The Square Kilometre Array (SKA): publications

A Late-time Radio Flare Following a Possible Transition in Accretion State in the Tidal Disruption Event AT 2019azh

The Astrophysical Journal American Astronomical Society 933:2 (2022) 176

Authors:

Itai Sfaradi, Assaf Horesh, Rob Fender, David A Green, David RA Williams, Joe Bright, Steve Schulze

The Size–Mass Relation of Post-starburst Galaxies in the Local Universe

The Astrophysical Journal American Astronomical Society 933:2 (2022) 228

Authors:

Xinkai Chen, Zesen Lin, Xu Kong, Zhixiong Liang, Guangwen Chen, Hong-Xin Zhang

The role of redundancy in blind signal estimation for multiple gravitational wave detectors

World Scientific Publishing (2022) 71-83

Authors:

Hao Liu, James Creswell, Sebastian von Hausegger, Pavel Naselsky, Andrew D Jackson

The science case and challenges of space-borne sub-millimeter interferometry

Acta Astronautica Elsevier 196 (2022) 314-333

Authors:

Leonid I Gurvits, Zsolt Paragi, Ricardo I Amils, Ilse van Bemmel, Paul Boven, Viviana Casasola, John Conway, Jordy Davelaar, M Carmen Díez-González, Heino Falcke, Rob Fender, Sándor Frey, Christian M Fromm, Juan D Gallego-Puyol, Cristina García-Miró, Michael A Garrett, Marcello Giroletti, Ciriaco Goddi, José L Gómez, Jeffrey van der Gucht, José Carlos Guirado, Zoltán Haiman, Frank Helmich, Ben Hudson, Elizabeth Humphreys, Violette Impellizzeri, Michael Janssen, Michael D Johnson, Yuri Y Kovalev, Michael Kramer, Michael Lindqvist, Hendrik Linz, Elisabetta Liuzzo, Andrei P Lobanov, Isaac López-Fernández, Inmaculada Malo-Gómez, Kunal Masania, Yosuke Mizuno, Alexander V Plavin, Raj T Rajan, Luciano Rezzolla, Freek Roelofs, Eduardo Ros, Kazi LJ Rygl, Tuomas Savolainen, Karl Schuster, Tiziana Venturi, Marjolein Verkouter, Pablo de Vicente, Pieter NAM Visser, Martina C Wiedner, Maciek Wielgus, Kaj Wiik, J Anton Zensus

Discovery of optical and infrared accretion disc wind signatures in the black hole candidate MAXI J1348–630

Astronomy & Astrophysics EDP Sciences 664 (2022) A100-A100

Authors:

G Panizo-Espinar, M Armas Padilla, T Muñoz-Darias, KII Koljonen, VA Cúneo, J Sánchez-Sierras, D Mata Sánchez, J Casares, J Corral-Santana, RP Fender, F Jiménez-Ibarra, G Ponti, D Steeghs, MAP Torres

Abstract:

MAXI J1348–630 is a low mass X-ray binary discovered in 2019 during a bright outburst. During this event, the system experienced both hard and soft states following the standard evolution. We present multi-epoch optical and near-infrared spectroscopy obtained with X-shooter at the Very Large Telescope. Our dataset includes spectra taken during the brightest phases of the outburst as well as the decay towards quiescence. We study the evolution of the main emission lines, paying special attention to the presence of features commonly associated with accretion disc winds, such as blueshifted absorptions, broad emission line wings and flat-top profiles. We find broad emission line wings in Hα during the hard-to-soft transition and blueshifted absorption troughs at ∼ − 500 km s−1 in Hβ, He I–5876, Hα and Paβ during the bright soft-intermediate state. In addition, flat-top profiles are seen throughout the outburst. We interpret these observables as signatures of a cold (i.e., optical-to-infrared) accretion disc wind present in the system. We discuss the properties of the wind and compare them with those seen in other X-ray transients. In particular, the wind velocity that we observe is low when compared to those of other systems, which might be a direct consequence of the relatively low binary inclination, as suggested by several observables. This study strengthens the hypothesis that cold winds are a common feature in low mass X-ray binaries and that they can also be detected in low inclination objects via high-quality optical and infrared spectroscopy

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