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ECOs (Exotic Compact Objects Workshop) 2026

September 29, 2026 to October 1, 2026
IEAP CTU in Prague
Europe/Prague timezone

Contacts

Contribution List

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  1. 59. Registration Desk
    9/29/26, 8:45 AM
  2. 60. Opening and Welcome
    9/29/26, 9:00 AM

    ECOs Workshop 2026

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  3. 61. Introduction Talk: The Nature of Exotic Compact Objects
    Dr Vlasios Petousis (IEAP)
    9/29/26, 9:15 AM
  4. 62. Neutrino-Induced Polarization Rotation in Astrophysical Plasmas
    Dr Henrique Brito Câmara (IEAP)
    9/29/26, 9:45 AM
  5. 74. Trace Anomaly of Cold Matter from Neutron Stars,  Heavy-Ion Collisions and the Expanding Universe
    Prof. Bao-An Li (East Texas A&M University)
    9/29/26, 10:50 AM
  6. 78. Study of stability in fermion-boson stars
    Mr Daniel Nunez Trigueros
    9/29/26, 11:35 AM
  7. 76. Universality in Space–Time ω Modes of Quarkyonic Stars
    Mr Debabrata Day
    9/29/26, 1:40 PM
  8. 77. Observables and conformal properties of dark matter admixed isentropic neutron stars
    Mr Arijit Das
    9/29/26, 2:15 PM
  9. 75. Radial Oscillations and Stability Analysis of Two-Fluid Dark Matter Admixed Neutron Stars
    Dr Ankit Kumat (Institute of Physics of the Czech Academy of Sciences)
    9/29/26, 3:20 PM
  10. 79. Day 1 Scientific Discussion
    9/29/26, 3:55 PM
  11. 80. End of Day 1
    9/29/26, 4:55 PM
  12. 64. Nuclear Matter Constraints from Compact Stars
    Mr Ioannis Stergakis (Department of Physics, Aristotle University)
    9/30/26, 9:30 AM
  13. 65. Probing the Dark Sector in Exotic Compact Objects: Two-Fluid Modeling and Dark Neutron Decay
    Dr Michalis Vikiaris (University of Thessaloniki)
    9/30/26, 10:05 AM
  14. 63. The Nuclear Physics of Exotic Compact Objects
    Prof. Charalampos Moustakidis (Department of Physics, Aristotle University)
    9/30/26, 11:10 AM
  15. 68. Questions and discussion on the morning presentations
    9/30/26, 11:45 AM
  16. 67. Effects of Direct Urca Bulk Viscosity on Neutron Stars Dissipative Tidal Deformability
    Dr Alkiviadis Kanakis - Pegios (University of Thessaloniki)
    9/30/26, 1:30 PM
  17. 69. Equation of State of Neutron Star Cores
    Prof. Bao-Jun Cai (Fudan University)
    9/30/26, 2:35 PM
  18. 70. Day 2 scientific discussion
    9/30/26, 3:20 PM
  19. 72. Machine Learning Techniques for Distinguishing Hadronic and Quark Compact Stars
    Ms Despoina Neraki (University of Thessaloniki)
    10/1/26, 9:00 AM
  20. 73. Hadron-Quark Crossover: The Kapusta Exponential Switching Function
    Mr Giorgos Tsalis (University of Thessaloniki)
    10/1/26, 9:35 AM
  21. 81. From Little Bangs to Anti-matter Nucleosynthesis
    Prof. Yu-Gang Ma (Fudan University)
    10/1/26, 10:10 AM
  22. 82. Ring-down Diagnostics for Hairy Black Holes and Compact Objects Beyond Kerr
    Ms Ariadna Palomino
    10/1/26, 11:15 AM
  23. 83. Questions and discussion on the morning presentations
    10/1/26, 11:50 AM
  24. 84. Low-mass and low-radius compact objects – a new branch of neutron stars with kaon condensate ?
    Dr Martin Veselsky (IEAP)
    10/1/26, 1:30 PM
  25. 85. Quadrupole f-mode oscillations damping time: A signature of compact objects internal structure
    Dr Vlasios Petousis (IEAP)
    10/1/26, 2:35 PM
  26. 86. Day 3 - Final scientific discussion, workshop conclusions
    10/1/26, 3:10 PM
  27. 87. Closing ECOs Workshop
    10/1/26, 3:40 PM
  28. 54. Effects of direct Urca bulk viscosity on neutron stars dissipative tidal deformability
    Alkiviadis Kanakis-Pegios (Aristotle University of Thessaloniki)

