![Nikitha Kuntimaddi](https://profiles-cardiff.imgix.net/attachments/5981?w=200&h=200&auto=format&crop=faces&fit=crop&q=90")
Nikitha Kuntimaddi
Teams and roles for Nikitha Kuntimaddi
Research Student
Research student
Publication
2026
- Abac, A. G. et al., 2026. GWTC-4.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation. The Astrophysical Journal Letters 1007 (1) L17. (10.3847/2041-8213/ae69dd)
- Abac, A. G. et al., 2026. Narrowband searches for continuous gravitational waves from known pulsars in the first two parts of the Fourth LIGO–Virgo–KAGRA observing run. The Astrophysical Journal 1005 (2) 221. (10.3847/1538-4357/ae77fc)
- Abac, A. G. et al., 2026. GWTC-4.0: population properties of merging compact binaries. The Astrophysical Journal Letters 1005 (2) L51. (10.3847/2041-8213/ae771e)
- Abac, A. G. et al., 2026. Constraints on gravitational waves from the 2024 Vela pulsar glitch. The Astrophysical Journal 1005 (1) 12. (10.3847/1538-4357/ae63bc)
- Abac, A. G. et al., 2026. GWTC-4.0: Methods for identifying and characterizing gravitational-wave transients. The Astrophysical Journal Letters 1004 (2) L21. (10.3847/2041-8213/ae447b)
- Abac, A. G. et al., 2026. GW230814: Investigation of a loud gravitational-wave signal observed with a single detector. The Astrophysical Journal Letters 1004 (2) L23. (10.3847/2041-8213/ae2ad3)
- Abac, A. G. et al., 2026. Open Data from LIGO, Virgo, and KAGRA through the First Part of the Fourth Observing Run. The Astrophysical Journal 1004 (2) 232. (10.3847/1538-4357/ae211e)
- Al-Shammari, S. et al. 2026. Searches for continuous gravitational waves from supernova remnants in the first part of the LIGO-Virgo-KAGRA fourth observing run. The Astrophysical Journal 1004 (2) 204. (10.3847/1538-4357/ae6263)
- Abbasi, R. et al., 2026. Deep search for joint sources of gravitational waves and high-energy Neutrinos with IceCube during the third observing run of LIGO and Virgo. The Astrophysical Journal 1003 (1) 41. (10.3847/1538-4357/ae4e1b)
- Abac, A. et al., 2026. All-sky search for long-duration gravitational-wave transients in the first part of the fourth LIGO-Virgo-KAGRA observing run. Physical Review D 113 (8) 082004. (10.1103/83j3-pgk1)
- Abac, A. G. et al., 2026. Black hole spectroscopy and tests of general relativity with GW250114. Physical Review Letters 136 (4) 041403. (10.1103/6c61-fm1n)
2025
- Bergamin, F. et al. 2025. A broadband squeezed light source for table-top interferometry. New Journal of Physics 27 (12) 125005. (10.1088/1367-2630/ae2987)
- Al-Shammari, S. et al. 2025. GWTC-4.0: An introduction to version 4.0 of the Gravitational-Wave Transient Catalog. The Astrophysical Journal Letters 995 (1) L18. (10.3847/2041-8213/ae0c06)
- al-Shammari, S. et al. 2025. All-sky search for short gravitational-wave bursts in the first part of the fourth LIGO-Virgo-KAGRA observing run. Physical Review D 112 102005. (10.1103/wjdz-jdby)
- Al-Shammari, S. et al. 2025. GW231123: A binary black hole merger with total mass 190–265 M⊙. The Astrophysical Journal Letters 993 (1) L25. (10.3847/2041-8213/ae0c9c)
- Al-Shammari, S. et al. 2025. GW241011 and GW241110: Exploring binary formation and fundamental physics with asymmetric, high-spin black hole coalescences. The Astrophysical Journal Letters 993 L21. (10.3847/2041-8213/ae0d54)
- Amarasinghege, O. et al. 2025. GW250114: Testing Hawking’s area law and the Kerr nature of black holes. Physical Review Letters 135 111403. (10.1103/kw5g-d732)
- Patra, A. et al. 2025. Broadband limits on stochastic length fluctuations from a pair of table-top interferometers. Physical Review Letters 135 101402. (10.1103/61j9-cjkk)
- Abac, A. G. et al., 2025. Search for gravitational waves emitted from SN 2023ixf. The Astrophysical Journal 985 (2) 183. (10.3847/1538-4357/adc681)
- Abac, A. G. et al., 2025. Search for continuous gravitational waves from known pulsars in the first part of the fourth LIGO-Virgo-KAGRA observing run. The Astrophysical Journal 983 (2) 99. (10.3847/1538-4357/adb3a0)
2024
- Abac, A. G. et al., 2024. Observation of gravitational waves from the coalescence of a 2.5–4.5 M ⊙ compact object and a neutron star. The Astrophysical Journal Letters 970 (2) L34. (10.3847/2041-8213/ad5beb)
Articles
- Abac, A. G. et al., 2026. GWTC-4.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation. The Astrophysical Journal Letters 1007 (1) L17. (10.3847/2041-8213/ae69dd)
- Abac, A. G. et al., 2026. Narrowband searches for continuous gravitational waves from known pulsars in the first two parts of the Fourth LIGO–Virgo–KAGRA observing run. The Astrophysical Journal 1005 (2) 221. (10.3847/1538-4357/ae77fc)
- Abac, A. G. et al., 2026. GWTC-4.0: population properties of merging compact binaries. The Astrophysical Journal Letters 1005 (2) L51. (10.3847/2041-8213/ae771e)
