Login

EPTA meeting 2025 @ SISSA

Nov 17 – 21, 2025
SISSA (Main building)
Europe/Rome timezone

Administrative contact

Session

Day 3

Nov 20, 2025, 10:25 AM
128-129 (SISSA (Main building))

128-129

SISSA (Main building)

Via Bonomea 265, 34136 Trieste, Italy

Conveners

Day 3: New Physics / CWs / Discrete Sources

  • irene ferranti (University of Milano-Bicocca)

Presentation materials

There are no materials yet.

  1. 33. Session Introduction
    irene ferranti (University of Milano-Bicocca)
    11/20/25, 10:25 AM
  2. 3. Constraints on Ultralight Scalar and Dark photon Dark Matter from PPTA-DR3 and EPTA-DR2
    XiaoSong Hu (Beijing Normal University)
    11/20/25, 10:30 AM

    The cold dark matter (CDM) model successfully describes the Universe on large scales, yet faces challenges at sub-galactic scales. Ultralight dark matter (ULDM), with particle masses around $10^{-22}$ eV, offers a promising solution to these small-scale issues. Pulsar timing arrays (PTAs), originally designed to detect nanohertz gravitational waves, also provide a sensitive probe for ULDM...

    Go to contribution page
  3. 6. Exploring Neural Network Methods for Sky Localisation of PTA sources
    Ludovica Carbone (Università degli Studi di Milano-Bicocca)
    11/20/25, 10:45 AM

    Accurate localisation of continuous gravitational waves (CGWs) from supermassive black hole binaries (SMBHBs) remains one of the key challenges in Pulsar Timing Array (PTA) data analysis. Traditional searches based on the $\mathcal{F}_e$ statistic provide a robust analytic framework, but the resulting sky maps are strongly affected by the PTA antenna pattern, which redistributes signal power...

    Go to contribution page
  4. 2. Studying eccentric supermassive black hole binaries in PTA
    Sara Manzini (APC - Université Paris Cité)
    11/20/25, 11:00 AM

    The most plausible astrophysical sources for PTA experiments are supermassive black hole binaries (SMBHBs), which emit gravitational waves (GWs) that incoherently superpose to form a stochastic GW background (SGWB). Particularly massive and nearby SMBHBs produce strong signals that may stand out above the GWB. PTAs will observe the early inspiral of these systems at large orbital separations,...

    Go to contribution page
  5. 29. Constraining Preferred-Frame Effects in Gravity with Binary Pulsars
    Massimo Vaglio (SISSA)
    11/20/25, 11:15 AM

    We constrain Einstein-Aether gravity, a leading alternative to General Relativity that introduces a preferred-frame via a dynamical time-like vector field, using high-precision pulsar timing observations from EPTA. Our analysis incorporates both conservative and dissipative first post-Newtonian corrections and utilizes full times of arrival from multiple pulsars, processed with Vela.jl, a...

    Go to contribution page
  6. 8. Light Bending Under General Relativity: A study of pulsar blackhole binaries
    Jyotijwal Debnath (INAF Cagliari)
    11/20/25, 11:30 AM

    We present a fully general relativistic formalism to study propagation delays in the radio signals of pulsars in binary systems, arising from the gravitational bending of light. This bending delay is a significant contribution in neutron star–neutron star systems and becomes even more pronounced in neutron star–black hole binaries. Applying our framework to hypothetical neutron star–black hole...

    Go to contribution page
  7. 17. Sardinia/Cagliari
    Delphine Perrodin (INAF - Osservatorio Astronomico di Cagliari)
    11/20/25, 11:45 AM
Building timetable...