![Aldo Ejlli](https://profiles-cardiff.imgix.net/attachments/3739?w=200&h=200&auto=format&crop=faces&fit=crop&q=90")
Dr Aldo Ejlli
Research Associate
Gravity Exploration Institute
School of Physics and Astronomy
- EjlliA@cardiff.ac.uk
- Queen's Buildings - North Building, Room Room N/2.08b, 5 The Parade, Newport Road, Cardiff, CF24 3AA
Overview
I am a research associate at the Gravity Exploration Institute at Cardiff University. I am an experimental physicist who uses laser interferometry experiments to investigate unresolved fundamental physics questions.
I am involved in the gravitational wave detector LIGO (Laser Interferometer Gravitational-Wave Observatory) and a member of LIGO Scientific Collaboration, which made its first detection of gravitational waves on September 14, 2015. I contributed to designing and constructing ultra-low noise-enhanced readout electronics for the Advanced LIGO detectors.
A novel technique for detecting high-frequency gravitational waves based on graviton-photon conversion in a static magnetic field is particularly intriguing to me. Inspired by that, I led the effort to find the first upper limits of a stochastic gravitational-wave background at optical and x-ray frequencies.
Recently, as a member of Quantum-enhanced Interferometry for New Physics, my major focus has been to design and build an experiment to investigate quantum space-time signatures using two co-located power-recycling Michelson interferometers. Also, because of how they are set up, the two co-located power-recycling Michelson interferometers will be sensitive to high-frequency gravitational waves and scalar field dark matter.
My doctoral dissertation focus was on vacuum magnetic birefringence (VMB), which has attained the highest sensitivity towards a first measure of the VMB (PVLAS experiment). I continued to work on this project as part of a new initiative named VMB@CERN. The goal of this project is to measure the vacuum magnetic birefringence by using the intense field from a spare magnet at the Large Hadron Collider (LHC) facilities.
Publication
2023
- Ejlli, A., Vermeulen, S., Schwartz, E., Aiello, L. and Grote, H. 2023. Probing dark matter with polarimetry techniques. Physical Review D 107, article number: 83035. (10.1103/PhysRevD.107.083035)
- Abbott, R. et al. 2023. Population of merging compact binaries inferred using gravitational waves through GWTC-3. Physical Review X 13(1), article number: 11048. (10.1103/PhysRevX.13.011048)
- Abbott, R. et al. 2023. Search for subsolar-mass black hole binaries in the second part of Advanced LIGO's and Advanced Virgo's third observing run. Monthly Notices of the Royal Astronomical Society, article number: stad588. (10.1093/mnras/stad588)
2022
- Abbott, R. et al. 2022. Search for gravitational waves from Scorpius X-1 with a hidden Markov model in O3 LIGO data. Physical Review D 106(6), article number: 62002. (10.1103/PhysRevD.106.062002)
- Abbott, R. et al. 2022. Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data. Physical Review D 106(4), article number: 42003. (10.1103/PhysRevD.106.042003)
- Abbott, R. et al. 2022. Search for subsolar-mass binaries in the first half of advanced LIGO's and advanced Virgo's third observing run. Physical Review Letters 129(6) (10.1103/PhysRevLett.129.061104)
- Abbott, R. et al. 2022. First joint observation by the underground gravitational-wave detector, KAGRA, with GEO 600. Progress of Theoretical and Experimental Physics 2022(6), article number: 063F01. (10.1093/ptep/ptac073)
- Abbott, R. et al. 2022. Narrowband searches for continuous and long-duration transient gravitational waves from known pulsars in the LIGO-Virgo third observing run. Astrophysical Journal 932(2), article number: 133. (10.3847/1538-4357/ac6ad0)
- Abbott, R. et al. 2022. All-sky, all-frequency directional search for persistent gravitational waves from Advanced LIGO's and Advanced Virgo's first three observing runs. Physical Review D 105(12), article number: 122001. (10.1103/PhysRevD.105.122001)
- Abbott, R. et al. 2022. All-sky search for gravitational wave emission from scalar boson clouds around spinning black holes in LIGO O3 data. Physical Review D 105(10), article number: 102001. (10.1103/PhysRevD.105.102001)
- Abbott, R. et al. 2022. Search of the early O3 LIGO data for continuous gravitational waves from the Cassiopeia A and Vela Jr. supernova remnants. Physical Review D 105(8), article number: 82005. (10.1103/PhysRevD.105.082005)
