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Black holes at different flavours - WE - Heraeus - 2026 EAS Workshop for Early Career Research in Astronomy

21–25 Sept 2026
Europe/Warsaw timezone

HERA26

Contribution List

58 out of 58 displayed
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  1. 67. Analytic Models of the Kerr Black Hole Accretion Discs: A Minimalistic Picture
    Marek Abramowicz (CAMK PAN)
    21/09/2026, 09:30
  2. 6. Black Holes as Non-Abelian Anyon Condensates: Implications for the Information Paradox
    Sabin Roman (Jožef Stefan Institute)
    21/09/2026, 11:30
  3. 8. Charged accretion Tori around Schwarzschild black hole: self-generated electromagnetic fields and their effect on disk structure
    Serena Gambino (Scuola Superiore Meridionale)
    21/09/2026, 11:55
  4. 11. Properties and signatures of IMBH-TDEs in MOCCA Star Cluster Models
    Sakshi Maurya (Astronomical Observatory, University of Warsaw)
    21/09/2026, 12:20
  5. 9. Radiative GRMHD simulations of stable sub-Eddington accretion discs
    Debora Lančová
    21/09/2026, 14:15
  6. 38. General Relativistic Magnetohydrodynamic Simulations of Collapsars with Multipole Self-Gravity
    Piotr Płonka (Center for Theoretical Physics of the Polish Academy of Sciences)
    21/09/2026, 14:40
  7. 12. The Role of X-ray Irradiation in the Variability of Unstable Black hole Accretion disks
    Pulkit Ojha (Centrum Fizyki Teoretycznej PAN)
    21/09/2026, 15:05
  8. 37. Powering the Transient Sky: Extreme Efficiency Jet Production in BH Accretion
    Antonios Nathanail
    21/09/2026, 16:00
  9. 72. Managing Director of WE-Heraeus-Stiftung
    Stefan Jorda (HERAEUS)
    21/09/2026, 16:55
  10. 24. What HERA programme is?
    Andreas Burkert
    21/09/2026, 17:20

