Conference Programme

Presentations given in person and those given remotely are marked with “IP” and “R”, respectively. Times are given in South African Standard Time (UT + 2 hours).

A list of all the posters is available on the posters page.

15 January 2023
18:00-21:00 Welcome reception

The conference reception will take place at the South African Astronomical Observatory. Mini-buses will convey participants to & from the Breakwater Lodge/Protea Hotel entrance, which takes ~15 min. The buses leave at 18:30.

16 January 2023
08:30-09:15 Welcome and introduction
08:30 David Buckley, Takalani Nemaungani, Petri Vaisanen, Patrick Woudt Intro & welcomes (IP) [view recording]
08:45 Phil Charles, David Buckley, Lisa Crause Tributes to Darragh O’Donoghue (IP) [view recording]
09:00 Chris Clemens Tributes to Darragh O’Donoghue (R) [view recording]
09:15-10:40 Session 1: Intro + Compact Binaries I (Chair: Buckley)
09:15 Valery Suleimanov Magnetic cataclysmic variables in hard X-rays in Gaia era (IP) [show abstract] [view recording]
09:45 Chris Duffy The accretion behaviour of cataclysmic variables under differing magnetic environments (IP) [show abstract] [view recording]
10:00 Stephen Potter Modelling the polarized synchrotron emissions from AR Sco and RXJ1912 (IP) [show abstract] [view recording]
10:15 Peter Garnavich Optical and UV studies of the white dwarf propeller LAMOST J024048.51+195226.9 (IP) [show abstract] [view recording]
10:30 Q&A
10:45-11:00 Coffee break
11:00-12:30 Session 2: Theory & Simulations I (Chair: Timokhin)
11:00 Marina Romanova MHD simulations of accretion and outflows from magnetized rotating stars (IP) [show abstract] [view recording]
11:30 Bhargav Vaidya Connecting jet launching with underlying magnetised accretion flow using GRMHD simulations. (R) [show abstract] [view recording]
11:45 Dmitry Bisikalo MHD simulations of the mass transfer in close binaries (IP) [show abstract] [view recording]
12:15 Alex Lazarian Magnetism in accretion disks (R) [show abstract] [view recording]
12:45-13:30 Lunch
13:30-15:25 Session 3: Compact Binaries II (Chair: Charles)
13:30 Sudip Bhattacharyya Spin evolution of neutron stars (IP) [show abstract] [view recording]
14:00 Victor Doroshenko Extremes of the accretion in Swift J0243.6+6124 (R) [show abstract] [view recording]
14:15 Alessandro Papitto Bridging accretion and rotation-powered neutron stars, the case of transitional millisecond pulsars. (R) [show abstract] [view recording]
14:30 Alessio Marino Disc winds during the faint outburst of an accreting millisecond X-ray pulsar (R) [show abstract] [view recording]
14:45 Joern Wilms Magnetic accretion in neutron star X-ray binaries (IP) [show abstract] [view recording]
15:00 Nicola La Palombara Be X-ray binaries at the extremes of matter accretion (R) [show abstract] [view recording]
15:15 Q&A
15:25-15:40 Coffee break
15:40-16:30 Session 4: Proto-stellar & YSOs (Chair: Romanova)
15:40 Silvia Alencar Accretion and magnetic fields in young stars (R) [show abstract] [view recording]
16:00 Jérôme Bouvier The magnetospheric accretion process in T Tauri stars: coordinated multi-site observing campaigns (IP) [show abstract] [view recording]
16:15 Koshvendra Singh Morphological analysis of EX Lupi accretion dynamics during its recent outburst (IP) [show abstract] [view recording]
16:30-18:00 Session 5: Compact Binaries III (Chair: Bhattacharyya)
16:30 Andrey Timokhin Physics of radio pulsars (IP) [show abstract] [view recording]
16:50 Matthew Middleton ULX pulsars (R) [show abstract] [view recording]
17:05 Lutendo Nyadzani ULXs as progenitors of merging compact binary systems (IP) [show abstract] [view recording]
17:20 Sergei Bykov ULX pulsar Swift J0243.6+6124 observations with NuSTAR: dominance of reflected emission in the super-Eddington state (R) [show abstract] [view recording]
17:35 Sergey Molkov Transient cyclotron lines in energy spectra of accreting pulsars (IP) [show abstract] [view recording]
17:50 Q&A
17 January 2023
