Name: HEASA 2021
Start: 2021-09-13T00:00:00+02:00
End: 2021-09-17T16:35:00+02:00
Location: No location set

HEASA 2021

from Monday, September 13, 2021 (12:00 AM) to Friday, September 17, 2021 (4:35 PM)

Monday, September 13, 2021
1:30 PM
1:30 PM - 2:15 PM
Contributions

1:30 PM Welcome and Introduction - Markus Boettcher (North-West University)

1:40 PM Technical Introduction - Anna Samara Larmuth (University of Johannesburg)

1:55 PM Welcome by the Department of Science and Innovation - Takalani Nemaungani (Department of Science and Innovation)
2:15 PM
2:15 PM - 3:30 PM
Contributions

2:15 PM The transient high-energy sky seen with H.E.S.S. - Fabian Schüssler (CEA)

2:45 PM On the origin of very-high-energy gamma-rays from gamma-ray bursts - Xiang-Yu Wang (Nanjing University)

3:15 PM Results from the SALT e-ROSITA transient followup programme - David A.H. Buckley (SAAO)
3:30 PM Coffee
Coffee
3:30 PM - 4:00 PM
4:00 PM
4:00 PM - 6:00 PM
Contributions

4:00 PM First Event Horizon Telescope results and future prospects - Sara Issaoun (Radboud University)

4:30 PM A roadmap for a compensium of supermassive black hole images - Venkatessh Ramakrishnan

4:45 PM The M87 ring in polarised light and polarimetryc synthetic data modelling - Iniyan Natarajan

5:00 PM Active galactic nuclei in the faint radio sky - Jack Radcliffe

5:15 PM Comprehensive power spectral density analysis of the Fermi-LAT gamma-ray light curves of selected blazars - Natalia Zywucka (North-West Uniwersity)

5:30 PM Disentangling the emission regions in blazars during flaring / transient states - Joleen Barnard (University of the Free State)

5:45 PM Modeling the spectral energy distributions and multi-wavelength polarisation of blazars - Hester Schutte
6:00 PM

6:00 PM - 8:00 PM
Tuesday, September 14, 2021
9:00 AM
9:00 AM - 10:45 AM
Contributions

9:00 AM Development of tools for SALT/RSS spectropolarimetry reduction: application to the blazar 3C279 - Justin Cooper (University of the Free State)

9:15 AM Modelling cosmic-ray transport in jets as a correlated random walk - Patrick Reichherzer (Ruhr-University Bochum)

9:30 AM Modellling the synchrotron emission of RMHD AGN jet simulations with the PLUTO par- ticle module - Izak van der Westhuizen

9:45 AM Optical variability modeling of newly identified blazars and blazar candidates behind the Magellanic Clouds - Natalia Zywucka (North-West Uniwersity)

10:00 AM Spectral analysis of S5 1803+784 in the recent flaring state - Joseph Omojola (University of the Witwatersrand)

10:15 AM A hadronic synchrotron mirror model for blazars - Application to 3C 279 - Laenita Oberholzer (North West University)

10:30 AM Results from the O3 observing run of the LIGO-Virgo Collaboration - ROSA POGGIANI
1:30 PM
1:30 PM - 3:30 PM
Contributions

1:30 PM Probing magnetic fields in active galactic nuclei jets - Evgeniya Kravchenko (Moscow Institute of Physics and Technology)

2:00 PM MeerKAT observations of radio galaxies - Imogen Whittam (Oxford University)

2:30 PM RXS J08182+0122 - an AGN with an unusually broad Keplerian rotator line profile - Hartmut Winkler (University of Johannesburg)

2:45 PM Simulations of stochastic long-term variability in leptonic models for external-Compton and synchrotron self-Compton dominated blazars - Hannes Thiersen (North-West University)

3:00 PM Simulating AGN light curves of blob injection in RMHD jet simulations - Daniel Kulik (N/A)

3:15 PM Jets and disc-winds from magnetically driven flows around black holes - Indu Kalpa Dihingia (Indian Institute of Technology Indore, India)
3:30 PM Coffee
Coffee
3:30 PM - 4:00 PM
4:00 PM
4:00 PM - 5:30 PM
Contributions

4:00 PM A decade of black hole X-ray binary transients - Phil Charles (University of Southampton)

4:30 PM Be X-ray binary 4U 1901+03: Cyclotron resonance scattering feature and its imprint on the pulse profile - aru beri (IISER Mohali, India)

4:45 PM Determining the orbital parameters of the gamma-ray binary HESS J0632+057 - Natalie Matchett (University of the Free State)

5:00 PM Gamma-gamma absorption in gamma-ray binaries - Brian van Soelen (University of the Free State)

5:15 PM On the long-term optical and X-ray behaviour of sibling SMC Be X-ray binaries SXP15.3 and SXP305 - Itumeleng Monageng (University of Cape Town)
Wednesday, September 15, 2021
1:30 PM
1:30 PM - 3:30 PM
Contributions

1:30 PM A study of the lobes of radio galaxy Hydra A using MeerKAT observations - Mika Naidoo (University of the Witwatersrand)