- Abbott, R. et al. 2022. Search for gravitational waves associated with gamma-ray bursts detected by Fermi and Swift during the LIGO-Virgo Run O3b. Astrophysical Journal 928(2), article number: 186. (10.3847/1538-4357/ac532b)
- Abbott, R. et al. 2022. Search for intermediate-mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo. Astronomy & Astrophysics 659, article number: A84. (10.1051/0004-6361/202141452)
- Abbott, R. et al. 2022. Constraints on dark photon dark matter using data from LIGO's and Virgo's third observing run. Physical Review D 105(6), article number: 63030. (10.1103/PhysRevD.105.063030)
- Zavattini, G. et al. 2022. Polarimetry for measuring the vacuum magnetic birefringence with quasi-static fields: a systematics study for the VMB@CERN experiment. The European Physical Journal C 82(2), article number: 159. (10.1140/epjc/s10052-022-10100-x)
2021
- Abbott, R. et al. 2021. Search for lensing signatures in the gravitational-wave observations from the first half of LIGO-Virgo's third observing run. Astrophysical Journal 923(1), article number: 14. (10.3847/1538-4357/ac23db)
- Abbott, R. et al. 2021. All-sky search for short gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run. Physical Review D 104, article number: 122004. (10.1103/PhysRevD.104.122004)
- Abbott, R. et al. 2021. Search for anisotropic gravitational-wave backgrounds using data from Advanced LIGO and Advanced Virgo's first three observing runs. Physical Review D 104(2), article number: 22005. (10.1103/PhysRevD.104.022005)
- Abbott, R. et al. 2021. Upper limits on the isotropic gravitational-wave background from Advanced LIGO and Advanced Virgo's third observing run. Physical Review D 104(2), article number: 22004. (10.1103/PhysRevD.104.022004)
- Abbott, R. et al. 2021. Search for gravitational waves associated with gamma-ray bursts detected by Fermi and Swift during the LIGO-Virgo run O3a. Astrophysical Journal 915(2), article number: 86. (10.3847/1538-4357/abee15)
- Abbott, R. et al. 2021. Observation of gravitational waves from two neutron star-black hole coalescences. Astrophysical Journal Letters 915(1), article number: L5. (10.3847/2041-8213/ac082e)
- Abbott, R. et al. 2021. GWTC-2: compact binary coalescences observed by LIGO and Virgo during the first half of the third observing run. Physical Review X 11(2), article number: 21053. (10.1103/PhysRevX.11.021053)
- Abbott, R. et al. 2021. Constraints on cosmic strings using data from the third advanced LIGO-Virgo observing run. Physical Review Letters 126(24), article number: 241102. (10.1103/PhysRevLett.126.241102)
- Abbott, R. et al. 2021. Tests of general relativity with binary black holes from the second LIGO-Virgo gravitational-wave transient catalog. Physical Review D 103(12), article number: 122002. (10.1103/PhysRevD.103.122002)
- Vermeulen, S. M., Aiello, L., Ejlli, A., Griffiths, W. L., James, A., Dooley, K. L. and Grote, H. 2021. An experiment for observing quantum gravity phenomena using twin table-top 3D interferometers. Classical and Quantum Gravity 38(8), article number: 85008. (10.1088/1361-6382/abe757)
- Abbott, R. et al. 2021. All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems. Physical Review D 103(6), article number: 64017. (10.1103/PhysRevD.103.064017)
- Abbott, R. et al. 2021. Open data from the first and second observing runs of Advanced LIGO and Advanced Virgo. SoftwareX 13, article number: 100658. (10.1016/j.softx.2021.100658)
2020
- Abbott, R. et al. 2020. Gravitational-wave constraints on the equatorial ellipticity of millisecond pulsars. Astrophysical Journal Letters 902(1), article number: L21. (10.3847/2041-8213/abb655)
- Abbott, R. et al. 2020. GW190521: a binary back hole merger with a total mass of 150 M⊙. Physical Review Letters 125(10), article number: 101102. (10.1103/PhysRevLett.125.101102)
- Abbott, R. et al. 2020. Properties and astrophysical implications of the 150 M ⊙ binary black hole merger GW190521. Astrophysical Journal Letters 900(1), article number: L13. (10.3847/2041-8213/aba493)
- Abbott, R. et al. 2020. GW190412: observation of a binary-black-hole coalescence with asymmetric masses. Physical Review D 102(4), article number: 43015. (10.1103/PhysRevD.102.043015)
- Ejlli, A., Della Valle, F., Gastaldi, U., Messineo, G., Pengo, R., Ruoso, G. and Zavattini, G. 2020. The PVLAS experiment: a 25 year effort to measure vacuum magnetic birefringence. Physics Reports 871, pp. 1-74. (10.1016/j.physrep.2020.06.001)
