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EREP 2026, Spanish & Portuguese Relativity Meeting

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Universidad de Murcia, Campus de la Merced (Murcia, Spain)

Universidad de Murcia, Campus de la Merced

Murcia, Spain

Paraninfo Campus de la Merced C. Santo Cristo 1 30001 Murcia Spain
Description
The Spanish-Portuguese Relativity Meetings (EREPs) are a long-standing scientific tradition that began in 1977. Since then, they have served as a key forum for the Portuguese and Spanish communities working in General Relativity and Gravitation, promoting collaboration and the exchange of ideas across a broad range of topics. Organized annually by different research groups from both countries, EREPs have become the most prominent conference on gravitation and relativity in the Iberian Peninsula.
 
The EREP 2026 edition will take place in Murcia, Spain, from May 25th to 29th, 2026. We warmly invite you to join us for a week of stimulating scientific discussions in a vibrant and sunny Mediterranean setting. As in previous editions, EREP 2026 will bring together researchers from across the Iberian Peninsula and beyond, offering a dynamic program in a friendly and collaborative atmosphere.
 
The conference will be held on-site at the Paraninfo de la Universidad de Murcia, which is located at the city center and 40 km far from the Mediterranean Sea.
 

Please have a look at the Transportation section on how to travel to Murcia.

Registration is open until May 2 

Call for abstracts is open until April 19 (extended until April 24)

Registration fee:

  • SEGRE members: 250€
  • Non-members: 290€

 

Instructions for carrying out the payment will be provided after submitting the registration form.  

 

Invited Speakers:

  • Tomislav Andric (Gran Sasso Science Institute)

  • Llibert Aresté Saló (KU Leuven)

  • Marina David (KU Leuven)

  • Maxime Gadioux (Cambridge U.)

  • Robie Hennigar (Durham U.)

  • Hector Olivares (Aveiro U.)

  • Mairi Sakellariadou (King's College London)
  • Chiara Toldo (ULB - Brussels)
  • Miguel Zumalacárregui (Max Planck Institute- Potsdam)

Public Talk

  • Tomás Ortín (IFT Madrid)

 

Scientific Committee:

  • Barceló, Carlos (IAA-CSIC)
  • Bastero, Mar (U. Granada)
  • Beltrán, Jose (U. Salamanca, IUFFyM)
  • Bueno, Pablo (U. Barcelona)
  • Cardoso, Vitor (Niels Bohr Institute and Lisbon, IST Lisboa)
  • Dias, Oscar (U. Southampton)
  • Emparan, Roberto (U. Barcelona & ICREA)
  • Figueras, Pau (QMUL)
  • Herdeiro, Carlos (U. Aveiro)
  • Martín Benito, Mercedes (IPARCOS, UCM)
  • Martín Moruno, Prado (IPARCOS, UCM)
  • Olmo, Gonzalo (U. Valencia & IFIC)
  • Ortín, Tomás (IFT-UAM/CSIC)
  • Rocha, Jorge (ISCTE, Lisboa)

Organizing Committee:

  • Belmonte Aix, Raúl
  • Bonetti, Federico
  • Cano Molina-Niñirola, Pablo A.
  • Fernández Melgarejo, José J. 
  • Giorgi, Giacomo
  • Glampedakis, Kostas
  • Molina Vilaplana, Javier
  • Romano, Luca 
  • Simón Félix, Elena
  • Torrente-Lujan, Emilio

 

SEGRE grants. SEGRE will offer a limited number of grants to support the participation of Ph.D. students and postdocs. Applications for financial support should be made by email (erep2026@um.es) and include a brief CV and a motivation letter (maximum 1 page for each document, preferably pdf). The deadline for grant applications is April 1st, 2026. Preference for financial support will be given to applicants who submit a contribution to the conference.

 

   

 

 

 

Map_Buses_and_Tram.pdf
map_campus.pdf
map_hotels.pdf
Organization
Participants
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  • Monday 25 May
    • Registration
    • Welcome
    • Invited talk: Miguel Zumalacárregui

      Miguel Zumalacárregui
      Gravitational lensing of waves: a new window into astrophysics, dark matter & gravity

      • 1
        Gravitational lensing of waves: a new window into astrophysics, dark matter & gravity

        Just like light, gravitational waves (GWs) are gravitationally lensed by massive objects in the Universe. Moreover, their low frequency, phase coherence, and lack of absorption make GWs complementary to lensed electromagnetic sources. In addition to gravitational magnification and the formation of multiple images, lensed GWs exhibit genuine wave-propagation effects such as diffraction, that is, the bending of the signal’s wavefront. Lensing diffraction imprints a frequency-dependent modulation on the signal, encoding information about the lens mass and its distribution. I will describe the rich phenomenology of lensing diffraction as a means to discover high-redshift, magnified binary mergers and to probe small-scale structures, including dark matter. In theories beyond GR, novel propagation effects such as birefringence and dispersion—polarization- and frequency-dependent phase shifts—provide new tests of cosmological gravity and dynamical dark energy. In addition to recent theoretical developments, I will present the latest analysis of GW231123, the first candidate for a diffracted and magnified compact binary coalescence.