08:30-10:30 Session 6: Compact Binaries IV (Chair: de Martino)
08:30 Alex Tetarenko Probing jets in X-ray binaries with polarization measurements (IP) [show abstract] [view recording]
09:00 Phil Charles Superhumps in black-hole X-ray transients: O’Donoghue & Charles – 25 years later (IP) [show abstract] [view recording]
09:15 Tomaso Belloni Quasi-periodic oscillations in X-ray binaries in the 2020s (R) [show abstract] [view recording]
09:30 Anna Chashkina Jet dissipation mechanisms on different scales (IP) [show abstract] [view recording]
09:45 Raj Kumar Spectral behaviour during rapid flux change in Swift J1728.9-3613 during intermediate state. (R) [show abstract]
10:00 Ruican Ma Variable corona during the transition from type-C to type-B quasi-periodic oscillations in the black hole X-ray binary MAXI J1820+070 (R) [show abstract] [view recording]
10:15 Q&A
10:30-10:45 Coffee
10:45-12:30 Session 7: Stars, Planets & Planet Formation (Chair: Whitelock)
10:45 Mario Flock Gas and dust dynamics and evolution in protoplanetary disks (R) [show abstract] [view recording]
11:15 Joe Ninan Unlocking the mysteries of inner protoplanetary disc accretion using spectroscopy (IP) [show abstract] [view recording]
11:30 Richard Lovelace Rossby-wave instability and its role (IP) [show abstract] [view recording]
11:45 James Chibueze Signatures of accretion burst in massive protostars (IP) [show abstract] [view recording]
12:00 Andrew Cameron Centrifugally-supported prominence systems in fast-rotating cool stars (R) [show abstract] [view recording]
12:15 Q&A
12:30-13:15 Lunch
13:15-15:30 Session 8: Compact Binaries V (Chair: Potter)
13:15 Deanne Coppejans The case for jets in cataclysmic variables (R) [show abstract] [view recording]
13:45 Fernando Falkenberg Marques Polarimetry of the asynchronous magnetic cataclysmic variables 1RXS J083842.1-282723 and IGR J19552+0044 (IP) [show abstract] [view recording]
14:00 Krystian Ilkiewicz Flickering in polars (IP) [show abstract] [view recording] [view poster]
14:15 Claudia V. Rodrigues 1RXS J174320.1-042953: a magnetic cataclysmic variable with a high-mass white dwarf (R) [show abstract] [view recording]
14:30 Maria Georganti Plateaus, dips, and rebrightenings during the outbursts of WZ Sge: a hint of magnetic propeller? (R) [show abstract] [view recording]
14:45 Srinivas M. Rao Change in accretion flow in an intermediate polar V709 Cas (R) [show abstract] [view recording]
15:00 Ayoze Álvarez Hernández Testing white dwarf X-ray masses in intermediate polars with dynamical studies (R) [show abstract] [view recording]
15:15 Q&A
15:30-15:45 Coffee
15:45-17:15 Session 9: Disc/Jet Connection (Chair: Meintjes)
15:45 Andrzej Zdziarski Jet-disc connection and magnetic fields in black-hole binaries (IP) [show abstract] [view recording]
16:30 Jakob van den Eijnden The inflow-outflow coupling of strongly magnetized accreting neutron stars (R) [show abstract] [view recording]
16:45 Rob Fender Jet launching: an empirical view (R) [show abstract] [view recording]
17:00 Claudio Zanni Magnetospheric accretion and protostellar outflows in YSOs (R) [show abstract] [view recording]
17:15 Q&A
17:25-17:53 Session 10: Poster Talks I (Chair: Townsend)
17:25 Marina Orio The surprising periodicities of the symbiotic star FN Sgr (R) [show abstract] [view recording] [view poster]
17:29 Kyle Solomons Understanding the ionized outflows from black hole objects (IP) [show abstract] [view recording] [view poster]
17:33 Hannes Breytenbach On the discovery of quasi-periodic oscillations in the polars J1928-5001 and IGR J14536–5522 (IP) [show abstract] [view recording] [view poster]
17:37 Louis Du Plessis Modelling the multi-wavelength non-thermal emission of AR Sco (R) [show abstract] [view recording] [view poster]
17:41 Diego Carvalho Analysis of the candidate polar CRTS J035758.7+102943 with multiple observational techniques (R) [show abstract] [view poster]
17:45 Arti Joshi Optical studies of two cataclysmic variables: RBS 0490 and SDSS J075939.79 +191417.3 (R) [show abstract] [view recording] [view poster]