1:45 PM Geodetic and astrometric VLBI observations to monitor radio source structure in the South - Sayan Basu (University of the Witwatersrand)

2:00 PM Multi-wavelength study of HBL 1ES 1959+650 during various flares over 6 years of major activities - Sunil Chandra (SAAO)

2:15 PM The many ages of AGN - Kshitij Thorat

2:30 PM A shock-in-jet synchrotron mirror model - Markus Boettcher (North-West University)

2:45 PM ExHaLe-Jet: An extended hadro-leptonic jet model for blazars - Michael Zacharias (Laboratoire Univers et Théories, Observatoire de Paris, Université PSL, CNRS, Université de Paris, 92190 Meudon, France)

3:00 PM Modeling emissions from secondary electron-positron pairs created by absorption of gamma-rays in the broad-line region of blazars and their contribution to the broadband SED - Mfuphi Ntshatsha

3:15 PM Radiation from relativistic particles accelerated at shear layers in relativistic jets - Tej Chand (North-West university, Centre for Space Research)
3:30 PM Coffee
Coffee
3:30 PM - 4:00 PM
4:00 PM
4:00 PM - 5:45 PM
Contributions

4:00 PM Jets in accreting X-ray binaries - Andrzej Zdziarski

4:30 PM Hercules X-1 (Her X-1): New results from the past decade of observations - Denis Leahy (University Of Calgary)

4:45 PM The 2019 outburst of the accreting millisecond pulsar SAX J1808.4-3658 - Kelebogile Bonokwane (University of Cape Town)

5:00 PM X-ray spectropolarimetric observations of black holes and magnetars with IXPE and XL- Calibur - Henric Krawczynski (Washington University)

5:30 PM Monte-Carlo Applications for Partially Polarized Inverse External-Compton Scattering - Lente Dreyer (North-West University)
Thursday, September 16, 2021
1:30 PM
1:30 PM - 3:15 PM
Contributions

1:30 PM Probing AGN jets with high-energy neutrinos - Maria Petropoulou (National & Kapodistrian University of Athens)

2:00 PM Line of sight neutrinos and gamma-rays from blazars associated with IceCube neutri- nos - Soebur Razzaque (University of Johannesburg)

2:15 PM Shaken, not stirred: Test particles in binary black hole mergers - Pieter Van der Merwe (North-West University)

2:30 PM Simulation of the binary black hole merger rate with ultraluminous X-ray source pro- genitors - Lutendo Nyadzani (University of Johannesburg)

2:45 PM Linking the LHC and astrophysics with anomalies - Geoff Beck (University of the Witwatersrand)

3:00 PM A new approach to search for binary black holes with Fermi-LAT - Michael Kreter
3:30 PM Coffee
Coffee
3:30 PM - 4:00 PM
4:00 PM
4:00 PM - 6:00 PM
Contributions

4:00 PM Modeling globular clusters as multi-wavelength emitters - Hambeleleni Davids (University of Namibia, North-West University)

4:25 PM Constraining the magnetic field geometry of the millisecond pulsar PSR J0030+0451 using NICER and Fermi data - Anu Kundu (NWU)

4:40 PM Constraining the non-thermal emission site and geometry of AR Sco via optical po- larimetry - Louis Du Plessis (Centre for Space Physics, North-West University)

4:55 PM Low power pulsed emission at the spin period of the WD in AR Scorpii? - Quinton Kaplan (University of the Free State)

5:10 PM The detection of pulsed emission at the spin period of the white dwarf in AE Aquarii in MeerKAT and Fermi-LAT data - Spencer Tendai Madzime (University of the Free State)

5:25 PM Pulsar high-energy emission models - Alice Harding (Los Alamos National Laboratory)
Friday, September 17, 2021
1:30 PM
1:30 PM - 3:30 PM
Contributions

1:30 PM Astronomy for development: The namibian example - Hannah Dalgleish (University of Oxford)

2:00 PM Leptonic non-thermal emission from supernova remnants evolving in the circumstellar magnetic field - Iurii Sushch (North-West University)

2:15 PM Probing the nature of the young and energetic nebula Kes 75 via spatio-spectral modelling - Christo Venter (North-West University Potchefstroom Campus)

2:30 PM Spectral and temporal analysis of GRB 210410A detected by Fermi-LAT - Dimakatso Maheso (University of Johannesburg)

2:45 PM Fast radio bursts - Current state of the field - Zorawar Wadiasingh (NASA GSFC)

3:00 PM Phase-resolved spectroscopy of millisecond pulsars in the Third Fermi-LAT pulsar catalogue - Hend Yassin (North-West University)

3:15 PM Models for Sgr A* flares: from a general analytical to magnetic reconnection model - Anton dmytriiev (Observatoire de Paris)
3:30 PM

3:30 PM - 4:00 PM
4:00 PM
4:00 PM - 4:35 PM
Contributions

4:00 PM Advances with NICER on neutron stars, accreting black holes, and optical transients in nearby galaxies - Ronald Remillard (Massachusetts Institute of Technology)

4:30 PM Farewell - Soebur Razzaque (University of Johannesburg) Markus Boettcher (North-West University)

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