- Abbott, R. et al. 2020. GW190814: gravitational waves from the coalescence of a 23 solar mass black hole with a 2.6 solar mass compact object. Astrophysical Journal Letters 896(2), article number: L44. (10.3847/2041-8213/ab960f)
- Hamburg, R. et al. 2020. A joint Fermi-GBM and LIGO/Virgo analysis of compact binary mergers from the first and second gravitational-wave observing runs. Astrophysical Journal 893(2), article number: 100. (10.3847/1538-4357/ab7d3e)
2019
- Ejlli, A., Ejlli, D., Cruise, A. M., Pisano, G. and Grote, H. 2019. Upper limits on the amplitude of ultra-high-frequency gravitational waves from graviton to photon conversion. European Physical Journal C: Particles and Fields 79(12), article number: 1032. (10.1140/epjc/s10052-019-7542-5)
Articles
- Ejlli, A., Vermeulen, S., Schwartz, E., Aiello, L. and Grote, H. 2023. Probing dark matter with polarimetry techniques. Physical Review D 107, article number: 83035. (10.1103/PhysRevD.107.083035)
- Abbott, R. et al. 2023. Population of merging compact binaries inferred using gravitational waves through GWTC-3. Physical Review X 13(1), article number: 11048. (10.1103/PhysRevX.13.011048)
- Abbott, R. et al. 2023. Search for subsolar-mass black hole binaries in the second part of Advanced LIGO's and Advanced Virgo's third observing run. Monthly Notices of the Royal Astronomical Society, article number: stad588. (10.1093/mnras/stad588)
- Abbott, R. et al. 2022. Search for gravitational waves from Scorpius X-1 with a hidden Markov model in O3 LIGO data. Physical Review D 106(6), article number: 62002. (10.1103/PhysRevD.106.062002)
- Abbott, R. et al. 2022. Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data. Physical Review D 106(4), article number: 42003. (10.1103/PhysRevD.106.042003)
- Abbott, R. et al. 2022. Search for subsolar-mass binaries in the first half of advanced LIGO's and advanced Virgo's third observing run. Physical Review Letters 129(6) (10.1103/PhysRevLett.129.061104)
- Abbott, R. et al. 2022. First joint observation by the underground gravitational-wave detector, KAGRA, with GEO 600. Progress of Theoretical and Experimental Physics 2022(6), article number: 063F01. (10.1093/ptep/ptac073)
- Abbott, R. et al. 2022. Narrowband searches for continuous and long-duration transient gravitational waves from known pulsars in the LIGO-Virgo third observing run. Astrophysical Journal 932(2), article number: 133. (10.3847/1538-4357/ac6ad0)
- Abbott, R. et al. 2022. All-sky, all-frequency directional search for persistent gravitational waves from Advanced LIGO's and Advanced Virgo's first three observing runs. Physical Review D 105(12), article number: 122001. (10.1103/PhysRevD.105.122001)
- Abbott, R. et al. 2022. All-sky search for gravitational wave emission from scalar boson clouds around spinning black holes in LIGO O3 data. Physical Review D 105(10), article number: 102001. (10.1103/PhysRevD.105.102001)
- Abbott, R. et al. 2022. Search of the early O3 LIGO data for continuous gravitational waves from the Cassiopeia A and Vela Jr. supernova remnants. Physical Review D 105(8), article number: 82005. (10.1103/PhysRevD.105.082005)
- Abbott, R. et al. 2022. Search for gravitational waves associated with gamma-ray bursts detected by Fermi and Swift during the LIGO-Virgo Run O3b. Astrophysical Journal 928(2), article number: 186. (10.3847/1538-4357/ac532b)
- Abbott, R. et al. 2022. Search for intermediate-mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo. Astronomy & Astrophysics 659, article number: A84. (10.1051/0004-6361/202141452)
- Abbott, R. et al. 2022. Constraints on dark photon dark matter using data from LIGO's and Virgo's third observing run. Physical Review D 105(6), article number: 63030. (10.1103/PhysRevD.105.063030)
- Zavattini, G. et al. 2022. Polarimetry for measuring the vacuum magnetic birefringence with quasi-static fields: a systematics study for the VMB@CERN experiment. The European Physical Journal C 82(2), article number: 159. (10.1140/epjc/s10052-022-10100-x)
- Abbott, R. et al. 2021. Search for lensing signatures in the gravitational-wave observations from the first half of LIGO-Virgo's third observing run. Astrophysical Journal 923(1), article number: 14. (10.3847/1538-4357/ac23db)