    In our study we investigated the impact of the direct Urca-driven bulk viscosity of dense nuclear matter containing neutrons, protons, and electrons on the dissipative tidal deformation of neutron stars. The direct Urca process is treated as a mechanism that restores the chemical equilibrium. The bulk-viscous dissipative process affects the tidal deformation of neutron stars, especially in a...

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  29. 71. End of Day 2
  30. 66. Lunch Break
  31. 53. Machine Learning Techniques for Distinguishing Hadronic and Quark Compact Stars
    Despoina Neraki (Aristotle University of Thessaloniki)

    Compact stars provide a unique environment for investigating the properties of matter at densities far beyond those achievable in terrestrial laboratories. Despite significant progress in both theoretical modeling and astrophysical observations, determining their internal composition remains a major challenge. In particular, distinguishing hadronic neutron stars from quark stars is difficult...

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  32. 56. Neutrino-induced polarization rotation in astrophysical plasmas
    Dr Henrique Brito Câmara (Institute of Experimental and Applied Physics (IEAP), Czech Technical University (CTU) in Prague)

    \documentclass[universe,article,submit,moreauthors,pdftex]{mdpi}

    %----------------------------------------
    % Title
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    \Title{Neutrino-induced polarization rotation in astrophysical plasmas}

    %----------------------------------------
    % Authors
    %----------------------------------------
    \Author{H.~B. C\^amara $^{1,}$*, A. Smetana $^{1}$ and A.~A....

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  33. 58. Nuclear Matter Constraints from Compact Stars
    Ioannis Stergakis (School of Physics, Aristotle University of Thessaloniki)

    One of the basic challenges in modern nuclear astrophysics is the determination of the behavior of dense nuclear matter at the core of compact objects. While the surface and crust of these objects exhibit conditions that can be replicated in a terrestrial laboratory,their cores exhibit densities exceeding those of nuclear saturation, making it impossible to reproduce any of phenomena with...

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  34. 57. Precision-Dependent EOS Inference from Neutron-Star Radii: Universal Inverse Mappings and Nonlinear Filtering
    Bao-An Li (East Texas A&M University)

    Understanding the equation of state (EOS) of dense, neutron-rich matter is a central goal of neutron-star physics and is essential for identifying possible exotic phases and phase transitions in compact stars. To more precisely constrain the EOS, future high-precision X-ray and gravitational wave observatories are proposed to measure the radii of neutron stars (NSs) with an accuracy better...

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  35. 50. Ringdown Diagnostics for Hairy Black Holes and Compact Objects Beyond Kerr
    Ariadna Uxue Palomino Ylla (Nagoya University)

    \documentclass[universe,article,submit,moreauthors,pdftex]{mdpi}

    %----------------------------------------
    % Title
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    \Title{Ringdown Diagnostics for Hairy Black Holes and Compact Objects Beyond Kerr}

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    % Authors
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    \Author{Ariadna Uxue Palomino Ylla $^{1,2,*}$,...

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  36. 88. Study of stability in fermion-boson stars
    Mr Daniel Nunez Trigueros (UNAM)

    \documentclass[universe,article,submit,moreauthors,pdftex]{mdpi}

    %----------------------------------------
    % Title
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    \Title{Study of stability in fermion-boson stars}

    %----------------------------------------
    % Authors
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    \Author{Daniel Núñez-Trigueros $^{1}$\orcidA{}*, Omar Velasco-Castillo $^{1}$,...

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  37. 51. Universality in Space–Time $\omega$ modes of Quarkyonic Stars
    Debabrata Dey (Institute of Physics, Bhubaneswar)

    Gravitational-wave $\omega$ modes provide a powerful probe of the internal composition of neutron stars, offering direct insight into the properties of matter at supranuclear densities that cannot be accessed through electromagnetic observations. In this work, we perform a detailed investigation of the $\omega$-mode oscillation spectrum of compact stars containing quarkyonic matter. The...

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