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  1. 7481

    The NANOGrav 15 yr Data Set: Looking for Signs of Discreteness in the Gravitational-wave Background by Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian, Jeremy George Baier, Paul T. Baker, Bence Bécsy, Laura Blecha, Adam Brazier, Paul R. Brook, Lucas Brown, Sarah Burke-Spolaor, J. Andrew Casey-Clyde, Maria Charisi, Shami Chatterjee, Tyler Cohen, James M. Cordes, Neil J. Cornish, Fronefield Crawford, H. Thankful Cromartie, Kathryn Crowter, Megan E. DeCesar, Paul B. Demorest, Heling Deng, Timothy Dolch, Elizabeth C. Ferrara, William Fiore, Emmanuel Fonseca, Gabriel E. Freedman, Nate Garver-Daniels, Peter A. Gentile, Joseph Glaser, Deborah C. Good, Kayhan Gültekin, Jeffrey S. Hazboun, Ross J. Jennings, Aaron D. Johnson, Megan L. Jones, Andrew R. Kaiser, David L. Kaplan, Luke Zoltan Kelley, Matthew Kerr, Joey S. Key, Nima Laal, Michael T. Lam, William G. Lamb, Bjorn Larsen, T. Joseph W. Lazio, Natalia Lewandowska, Tingting Liu, Duncan R. Lorimer, Jing Luo, Ryan S. Lynch, Chung-Pei Ma, Dustin R. Madison, Alexander McEwen, James W. McKee, Maura A. McLaughlin, Natasha McMann, Bradley W. Meyers, Patrick M. Meyers, Chiara M. F. Mingarelli, Andrea Mitridate, Priyamvada Natarajan, Cherry Ng, David J. Nice, Stella Koch Ocker, Ken D. Olum, Timothy T. Pennucci, Benetge B. P. Perera, Nihan S. Pol, Henri A. Radovan, Scott M. Ransom, Paul S. Ray, Joseph D. Romano, Jessie C. Runnoe, Shashwat C. Sardesai, Ann Schmiedekamp, Carl Schmiedekamp, Kai Schmitz, Brent J. Shapiro-Albert, Xavier Siemens, Joseph Simon, Magdalena S. Siwek, Sophia V. Sosa Fiscella, Ingrid H. Stairs, Daniel R. Stinebring, Kevin Stovall, Abhimanyu Susobhanan, Joseph K. Swiggum, Stephen R. Taylor, Jacob E. Turner, Caner Unal, Michele Vallisneri, Sarah J. Vigeland, Haley M. Wahl, London Willson, Caitlin A. Witt, David Wright, Olivia Young

    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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  2. 7482
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    Simultaneous Multiwavelength Observations of the Repeating Fast Radio Burst FRB 20190520B with Swift and FAST by Zhen Yan, Wenfei Yu, Kim L. Page, Jie Lin, Di Li, Chenhui Niu, Casey Law, Bing Zhang, Shami Chatterjee, Xian Zhang, Reshma Anna-Thomas

    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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  4. 7484

    Roped Solidarity by Burak Sezer

    Published 2025-03-01
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  5. 7485
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  7. 7487

    Synchronous and Asynchronous X-Ray Monitoring of FRB 20190520B with the Chandra X-Ray Observatory by Jessica Sydnor, Sarah Burke-Spolaor, Kshitij Aggarwal, Reshma Anna-Thomas, Casey J. Law, Harsha Blumer, Liam Connor

    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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  8. 7488

    A New Approach to the Low-frequency Stochastic Gravitational-wave Background: Constraints from Quasars and the Astrometric Hellings–Downs Curve by Jeremy Darling

    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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  9. 7489

    Discourses of “religion” in public health research: Constructing religious facilitators, barriers, and subjects of health as exercises of power by Tyler J. Fuller

    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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  13. 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 by Gudmundur Stefánsson, Suvrath Mahadevan, Joshua N. Winn, Marcus L. Marcussen, Shubham Kanodia, Simon Albrecht, Evan Fitzmaurice, Onė Mikulskytė, Caleb I. Cañas, Juan I. Espinoza-Retamal, Yiri Zwart, Daniel M. Krolikowski, Andrew Hotnisky, Paul Robertson, Jaime A. Alvarado-Montes, Chad F. Bender, Cullen H. Blake, J. R. Callingham, William D. Cochran, Megan Delamer, Scott A. Diddams, Jiayin Dong, Rachel B. Fernandes, Mark R. Giovinazzi, Samuel Halverson, Jessica Libby-Roberts, Sarah E. Logsdon, Michael W. McElwain, Joe P. Ninan, Jayadev Rajagopal, Varghese Reji, Arpita Roy, Christian Schwab, Jason T. Wright

    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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  19. 7499

    Generation of Magnetic Fields around Black Hole Accretion Disks due to Nonconservative Radiation Fields by Mukesh Kumar Vyas, Asaf Pe’er

    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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