- Abac, A. G. et al., 2026. Constraints on gravitational waves from the 2024 Vela pulsar glitch. The Astrophysical Journal 1005 (1) 12. (10.3847/1538-4357/ae63bc)
- Abac, A. G. et al., 2026. GWTC-4.0: Methods for identifying and characterizing gravitational-wave transients. The Astrophysical Journal Letters 1004 (2) L21. (10.3847/2041-8213/ae447b)
- Abac, A. G. et al., 2026. GW230814: Investigation of a loud gravitational-wave signal observed with a single detector. The Astrophysical Journal Letters 1004 (2) L23. (10.3847/2041-8213/ae2ad3)
- Abac, A. G. et al., 2026. Open Data from LIGO, Virgo, and KAGRA through the First Part of the Fourth Observing Run. The Astrophysical Journal 1004 (2) 232. (10.3847/1538-4357/ae211e)
- Al-Shammari, S. et al. 2026. Searches for continuous gravitational waves from supernova remnants in the first part of the LIGO-Virgo-KAGRA fourth observing run. The Astrophysical Journal 1004 (2) 204. (10.3847/1538-4357/ae6263)
- Abbasi, R. et al., 2026. Deep search for joint sources of gravitational waves and high-energy Neutrinos with IceCube during the third observing run of LIGO and Virgo. The Astrophysical Journal 1003 (1) 41. (10.3847/1538-4357/ae4e1b)
- Abac, A. et al., 2026. All-sky search for long-duration gravitational-wave transients in the first part of the fourth LIGO-Virgo-KAGRA observing run. Physical Review D 113 (8) 082004. (10.1103/83j3-pgk1)
- Abac, A. G. et al., 2026. Black hole spectroscopy and tests of general relativity with GW250114. Physical Review Letters 136 (4) 041403. (10.1103/6c61-fm1n)
- Bergamin, F. et al. 2025. A broadband squeezed light source for table-top interferometry. New Journal of Physics 27 (12) 125005. (10.1088/1367-2630/ae2987)
- Al-Shammari, S. et al. 2025. GWTC-4.0: An introduction to version 4.0 of the Gravitational-Wave Transient Catalog. The Astrophysical Journal Letters 995 (1) L18. (10.3847/2041-8213/ae0c06)
- al-Shammari, S. et al. 2025. All-sky search for short gravitational-wave bursts in the first part of the fourth LIGO-Virgo-KAGRA observing run. Physical Review D 112 102005. (10.1103/wjdz-jdby)
- Al-Shammari, S. et al. 2025. GW231123: A binary black hole merger with total mass 190–265 M⊙. The Astrophysical Journal Letters 993 (1) L25. (10.3847/2041-8213/ae0c9c)
- Al-Shammari, S. et al. 2025. GW241011 and GW241110: Exploring binary formation and fundamental physics with asymmetric, high-spin black hole coalescences. The Astrophysical Journal Letters 993 L21. (10.3847/2041-8213/ae0d54)
- Amarasinghege, O. et al. 2025. GW250114: Testing Hawking’s area law and the Kerr nature of black holes. Physical Review Letters 135 111403. (10.1103/kw5g-d732)
- Patra, A. et al. 2025. Broadband limits on stochastic length fluctuations from a pair of table-top interferometers. Physical Review Letters 135 101402. (10.1103/61j9-cjkk)
- Abac, A. G. et al., 2025. Search for gravitational waves emitted from SN 2023ixf. The Astrophysical Journal 985 (2) 183. (10.3847/1538-4357/adc681)
- Abac, A. G. et al., 2025. Search for continuous gravitational waves from known pulsars in the first part of the fourth LIGO-Virgo-KAGRA observing run. The Astrophysical Journal 983 (2) 99. (10.3847/1538-4357/adb3a0)
- Abac, A. G. et al., 2024. Observation of gravitational waves from the coalescence of a 2.5–4.5 M ⊙ compact object and a neutron star. The Astrophysical Journal Letters 970 (2) L34. (10.3847/2041-8213/ad5beb)
Research
I am a first year PhD student with the Gravity Exploration Institute at Cardiff School of Physics and Astronomy. My thesis is focused on designing optical filter cavities for single-photon readout for table-top interferometers. My supervisors are Prof Hartmut Grote, Prof Kate Dooley and Dr Keiko Kokeyama.
In this larger scale version of the QUEST experiment, two co-located interferometers have arm lengths of 5 m each. To bypass photon shot noise, which is the limiting noise source at high frequencies, this experiment plans to use the single photon readout technique. In this technique, the light exiting the interferometer's output port is reduced to a point where the detector can see a single photon per second. This reduction can be done using a series of optical filter cavities. These cavities can be designed and tuned to only transmit the signal-carrying photons, which are so small in number that they can be detected by a single-photon detector.
Contact Details
[email protected]
Queen's Buildings - North Building, Floor 2, Room N/2.07, 5 The Parade, Newport Road, Cardiff, CF24 3AA
Queen's Buildings - North Building, Floor 2, Room N/2.07, 5 The Parade, Newport Road, Cardiff, CF24 3AA
Research themes
Specialisms
- Lasers and quantum electronics
- General relativity and gravitational waves