17:49 Natalia Palivanas A multi-technique study of the polar cataclysmic variable candidate CRTSJ091936.6-055519 (R) [show abstract] [view recording] [view poster]
17:53 Joshua Reding An enigmatic class of isolated white dwarfs with magnetic emission (R) [show abstract] [view recording] [view poster]
18 January 2023
08:30-10:30 Session 11: Theory & Simulations II (Chair: Zdziarski)
08:30 Gibwa Musoke General relativistic magneto-hydrodynamic simulations of truncated accretion disks (R) [show abstract] [view recording]
08:45 Akihiro Inoue General relativistic magneto-hydrodynamic simulations of super-Eddington accretion flows and powerful outflows around neutron stars with dipole magnetic fields (IP) [show abstract] [view recording]
09:00 Pavel Abolmasov Simulating the shock dynamics of a neutron star accretion column (IP) [show abstract] [view recording]
09:15 Raj Kishor Joshi Numerical simulation of jets driven by radiation of accretion disks (IP) [show abstract] [view recording]
09:30 Aristarh Chasovnikov Magnetorotational collapse and gamma-ray bursts with a complex structure (IP) [show abstract] [view recording]
09:45 Q&A
09:55-10:31 Session 12: Poster Talks II (Chair: Macfarlane)
09:55 Sili Wang Transition luminosities of galactic black hole transients based on Swift/XRT and NICER/XTI observations (R) [show abstract] [view recording] [view poster]
09:59 Simon de Wet Gamma-ray bursts with MeerLICHT (IP) [show abstract] [view recording] [view poster]
10:03 Evaristus Iyida Modelling the radio – γ-ray emission components of jetted AGNs (R) [show abstract]
10:07 Omar Kurtanidze Multiwavelength monitoring of blazars (R) [show abstract]
10:11 Thuto Praisegod Ndlovu A multiwavelength study of X-ray binary stars (IP) [show abstract] [view recording] [view poster]
10:15 Dimakatso Jeannett Maheso Spectral and temporal analysis of short gamma-ray bursts detected by the Fermi space telescope with known redshift (IP) [show abstract] [view recording] [view poster]
10:19 John Paice Introducing CorrSim – a correlated timing observation simulator (R) [show abstract] [view recording] [view poster]
10:23 Rosa Poggiani The LIGO-Virgo O3 run: science results and multi-messenger investigations (R) [show abstract] [view recording] [view poster]
10:27 Fatemeh Zhara Majidi New accretors in the Lupus I cloud (R) [show abstract] [view recording] [view poster]
10:31-10:50 Coffee
10:50-12:30 Session 13: Galaxies (Chair: White)
10:50 Enrique Lopez Rodriguez Extragalactic magnetism using far-infrared polarimetry (R) [show abstract] [view recording]
11:20 Anton Dmytriiev Correlation of emission line luminosity and gamma-ray dominance in blazars (IP) [show abstract] [view recording]
11:35 Priyanjali Patel Studying the variability of quasars as a function of rest-frame wavelength from the Zwicky Transient Facility (R) [show abstract] [view recording]
11:50 Elisabete de Gouveia Dal Pino Magnetically dominated Jets from AGNs and the origin of very high energy phenomena (R) [show abstract] [view recording]
12:20 Q&A
12:30-13:15 Lunch
13:15-15:30 Session 14: Compact Binaries VI (Chair: Buckley)
13:15 Jean-Marie Hameury Short outbursts in intermediate polars and magnetically gated accretion (IP) [show abstract] [view recording]
13:45 Zwidofhelangani Khangale A snapshot circular spectropolarimetric study of cataclysmic variables stars with SALT (IP) [show abstract] [view recording]
14:00 Nikita Rawat SWIFT J0503.7-2819: a nearly synchronous intermediate polar below the period gap? (IP) [show abstract] [view recording]
14:15 Mokhine Motsoaledi Magnetic cataclysmic variables from the Catalina Real-time Transient Survey (IP) [show abstract] [view recording]
14:30 Matthew Green Where are the magnetic fields of helium-dominated cataclysmic variables? (IP) [show abstract] [view recording]
14:45 Colin Littlefield SDSS J134441.83+204408.3: A highly asynchronous, short-period magnetic cataclysmic variable with a 56 MG field strength (R) [show abstract] [view recording]
