here we present RV follow-up observations of 28 M and K stars with candidate astrometric substellar companions, which led to the confirmation of two systems, Gaia-4b and Gaia-5b, identification of five systems that are single lined but require additional data to confirm as substellar companions, and the refutation of 21 systems as stellar binaries. Gaia-4b is a massive planet ( M = 11.8 ± 0.7 M _J ) in a P = 571.3 ± 1.4 day orbit with a projected semimajor axis a _0 = 0.312 ± 0.040 mas orbiting a 0.644 ± 0.02 M _⊙ star. …”
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7494
Revisiting the Activity–Rotation Relation for Evolved Stars
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7495
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7499
Generation of Magnetic Fields around Black Hole Accretion Disks due to Nonconservative Radiation Fields
Published 2025-01-01“…The predicted field strengths could affect the thermal emission, synchrotron radiation, and polarization properties of black hole accretion systems, with implications for X-ray binaries, active galactic nuclei, and jet formation. …”
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7500
Applying the Adomian Method to Solve the Fokker–Planck Equation: A Case Study in Astrophysics
Published 2024-10-01Get full text
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