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State-dependent signatures of jets and winds in the optical and infrared spectrum of the black hole transient GX 339$-$4

(2025)

Authors:

A Ambrifi, D Mata Sánchez, T Muñoz-Darias, J Sánchez-Sierras, M Armas Padilla, MC Baglio, J Casares, JM Corral-Santana, VA Cúneo, RP Fender, G Ponti, DM Russell, M Shidatsu, D Steeghs, MAP Torres, Y Ueda, F Vincentelli

WISDOM Project – XXII. A 5 per cent precision CO-dynamical supermassive black hole mass measurement in the galaxy NGC 383

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 537:1 (2025) 520-536

Authors:

Hengyue Zhang, Martin Bureau, Ilaria Ruffa, Michele Cappellari, Timothy A Davis, Pandora Dominiak, Jacob S Elford, Satoru Iguchi, Federico Lelli, Marc Sarzi, Thomas G Williams
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The MAGPI Survey: the subtle role of environment and not-so-subtle impact of generations of stars on galaxy dynamics

ArXiv 2501.08461 (2025)

Authors:

Caroline Foster, Sabine Bellstedt, Francesco DEugenio, Adriano Poci, Ryan Bagge, Katherine Harborne, Thomas Venville, J Trevor Mendel, Claudia Del P Lagos, Emily Wisnioski, Tania M Barone, Andrew J Battisti, Stefania Barsanti, Sarah Brough, Scott M Croom, Caro Derkenne, Lucas C Kimmig, Anilkumar Mailvaganam, Rhea-Silvia Remus, Gauri Sharma, Sarah M Sweet, Sabine Thater, Lucas M Valenzuela, Jesse van de Sande, Sam P Vaughan, Bodo Ziegler
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Bounding elastic photon-photon scattering at √s ≈ 1 MeV using a laser-plasma platform

Physics Letters B Elsevier 861 (2025) 139247

Authors:

R Watt, B Kettle, E Gerstmayr, B King, A Alejo, S Astbury, C Baird, S Bohlen, M Campbell, C Colgan, D Dannheim, C Gregory, H Harsh, Peter Hatfield, J Hinojosa, D Hollatz, Y Katzir, J Morton, Cd Murphy, A Nurnberg, J Osterhoff, G Pérez-Callejo, K Põder, Pp Rajeev, C Roedel, F Roeder, Fc Salgado, Gm Samarin, G Sarri, A Seidel, C Spindloe, S Steinke, Mjv Streeter, Agr Thomas, C Underwood, W Wu, M Zepf, Steven Rose, Spd Mangles

Abstract:

We report on a direct search for elastic photon-photon scattering using x-ray and 𝛾 photons from a laser-plasma based experiment. A 𝛾 photon beam produced by a laser wak­field accelerator provided a broadband 𝛾 spectrum extending to above 𝐸𝛾 = 200 MeV. These were collided with a dense x-ray field produced by the emission from a laser heated germanium foil at 𝐸𝑥 ≈ 1.4 keV, corresponding to an invariant mass of √𝑠 = 1.22 ± 0.22 MeV. In these asymmetric collisions elastic scattering removes one x-ray and one high-energy 𝛾 photon and outputs two lower energy 𝛾 photons. No changes in the 𝛾 photon spectrum were observed as a result of the collisions allowing us to place a 95% upper bound on the cross section of 1.5 × 1015 μb. Although far from the QED prediction, this represents the lowest upper limit obtained so far for √𝑠 ≲ 1 MeV.
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State-dependent signatures of jets and winds in the optical and infrared spectrum of the black hole transient GX 339-4

Astronomy & Astrophysics EDP Sciences (2025)

Authors:

A Ambrifi, D Mata Sánchez, T Muñoz-Darias, J Sánchez-Sierras, M Armas Padilla, MC Baglio, J Casares, JM Corral-Santana, VA Cúneo, RP Fender, G Ponti, DM Russell, M Shidatsu, D Steeghs, MAP Torres, Y Ueda, F Vincentelli
More details from the publisher