    TBD

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  11. 47. About Warsaw, About CAMK PAN
    Agata Rozanska (CAMK PAN)
    21/09/2026, 17:35
  12. 69. Science from black hole imaging
    Monika Moscibrodzka, Monika Mościbrodzka
    22/09/2026, 09:30
  13. 13. Modeling the Multi-Wavelength Signature of Sagittarius A*
    Eleni Antonopoulou (Academy of Athens, University of Athens)
    22/09/2026, 11:30
  14. 15. General relativistic effects at the heart of accreting Sgr A* light curve asymmetry
    Valentina Rosa (Astronomical Institute of the Czech Academy of Sciences)
    22/09/2026, 11:55
  15. 16. Sgr A* Polarimetry with Spatially and Temporally Resolved Rotation Measure Maps
    Tintin Nguyen (Harvard University)
    22/09/2026, 12:20
  16. 17. Spin estimations from lensing of hot spot around SMBHs: From empircal relations to machine learning
    Aristomenis Yfantis (Instituto de Astrofisica de Andalucia)
    22/09/2026, 14:15
  17. 18. Ghosts of the Minispiral: modeling the hidden black hole population of the Galactic Center
    Matúš Labaj (Masaryk University)
    22/09/2026, 14:40
  18. 41. Investigating magnetized outflows from rotating black holes
    Dr Bestin James (Masaryk University)
    22/09/2026, 15:05
  19. 19. Direct observation of supermassive black hole binaries with spaceborne VLBI
    Ben Hudson
    22/09/2026, 16:00
  20. 20. Picosecond Intensity Interferometry to resolve accreting sources
    Gilles Koziol (University of Geneva)
    22/09/2026, 16:25
  21. 56. Tidal Disruption Events, Compact Symmetric Objects, Black Holes, Mass Transfer, Stellar Evolution
    Andrey Sandomirsky (The Hebrew University of Jerusalem)
    22/09/2026, 16:50
  22. 68. Accretion and acceleration of matter around SMBH in GR regime
    Vladimir Karas (Astronomical Institute of the Czech Academy of Sciences)
    23/09/2026, 09:30
  23. 21. Accretion-powered flares from black-hole–disk collisions in galactic nuclei
    Joaquin Pelle (Max Planck Institute for Gravitational Physics (Potsdam))
    23/09/2026, 11:30
  24. 22. AGN Disk Tensions from an Inconsistent α-Disk Closure (final closure)
    Mohamad H. Naddaf (University of Liege, Belgium)
    23/09/2026, 11:55
  25. 23. From spectral energy distribution to line suppression: probing the physics of the X-ray-weak WLQ SDSS J101353.45+492758.1
    Ms Laetitia Gibaud (Faculty of Physics, University of Bialystok, Poland)
    23/09/2026, 12:20
  26. 25. Ambiguous Nuclear Transients: A Novel, Mysterious, Highly Energetic Mode of SMBH Accretion
    Matthew Quilt (University of Southampton)
    23/09/2026, 14:15
  27. 26. State transitions in changing-look AGNs
    Mr Biswaraj Palit (CAMK PAN)
    23/09/2026, 14:40
  28. 27. Magnetized inner disks explain Changing-Look AGN
    Marios Kouzis (Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences)
    23/09/2026, 15:05
  29. 29. Disrupted Stars and/or Unstable Disks?: Two Challenging AGN Transients
    Marzena Sniegowska (CAMK PAN, CFT PAN)
    23/09/2026, 16:00
  30. 30. Geometry and Spectral Properties of the Warm Corona in AGN
    Parikshit Partha Biswas (Nicolaus Copernicus Astronomical Center, Warszawa)
    23/09/2026, 16:25
  31. 10. AT 2020xys: Discovery, Classification, and Multi-Wavelength Observations of a Bowen Fluorescence Flare in an AGN
    Joysankar Majumdar (Astronomical Observatory, University of Warsaw)
    23/09/2026, 16:50
  32. 70. New Perspectives on the Universe in the gravitational wave multi-messenger astronomy era
    Samaya NISSANKE
    24/09/2026, 09:30
  33. 31. On the maximum black hole mass from updated stellar wind prescriptions
    Alex Gormaz-Matamala (Astronomický ústav Akademie věd České republiky (ASU))
    24/09/2026, 11:30
  34. 34. Beyond the first galaxies Primordial Black Holes shine
    Antonio Matteri (Scuola Normale Superiore)
    24/09/2026, 11:55
  35. 53. Constraints on modified gravity using gravitational waves
    Pawan Kumar Gupta (CAMK, Warsaw, Poland)
    24/09/2026, 12:20
  36. 35. Chemical Evolution and Ejecta Diversity in Post-Merger Black Hole Accretion Disk Outflows
    Mr Joseph Saji (Center for Theoretical Physics, PAN)
    24/09/2026, 14:15
  37. 36. Neutrino diffuse flux from magnetically-driven AGN coronae
    Despina Karavola (National and Kapodistrian University of Athens)
    24/09/2026, 14:40
  38. 57. A physically motivated AGN monitoring program to measure the Hubble constant
    Shivangi Pandey (Center for theoretical Physics PAS)
    24/09/2026, 15:05
  39. 48. Testing Black-Hole Formation with LIGO: Evidence for a Bimodal Black-Hole Mass Distribution
    Mr Phillipp Podsiadlowski (University of Oxford)
    24/09/2026, 15:30
  40. 71. Ergomagnetospheres, Ejection Disks and Wave Optics in M87 and SS433
    Roger Blandford
    25/09/2026, 09:30
  41. 39. Black hole jet reactivation through magnetic polarity reversal in GRMHD simulations
    Wen Xuan Sia
    25/09/2026, 11:30
  42. 49. Testing relativistic jet models with the Event Horizon Telescope
    Jan Röder (IAA-CSIC)
    25/09/2026, 11:55
  43. 54. Centaurus A: Jet Chemical Enrichment and Ultra-High-Energy Cosmic-Ray Production
    Ana Laura Müller (FZU - Institute of Physics of the Czech Academy of Sciences)
    25/09/2026, 12:20
  44. 42. Hybrid Modeling of Particle Acceleration in Astrophysical Jets
    Kaushik Satapathy (Instituto de Plasmas e Fusão Nuclear)
    25/09/2026, 14:15
  45. 43. Blueberry and Green Pea galaxies live in low density environments
    Maitrayee Gupta (Astronomical Institute of the Czech Academy of Sciences)
    25/09/2026, 14:40
  46. 44. Intra-night optical variability of Blazars from high-cadence observations with the Large Array Survey Telescope (LAST)
    Simone Garrappa (Weizmann Institute of Science)
    25/09/2026, 15:05
  47. 45. Probing Relativistic Jets Through Multiwavelength Observations of Blazars
    SANGEETHA KIZHAKKEKALAM (Janusz Gil Institute of Astronomy, University of Zielona Gora, Poland)
    25/09/2026, 16:00
  48. 55. Microquasars observed in the γ-ray band :the parsec-scale outer jets of SS 433
    Michelle Tsirou (Institute of Physics of the Czech Academy of Sciences (FZU))
    25/09/2026, 16:25
  49. 46. Tracing Supermassive Black Hole Jet Activity from Sub-Kiloparsec to Megaparsec Scales in Giant Radio Galaxies using LOFAR and LOFAR-VLBI
    SAGAR SETHI (University of Warmia and Mazury in Olsztyn, Poland)
    25/09/2026, 16:50
  50. 62. Detectability of the eclipses of galactic nuclei by stars
    Michal Zajaček (Masaryk University, Brno, Czech Republic)