15:00 Joseph Patterson V1674 Herculis: where magnetism meets the classical nova (R) [show abstract]
15:15 Q&A
15:30-15:50 Coffee
15:50-17:50 Session 15: Gamma-Ray Bursts I (Chair: Tetarenko)
15:50 Carole Mundell Gamma-ray bursts, accretion and new windows on the magnetised Universe (R) [show abstract] [view recording]
16:20 Soebur Razzaque Recent highlights on gamma-ray bursts (IP) [show abstract] [view recording]
16:35 Ankur Ghosh Low-frequency view of long duration gamma-ray burst afterglows (IP) [show abstract] [view recording]
16:50 Amit Kumar Ror Prompt emission and early optical afterglow of VHE detected GRB 201015A and GRB 201216C: Onset of the external forward shock (R) [show abstract] [view recording]
17:05 Bing Zhang The physics of gamma-ray bursts: recent progress (R) [show abstract] [view recording]
17:35 Q&A
19 January 2023
08:30-10:30 Session 16: Stellar & Planetary Magnetism (Chair: Ninan)
08:30 Moira Jardine Magnetism in young stars (R) [show abstract] [view recording]
09:00 Stefano Bagnulo Two (or more) channels for the onset of magnetic fields in white dwarfs (R) [show abstract] [view recording]
09:15 Raphaël Mignon-Risse A new magnetized paradigm for massive star formation (R) [show abstract] [view recording]
09:30 Arnab Sarkar New insights into the helium star formation channel of AM CVn systems with explanations of Gaia14aae and ZTFJ1637+49 (R) [show abstract] [view recording]
09:45 Nicholas Achilleos The Jupiter-Ganymede electromagnetic interaction (R) [show abstract] [view recording]
10:15 Q&A
10:30-10:45 Coffee
10:45-12:45 Session 17: Gamma-Ray Bursts II, Gravitational Wave Events and Multimessenger Observations (Chair: Razzaque)
10:45 Eleonora Troja Neutron star mergers in the era of multimessenger observations (R) [show abstract] [view recording]
11:15 Kuntal Misra The engimatic TeV detected gamma-ray bursts (R) [show abstract] [view recording]
11:30 Nuria Jordana-Mitjans A short gamma-ray burst from a proto-magnetar remnant (R) [show abstract] [view recording]
11:45 Monica Barnard Very high-energy gamma-ray afterglows from GRB 180720B and GRB 190829A with external Compton emission (R) [show abstract] [view recording]
12:00 Brian Metzger Heavy element nucleosynthesis from the birth of black holes (R) [show abstract] [view recording]
12:30 Q&A
12:45-13:30 Lunch
13:30-15:30 Session 18: New missions, new observations (Chair: Bonnet-Bidaud)
13:30 Sthabile Kolwa Preparing for the SKA: MeerKAT Science Updates (R) [show abstract] [view recording]
14:00 Alexander Lutovinov Galaxy and metagalaxy in hard X-rays with the Mikhail Pavlinsky ART-XC telescope onboard SRG (IP) [show abstract] [view recording]
14:15 Sergey Tsygankov Polarized emission from X-ray pulsars as seen by the IXPE observatory (IP) [show abstract] [view recording]
14:30 Rahul Gupta Recent observations of gamma-ray bursts using the 3.6m Devasthal Optical Telescope (DOT) (R) [show abstract] [view recording]
14:45 Axel Schwope Cataclysmic variable surveys with eROSITA (R) [show abstract] [view recording]
15:00 Q&A
15:10-15:30 Coffee
15:30-16:45 Session 19: Black Holes & GRBs & misc objects (Chair: Chibueze)
15:30 Pieter Meintjes Highly magnetized white dwarfs as cosmic gamma-ray sources (IP) [show abstract] [view recording]
15:45 Isabel de Jesus Lima X-rays and TESS observations of symbiotic stars (IP) [show abstract] [view recording]
16:00 Sandino Estrada-Dorado Synthetic X-ray emission from white dwarf accreting planetary material (R) [show abstract] [view recording]
16:15 Poshak Gandhi Accreting black hole jet launching and acceleration probed through multiwavelength timing (R) [show abstract] [view recording]
16:30 Q&A
16:45-18:00 Discussions, summary & close [view recording]
19:30-22:00 Conference Dinner

The conference dinner will be held at the Baía restaurant on Thursday 19 Jan, from 19:30-22:00. This is walking distance from the conference venue in the V&A Waterfront Mall.