        Speaker: Dr Zumalacarregui, Miguel (Max Planck Institute for Gravitational Physics - Albert Einstein Institut)
    • 10:30
      Coffee break
    • 40' Contribution: Diego Rubiera-Garcia
      • 2
        Black hole imaging as a probe for non-Kerr physics

        The field of black hole imaging - the observational appearance of a black hole when illuminated by its accretion disk - has quickly become one of our main tools in order to test the strong-field regime of the gravitational interaction. In this talk I will discuss the conceptual foundations of this field and discuss the features of images of several kinds of modified black holes and horizonless ultra-compact objects.

        Speaker: Prof. Rubiera-Garcia, Diego (Complutense University of Madrid)
    • 20' Contribution: Diego Sáez-Chillón Gómez
      • 3
        Compact objects physics in the realm of multi-messenger astronomy

        The reconstruction of the images of the supermassive objects at the centres of the M87 and Milky Way galaxies show two objects characterized by a central depression in luminosity (the so-called shadow) and a ring-shaped light structure around them. Both properties are closely linked to the emission intensity profile of the accretion disk and to the structure of spacetime. In addition, the detection of gravitational waves has made possible to study compact objects during the merger of binary systems of -mainly- black holes in order to test the Kerr family of solutions. In this talk, I will explain, on the one hand, the spacetime effects that influence the image obtained and how it may be used in the future to discern the existence of objects beyond the Kerr paradigm. Finally, I will also present the correspondence that exists between the shadow images and the spectrum of quasinormal modes of gravitational waves when such objects are perturbed. This is expected to play a fundamental role for the future multi-messenger astronomy of ultracompact objects.

        Speaker: Prof. Sáez-Chillón Gómez, Diego
    • 20' Contribution: João Santos
    • 20' Contribution: Manuel Del Piano
    • 20' Contribution: Vojtech Pravda
    • 13:00
      Lunch
    • Invited talk: Tomislav Andric

      Miguel Zumalacárregui
      Gravitational lensing of waves: a new window into astrophysics, dark matter & gravity

    • Coffee break
    • Gong show
    • Welcome Cocktail
  • Tuesday 26 May
    • Invited talk: Robie Hennigar

      Miguel Zumalacárregui
      Gravitational lensing of waves: a new window into astrophysics, dark matter & gravity

    • 10:30
      Coffee break
    • 40' Contribution: Adolfo Cisterna
    • 20' Contribution: Ángel Murcia
    • 20' Contribution: Ernesto Contreras
    • 20' Contribution: Tomáš Málek
    • 20' Contribution: Cristóbal Laporte
    • Lunch
    • Invited talk: Hector Olivares

      Miguel Zumalacárregui
      Gravitational lensing of waves: a new window into astrophysics, dark matter & gravity

    • 16:30
      Coffee break
    • 20' Contribution: Filipe Moura
    • 20' Contribution: Francisco Silva
    • 20' Contribution: Eneko Aranguren
  • Wednesday 27 May
    • Invited talk: Marina David

      Miguel Zumalacárregui
      Gravitational lensing of waves: a new window into astrophysics, dark matter & gravity

    • 10:30
      Coffee break
    • 40' Contribution: Sumanta Chakraborty
    • 20' Contribution: David Pereñíguez Rodríguez
    • 20' Contribution: Pratik Wagle
    • 20' Contribution: Marta Cocco
    • 20' Contribution: Chiranjeeb Singha
    • Lunch
    • Invited talk: Llibert Aresté Saló

      Miguel Zumalacárregui
      Gravitational lensing of waves: a new window into astrophysics, dark matter & gravity

    • Coffee break
    • 20' Contribution: Pantelis Pnigouras
    • 20' Contribution: Leyla Ogurol
    • 20' Contribution: Zakaria Belkhadria
  • Thursday 28 May
    • Invited talk: Mairi Sakellariadou

      Miguel Zumalacárregui
      Gravitational lensing of waves: a new window into astrophysics, dark matter & gravity

    • Coffee break
    • 40' Contribution: José Beltrán Jiménez
    • 20' Contribution: Lucía Castells
    • 20' Contribution: Ruchika Ruchika
    • 20' Contribution: Marcello Musso
    • 20' Contribution: Adrian del Rio
    • Lunch
    • 4
      Segre Meeting
    • Social Dinner
  • Friday 29 May
    • Invited talk: Maxime Gadioux

      Miguel Zumalacárregui
      Gravitational lensing of waves: a new window into astrophysics, dark matter & gravity

    • Coffee break
    • 40' Contribution: Javier Olmedo
    • 20' Contribution: Maciej Ossowski
    • 20' Contribution: Daniel Peñalver Mares
    • 20' Contribution: Francisco Javier Marañón González
    • 20' Contribution: Marco de Cesare
    • Lunch
    • Invited talk: Chiara Toldo (participating online)

      Miguel Zumalacárregui
      Gravitational lensing of waves: a new window into astrophysics, dark matter & gravity

    • Coffee break
    • 20' Contribution: Hryhorii Ovcharenko
    • 20' Contribution: Giacomo Giorgi
    • 20' Contribution: Igor Kanatchikov