Programs

Projects & Funding

Three programs support the group's work: GLOW, With Einstein on Crooked Paths and the Ramón y Cajal program. Together they fund the research, the development of public software, and an explicit outreach commitment. A fourth grant, led elsewhere, draws on the same work.

Current projects

GLOW (Gravitational Lensing of Waves)

European Research Council, Consolidator Grant · 2026–2031 · Principal Investigator
Grant agreement 101230608 · 60 months

Gravitational waves and fast radio bursts are coherent: their phase survives the journey, so a lens does not merely magnify them but distorts their wavefront. GLOW builds the theory, methods and software to exploit that. It will search for lensed events in LIGO–Virgo–KAGRA data, probe dark-matter objects and cold-dark-matter halos with LISA, use fast radio bursts to reach planet-scale lenses, and deliver a new class of tests of general relativity and dark energy through lensed propagation. All software and data products will be public.

  • WP1 (Wave-optics phenomena): microlensing and plasma-lensing theory
  • WP2 (Discovering lensed GWs): microlensed waveforms, accelerated inference, populations
  • WP3 (Fundamental physics): dark matter, GW propagation and dark energy

With Einstein on Crooked Paths (Mit Einstein auf krummen Wegen)

Max Planck Society Annual Project (supporting members) · 2024– · Principal Investigator

A philanthropically funded program developing new methods to identify lensed gravitational waves and to use them to probe the small-scale structure of dark matter. It set the methodological foundations that led to the GLoW code and its first applications. The project also carries an explicit outreach commitment: explaining lensed gravitational waves to a non-specialist public.

Ministerio de Ciencia, Innovación y Universidades, Agencia Estatal de Investigación Consejo Superior de Investigaciones Científicas

Ramón y Cajal program

Spanish Research Agency and CSIC · 2026– · Fellow / Principal Investigator

Three linked components of a single faculty recruitment program: the Ramón y Cajal fellowship, the accompanying Atracción de Talento award from the same national agency, and the CSIC RyC-MaX supplement. Together they support work on the gravitational lensing of electromagnetic sources: static ones such as galaxy–galaxy lensing, and variable ones such as quasi-periodic lensed starlight from supermassive black-hole binaries and lensed transients such as type Ia supernovae. Light and gravitational waves are lensed in different regimes, so this line probes black holes, dark matter and cosmic expansion by a route complementary to the wave-optics work.

Contributing to

GWSky (Making Sense of the Gravitational-Wave Sky)

European Research Council, Synergy Grant · ongoing · Senior collaborator

A multi-PI program on the interpretation of the gravitational-wave sky. I contribute the lensing side. A lensed event is not a new kind of source but a distorted one, which puts wave-optics signatures squarely at the interface between waveform modeling and data analysis: the distortion has to enter the templates and the inference machinery before lensing can be searched for at catalog scale. The same work cuts the other way, since unmodeled lensing is a systematic: a diffracted signal can otherwise be read as exotic source physics or as a biased set of parameters.

Past projects and fellowships

Group Leader

Max Planck Institute for Gravitational Physics (Albert Einstein Institute) · 2020–

Research group on Cosmology in the Astrophysical and Cosmological Relativity division. Five-year core funding, which established the group's work on wave-optics lensing.

Marie Skłodowska-Curie Global Fellowship

European Commission · 2015–2020

NLO-CO (Next-to-Leading-Order Cosmology)

Novel tests of dark matter, dark energy and gravity. Outgoing phase at the Berkeley Center for Cosmological Physics, return phase at IPhT Saclay.

CORDIS record

Nordita Fellowship

Nordic Institute for Theoretical Physics, Stockholm · 2015–2017

Two-year independent fellowship on scalar–tensor gravity and dark-energy phenomenology.

FPI doctoral fellowship

Spanish Ministry of Science · 2008–2012

Four-year PhD funding at ICC Barcelona and IFT-UAM/CSIC, with research stays in Heidelberg and Oslo.

European Research Council Max Planck Institute for Gravitational Physics