- Abbott, R. et al. 2021. All-sky search for short gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run. Physical Review D 104, article number: 122004. (10.1103/PhysRevD.104.122004)
- Abbott, R. et al. 2021. Search for anisotropic gravitational-wave backgrounds using data from Advanced LIGO and Advanced Virgo's first three observing runs. Physical Review D 104(2), article number: 22005. (10.1103/PhysRevD.104.022005)
- Abbott, R. et al. 2021. Upper limits on the isotropic gravitational-wave background from Advanced LIGO and Advanced Virgo's third observing run. Physical Review D 104(2), article number: 22004. (10.1103/PhysRevD.104.022004)
- Abbott, R. et al. 2021. Search for gravitational waves associated with gamma-ray bursts detected by Fermi and Swift during the LIGO-Virgo run O3a. Astrophysical Journal 915(2), article number: 86. (10.3847/1538-4357/abee15)
- Abbott, R. et al. 2021. Observation of gravitational waves from two neutron star-black hole coalescences. Astrophysical Journal Letters 915(1), article number: L5. (10.3847/2041-8213/ac082e)
- Abbott, R. et al. 2021. GWTC-2: compact binary coalescences observed by LIGO and Virgo during the first half of the third observing run. Physical Review X 11(2), article number: 21053. (10.1103/PhysRevX.11.021053)
- Abbott, R. et al. 2021. Constraints on cosmic strings using data from the third advanced LIGO-Virgo observing run. Physical Review Letters 126(24), article number: 241102. (10.1103/PhysRevLett.126.241102)
- Abbott, R. et al. 2021. Tests of general relativity with binary black holes from the second LIGO-Virgo gravitational-wave transient catalog. Physical Review D 103(12), article number: 122002. (10.1103/PhysRevD.103.122002)
- Vermeulen, S. M., Aiello, L., Ejlli, A., Griffiths, W. L., James, A., Dooley, K. L. and Grote, H. 2021. An experiment for observing quantum gravity phenomena using twin table-top 3D interferometers. Classical and Quantum Gravity 38(8), article number: 85008. (10.1088/1361-6382/abe757)
- Abbott, R. et al. 2021. All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems. Physical Review D 103(6), article number: 64017. (10.1103/PhysRevD.103.064017)
- Abbott, R. et al. 2021. Open data from the first and second observing runs of Advanced LIGO and Advanced Virgo. SoftwareX 13, article number: 100658. (10.1016/j.softx.2021.100658)
- Abbott, R. et al. 2020. Gravitational-wave constraints on the equatorial ellipticity of millisecond pulsars. Astrophysical Journal Letters 902(1), article number: L21. (10.3847/2041-8213/abb655)
- Abbott, R. et al. 2020. GW190521: a binary back hole merger with a total mass of 150 M⊙. Physical Review Letters 125(10), article number: 101102. (10.1103/PhysRevLett.125.101102)
- Abbott, R. et al. 2020. Properties and astrophysical implications of the 150 M ⊙ binary black hole merger GW190521. Astrophysical Journal Letters 900(1), article number: L13. (10.3847/2041-8213/aba493)
- Abbott, R. et al. 2020. GW190412: observation of a binary-black-hole coalescence with asymmetric masses. Physical Review D 102(4), article number: 43015. (10.1103/PhysRevD.102.043015)
- Ejlli, A., Della Valle, F., Gastaldi, U., Messineo, G., Pengo, R., Ruoso, G. and Zavattini, G. 2020. The PVLAS experiment: a 25 year effort to measure vacuum magnetic birefringence. Physics Reports 871, pp. 1-74. (10.1016/j.physrep.2020.06.001)
- Abbott, R. et al. 2020. GW190814: gravitational waves from the coalescence of a 23 solar mass black hole with a 2.6 solar mass compact object. Astrophysical Journal Letters 896(2), article number: L44. (10.3847/2041-8213/ab960f)
- Hamburg, R. et al. 2020. A joint Fermi-GBM and LIGO/Virgo analysis of compact binary mergers from the first and second gravitational-wave observing runs. Astrophysical Journal 893(2), article number: 100. (10.3847/1538-4357/ab7d3e)
- Ejlli, A., Ejlli, D., Cruise, A. M., Pisano, G. and Grote, H. 2019. Upper limits on the amplitude of ultra-high-frequency gravitational waves from graviton to photon conversion. European Physical Journal C: Particles and Fields 79(12), article number: 1032. (10.1140/epjc/s10052-019-7542-5)
Teaching
- Teaching assistant, Statistical Mechanics course 2021-2022, Cardiff University.
- Teaching assistant, Experimental Gravitational I/II course 2019-2020 and 2020-2021, Cardiff University.
- Teaching assistant, Modern Quantum Optics course 2018-2019 and 2019-2020, Cardiff University.
- Tutor, Mechanics and Matter course 2018-2019, Cardiff University.