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    HEASA 2026 (29 Sep - 02 Oct)

    29 September 2026 to 3 October 2026
    Africa/Johannesburg timezone

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    Session

    Other High-Energy Sources 2 / AGN 4 / Education and Outreach 1

    2 Oct 2026, 13:00

    Description

    Chair: Geoff Beck

    Presentation materials

    There are no materials yet.

    1. 34. CM Microscopii: an ER UMa-type dwarf nova with a permanent-superhumper standstill
      Yusuke Tampo (South African Astronomical Observatory)
      02/10/2026, 13:00
      Other High-Energy Sources
      Contributed Talk

      Accretion discs experience various kinds of instabilities, observed as energetic events in our Universe. Compact binaries especially offer a unique opportunity to study these instabilities as transient phenomena. Here we report optical studies of the cataclysmic variable CM Mic, characterized by highly frequent dwarf nova outbursts driven by thermal-viscous instability and occasional...

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    2. 44. The X-ray and optical emission of the intermediate polar Swift J0614.0+1709
      Nikita Rawat (South African Astronomical Observatory)
      02/10/2026, 13:13
      Other High-Energy Sources
      Contributed Talk

      Attached.

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    3. 59. Frequency- and timescale-dependent variability of ALMA blazar calibrators
      Eli Kasai (University of Namibia)
      02/10/2026, 13:26
      Active Galactic Nuclei
      Contributed Talk

      We present initial efforts towards the construction of a catalogue of frequency- and timescale-dependent variability properties of blazars observed as flux calibrators with the Atacama Large Millimeter/submillimeter Array (ALMA), exploiting multi-epoch observations spanning Bands 3–10. Multi-epoch light curves are constructed for suitably sampled sources, from which complementary variability...

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    4. 69. Multi-Domain Blazar Modelling with B13
      Joshua Robinson (North-West University)
      02/10/2026, 13:39
      Active Galactic Nuclei
      Contributed Talk

      In this work, we demonstrate the application of the Gammapy Python package for simultaneous multi-wavelength spectral fitting of low level data across multiple energy decades. We have integrated the B13 lepto-hadronic emission code into the Gammapy framework, enabling comprehensive multi-instrument data analysis. Additionally, we incorporate IceCube neutrino detector response functions based...

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    5. 71. Spectro-Polarimetric Observations of TeV Sources (SPOTS): Results and updates
      Izak van der Westhuizen
      02/10/2026, 13:52
      Active Galactic Nuclei
      Contributed Talk

      Blazars are a subclass of Active Galactic Nuclei (AGN) that contain relativistic jets oriented towards the observer. The Spectral Energy Distribution (SED) of these sources are typically dominated by two broad non-thermal components. The lower-energy component is produced by synchrotron emission from relativistic electrons in the jet, while the high-energy component can be a combination of...

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    6. 4. Astronomy for a Better World!
      Charles Takalana (IAU-OAD), Dr Joyful Mdhluli (IAU-OAD)
      02/10/2026, 14:05
      Outreach and Education
      Contributed Talk

      For over a century, the International Astronomical Union (IAU) has promoted and safeguarded astronomy worldwide through its Office of Astronomy for Development (OAD), hosted in South Africa by the National Research Foundation (NRF) and supported by the South African Department of Science, Technology, and Innovation (DSTI). The OAD has established a network of 11 regional offices globally and...

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