Astrophysics I

Presentations

• Abstract Withdrawn

  ORAL · Withdrawn

  Oct. 11, 2025, 1:00 PM – Oct. 11, 2025, 1:12 PM

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• Investigating Broadband Emission of the BL Lacertae Object 1ES 1959+650 between 2012 and 2024

  ORAL

  Oct. 11, 2025, 1:12 PM – Oct. 11, 2025, 1:24 PM

  Presenters

  • Connor McSorley

    • University of California Santa Cruz

  Authors

  • Connor McSorley

    • University of California Santa Cruz

  • Elliott Hamann

    • University of California, Santa Cruz

  • Amy Furniss

    • University of California, Santa Cruz

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• Ultra-Strongly Self-Interacting Dark Matter: From Phenomenology to Observables

  ORAL

  Oct. 11, 2025, 1:24 PM – Oct. 11, 2025, 1:36 PM

  Publication: Early formation of supermassive black holes from the collapse of strongly self-interacting dark matter: published in JCAP, https://iopscience.iop.org/article/10.1088/1475-7516/2025/01/060
  
  Little Red Dots from Ultra-Strongly Self-Interacting Dark Matter: has been submitted to JCAP, https://arxiv.org/abs/2507.03230
  
  Ultra-Strongly Self-Interacting Dark Matter Phenomenology (in prep, likely to be finished before the start of the conference),
  
  The clustering of Little Red Dots from Ultra-Strongly Self-Interacting Dark Matter (also in prep, but earlier stages)

  Presenters

  • Michael G Roberts

    • University of California, Santa Cruz

  Authors

  • Michael G Roberts

    • University of California, Santa Cruz

  • Aarna Garg

    • University of California, Santa Cruz

  • Stefano Profumo

    • University of California, Santa Cruz

  • Tesla Erin Jeltema

    • University of California, Santa Cruz

  • Lila Braff

    • University of California, Santa Cruz

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• Origin of Little Red Dots Explained by Ultra Self-Interacting Dark Matter

  ORAL

  Oct. 11, 2025, 1:36 PM – Oct. 11, 2025, 1:48 PM

  Publication: - Roberts, G. M., et al., Early formation of supermassive black holes from the collapse of strongly self-interacting dark matter, JCAP 2025, 025 (2025).
  
  - Roberts, G. M., et al., Little Red Dots from Ultra-Strongly Self-Interacting Dark Matter, JCAP 2025, 025 (2025), arXiv:2507.03230 [astro-ph.GA].

  Presenters

  • Aarna Garg

    • University of California, Santa Cruz

  Authors

  • Michael G Roberts

    • University of California, Santa Cruz

  • Lila Braff

    • University of California, Santa Cruz

  • Aarna Garg

    • University of California, Santa Cruz

  • Stefano Profumo

    • University of California, Santa Cruz

  • Tesla Erin Jeltema

    • University of California, Santa Cruz

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• Dwarf galaxies and star clusters in the new era of sky surveys

  ORAL

  Oct. 11, 2025, 1:48 PM – Oct. 11, 2025, 2:12 PM

  Publication: Romanowsky et al, 2025, Research Notes of the AAS, 9, 181;
  Romanowsky et al, 2024, Research Notes of the AAS, 8, 202;
  Tang et al., 2025, The Astrophysical Journal, 982, 1;
  Buzzo et al., 2025, Astronomy & Astrophysics, 695, A124;
  Tang et al., in preparation;
  Kenoly et al., in preparation;
  O'Brien et al., in preparation;
  Bains et al., in preparation;
  Coustier et al, in preparation;
  Shavor et al., in preparation

  Presenters

  • Aaron Romanowsky

    • San Jose State University

  Authors

  • Aaron Romanowsky

    • San Jose State University

  • Yimeng Tang

    • University of California, Santa Cruz

  • Kevin Bundy

    • UC Santa Cruz

  • Brittney Shavor

    • San Jose State University

  • Zachary Coustier

    • San José State University

  • Yashraj Bains

    • San Jose State University
    • San José State University

  • Lailani Kenoly

    • San Jose State University

  • Logan O'Brien

    • San Jose State University

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• Cluster Catalog Validation with Multiwavelength Data

  ORAL

  Oct. 11, 2025, 2:12 PM – Oct. 11, 2025, 2:24 PM

  Publication: E.K. Steelberg, T.E. Jeltema, J.H. O'Donnell, R. Solomon. "Cluster Catalog Validation with Multi-
  wavelength Data", Research Notes of the American Astronomical Society (currently in LSST-DESC collaboration wide review)

  Presenters

  • Ethan K Steelberg

    • University of California, Santa Cruz

  Authors

  • Ethan K Steelberg

    • University of California, Santa Cruz

  • Tesla Erin Jeltema

    • University of California, Santa Cruz

  • Jackson H O'Donnell

    • University of California, Santa Cruz

  • Rance Solomon

    • LAPP

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• Geodesic completion of big bangs from emergent geometry

  ORAL

  Oct. 11, 2025, 2:24 PM – Oct. 11, 2025, 2:36 PM

  Presenters

  • Liam O'Donnell

    • California Polytechnic State University, San Luis Obispo

  Authors

  • Liam O'Donnell

    • California Polytechnic State University, San Luis Obispo

  • Benjamin Shlaer

    • Cal Poly SLO
    • California Polytechnic State University, San Luis Obispo

  • Jada Young

    • California Polytechnic State University, San Luis Obispo

  • Brooke Berrios

    • California Polytechnic State University, San Luis Obispo

  • Cameron L Corley

    • California Polytechnic State University, San Luis Obispo

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• A New Explanation for the Nature of Black Holes Using a New Particle Called Cidtonium

  ORAL

  Oct. 11, 2025, 2:36 PM – Oct. 11, 2025, 2:48 PM

  Presenters

  • Gh. Saleh

    • Saleh Research Centre

  Authors

  • Gh. Saleh

    • Saleh Research Centre

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