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Black Hole

Lensing of space time around a black hole. At Oxford we study black holes observationally and theoretically on all size and time scales - it is some of our core work.

Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES.

Sara Motta

visitor

Sub department

  • Astrophysics
sara.motta@physics.ox.ac.uk
  • About
  • Publications

Mass and spin measurements for the neutron star 4U1608−52 through the relativistic precession model

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 486:4 (2019) 4485-4497

Authors:

L du Buisson, S Motta, R Fender
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A detailed radio study of the energetic, nearby, and puzzling GRB 171010A

Monthly Notices of the Royal Astronomical Society Oxford University Press 486:2 (2019) 2721-2729

Authors:

Joe Bright, A Horesh, Aj van der Horst, R Fender, Ge Anderson, Sara Motta, Sb Cenko, Da Green, Y Perrott, D Titterington

Abstract:

We present the results of an intensive multi-epoch radio frequency campaign on the energetic and nearby GRB 171010A with the Karl G. Janksy Very Large Array and Arcminute Microkelvin Imager Large Array. We began observing GRB 171010A a day after its initial detection, and were able to monitor the temporal and spectral evolution of the source over the following weeks. The spectra and their evolution are compared to the canonical theories for broad-band GRB afterglows, with which we find a general agreement. There are, however, a number of features that are challenging to explain with a simple forward shock model, and we discuss possible reasons for these discrepancies. This includes the consideration of the existence of a reverse shock component, potential microphysical parameter evolution, and the effect of scintillation.
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Study of the X-ray properties of the neutron star binary 4U 1728–34 from the soft-to-hard state

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 484:3 (2019) 3004-3016

Authors:

Yanan Wang, Mariano Méndez, Diego Altamirano, Guobao Zhang, TM Belloni, Evandro M Ribeiro, M Linares, Andrea Sanna, SE Motta, John A Tomsick
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Accretion in strong field gravity with eXTP

Science China Physics, Mechanics & Astronomy Springer Nature 62:2 (2019) 29504

Authors:

Alessandra De Rosa, Phil Uttley, LiJun Gou, Yuan Liu, Cosimo Bambi, Didier Barret, Tomaso Belloni, Emanuele Berti, Stefano Bianchi, Ilaria Caiazzo, Piergiorgio Casella, Marco Feroci, Valeria Ferrari, Leonardo Gualtieri, Jeremy Heyl, Adam Ingram, Vladimir Karas, FangJun Lu, Bin Luo, Giorgio Matt, Sara Motta, Joseph Neilsen, Paolo Pani, Andrea Santangelo, XinWen Shu, JunFeng Wang, Jian-Min Wang, YongQuan Xue, YuPeng Xu, WeiMin Yuan, YeFei Yuan, Shuang-Nan Zhang, Shu Zhang, Ivan Agudo, Lorenzo Amati, Nils Andersson, Cristina Baglio, Pavel Bakala, Altan Baykal, Sudip Bhattacharyya, Ignazio Bombaci, Niccoló Bucciantini, Fiamma Capitanio, Riccardo Ciolfi, Wei K Cui, Filippo D’Ammando, Thomas Dauser, Melania Del Santo, Barbara De Marco, Tiziana Di Salvo, Chris Done, Michal Dovčiak, Andrew C Fabian, Maurizio Falanga, Angelo Francesco Gambino, Bruce Gendre, Victoria Grinberg, Alexander Heger, Jeroen Homan, Rosario Iaria, JiaChen Jiang, ChiChuan Jin, Elmar Koerding, Manu Linares, Zhu Liu, Thomas J Maccarone, Julien Malzac, Antonios Manousakis, Frédéric Marin, Andrea Marinucci, Missagh Mehdipour, Mariano Méndez, Simone Migliari, Cole Miller, Giovanni Miniutti, Emanuele Nardini, Paul T O’Brien, Julian P Osborne, Pierre Olivier Petrucci, Andrea Possenti, Alessandro Riggio, Jerome Rodriguez, Andrea Sanna, LiJing Shao, Malgosia Sobolewska, Eva Sramkova, Abigail L Stevens, Holger Stiele, Giulia Stratta, Zdenek Stuchlik, Jiri Svoboda, Fabrizio Tamburini, Thomas M Tauris, Francesco Tombesi, Gabriel Torok, Martin Urbanec, Frederic Vincent, QingWen Wu, Feng Yuan, Jean JM in’ t Zand, Andrzej A Zdziarski, XinLin Zhou
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The long outburst of the black hole transient GRS 1716–249 observed in the X-ray and radio band

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 482:2 (2019) 1587-1601

Authors:

T Bassi, M Del Santo, A D’Aì, SE Motta, J Malzac, A Segreto, JCA Miller-Jones, P Atri, RM Plotkin, TM Belloni, T Mineo, AK Tzioumis
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