    We investigate the possibility of detecting stellar eclipses of millimeter radio cores in nearby radio-loud active galactic nuclei. At millimeter wavelengths, the compact radio core can be partially occulted by large evolved stars orbiting the central supermassive black hole within a dense nuclear star cluster. We show that stars with radii >= 500 Rsun can produce the eclipses with relative...

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  51. 59. Magnetized Accretion Disk Around a Reissner–Nordström Naked Singularity
    Maria Koper (Wydział Fizyki Uniwersytetu Warszawskiego)

    We present magnetohydrodynamic simulations of a thin accretion disk around a Reissner–Nordström naked singularity, modeled with our pseudo-Newtonian potential. This potential accurately reproduces the orbital frequency, including the radius at which it reaches a maximum and eventually vanishes. The latter defines the zero-gravity sphere, below which the net force is repulsive. Our results show...

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  52. 2. Managing Director of WE-Heraeus-Stiftung
    Stefan Jorda (HERAEUS)

    Institutional Talk

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  53. 58. On the Origin of Asymmetric Inflow-Outflows Structures in Viscous Transonic Accretion Discs
    Sanjit Debnath (Aryabhatta Research Institute of Observational Sciences (ARIES), India)

    In transonic advective accretion flows, the presence of a shock gives rise to a hot, dense post-shock region that can act as the launching site of outflows. When viscosity is included, dissipation within this region increases the thermal energy of the flow, leading to a stronger pressure gradient that can drive more efficient mass ejection. The resulting outflows are not necessarily symmetric...

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  54. 61. Probing frame-dragging effects in black hole binaries through LFQPO phase-resolved spectroscopy
    Seshadri Majumder (Kyoto University)

    Quasi-periodic oscillations (QPOs) are coherent X-ray timing features frequently observed in black hole X-ray binaries (BH-XRBs), originating from the innermost region of the accretion disc-corona system where general relativistic effects are expected to be in play. Among the proposed QPO models, the Lense-Thirring (LT) precession of the inner hot flow predicts a systematic modulation of the...

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  55. 60. Quantum vortices in an accretion disk during the tidal stripping of a cold white dwarf
    Dr Marek Nikołajuk (University of Białystok, Faculty of Physics)

    We investigate the tidal stripping of a cold helium white dwarf (WD) by a stellar-mass black hole (BH). Due to the degenerate nature of the WD, we expect quantum effects to play a significant role in the dynamics. To capture these effects, we use a full quantum hydrodynamic framework to simulate the formation of the accretion disk. We model the WD as a Bose–Fermi droplet consisting of...

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  56. 64. Warm corona
    Agata Rozanska (CAMK PAN)
  57. 63. X- ray variability study of the NLS1 galaxy Ark 564
    NIKITA S ARUN (Providence Women's College)

    We present a broadband X-ray spectral study of the narrow-line Seyfert 1 galaxy Ark 564 using a long-term monitoring dataset obtained with the X-Ray Telescope (XRT) onboard Neil Gehrels Swift Observatory. Ark 564 is known for its strong X-ray variability and prominent soft X-ray excess, making it an excellent laboratory for investigating accretion processes. We analyze more than 70 Swift/XRT...

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  58. 65. X-ray Spectral Evolution of the Changing-Look Blazar OQ 334
    P. K. Navaneeth

    The blazar B2 1420+32 (OQ 334, z = 0.682) has recently emerged as a primary laboratory for studying the "changing-look" (CL) phenomenon in jetted active galactic nuclei, characterized by transitions between FSRQ and BL Lac states. We present a detailed investigation into the complex nature of its X-ray emission using Swift-XRT observations spanning MJD 58095--60580. Using Bayesian Blocks...

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