Andrew Miller



Centre for Cosmology, Particle Physics and Phenomenology - CP3
Université catholique de Louvain
2, Chemin du Cyclotron - Box L7.01.05
B-1348 Louvain-la-Neuve


UCL member card
Research directions:
Cosmology and General Relativity
Data analysis in HEP, astroparticle and GW experiments

Experiments and collaborations:

Active projects
Multi-messenger studies of transient sources
Giacomo Bruno, Gwenhaël De Wasseige, Karlijn kruiswijk, Andrew Miller, Magdalena Sieniawska, Jishnu Suresh

This project aims at studying astrophysical phenomena combining different messengers, mainly neutrinos and gravitational waves.
Virgo - data analysis - direct search for ultra-light dark matter with gw detectors
Giacomo Bruno, Andrew Miller

We know that a lot of matter we cannot see affects the motion of the stars around the center of the galaxy. This matter is present on earth, and in theory can interact directly with the mirrors in LIGO-Virgo in a specific way depending on the mass of the constituent particles. Since the dark matter is always present, the signal is at a fixed frequency that impinges on the detector. We are developing methods that search for this unique signature of dark matter.
Virgo - data analysis - searches for inspiralling primordial black holes
Giacomo Bruno, Federico De Lillo, Andrew Miller

The detection of gravitational waves from the merger of heavy binary black hole and neutron star systems has driven the worldwide interest in gravitational wave physics. However, we have only seen the last second or less of these systems’ lives. If the black holes were less massive, we could actually have seen them as they were slowly moving towards each other. Lighter black holes imply different physics and formation mechanisms for them in the universe, hence a detection of these so-called primordial black holes would be a major breakthrough in physics.

External collaborators: Sebastien Clesse (ULB).
Virgo - data analysis - ultra-light dark matter around black holes
Giacomo Bruno, Antoine Depasse, Andrew Miller

If ultralight dark matter exists and is composed of bosons, dark matter clouds can form around black holes after their birth and grow exponentially in size by extracting energy and spin from the black holes. Once the cloud has fully formed, the bosons will couple to each other and annihilate, emitting almost monochromatic (fixed energy) gravitational waves for extremely long periods of time. The boson can be treated as a scalar, vector or tensor field, which all imply different timescales for growth and deletion, and gravitational wave signal strength. Additionally, the implications of a detection of differ for each of these fields.

Non-active projects
Publications in CP3
All my publications on Inspire

Number of publications as CP3 member: 22 Download BibTeX

Last 5 publications


CP3-22-13: Stochastic gravitational-wave background searches and constraints on neutron-star ellipticity
Federico De Lillo, Jishnu Suresh, Andrew L. Miller

[Abstract] [PDF] [Local file] [Journal]
Available in arxiv, published in MNRAS.
Refereed paper. March 8.


CP3-21-37: Constraints on cosmic strings using data from the third Advanced LIGO-Virgo observing run
Abbott, R. and others

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. June 18.
CP3-21-36: Upper Limits on the Isotropic Gravitational-Wave Background from Advanced LIGO's and Advanced Virgo's Third Observing Run
Abbott, R. and others

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. June 18.
CP3-21-35: Diving below the spin-down limit: Constraints on gravitational waves from the energetic young pulsar PSR J0537-6910
Abbott, R. and others

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. June 18.
CP3-21-34: All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems
Abbott, R. and others

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. June 18.

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