Stellar interferometry for gravitational waves

I. H. Park, K. Y. Choi, J. Hwang, S. Jung, D. H. Kim, M. H. Kim, C. H. Lee, K. H. Lee, S. H. Oh, M. G. Park, S. C. Park, A. Pozanenko, C. D. Rho, N. Vedenkin, E. Won

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We propose a new method to detect gravitational waves, based on spatial coherence interferometry with stellar light, as opposed to the conventional temporal coherence interferometry with laser sources. The proposed method detects gravitational waves by using two coherent beams of light from a single distant star measured at separate space-based detectors with a long baseline. This method can be applied to either the amplitude or intensity interferometry. This experiment allows for the search of gravitational waves in the lower frequency range of 106 to 104 Hz. In this work, we present the detection sensitivity of the proposed stellar interferometer by taking the detector response and shot and acceleration noises into account. Furthermore, the proposed experimental setup is capable of searching for primordial black holes and studying the size of the target neutron star, which are also discussed in the paper.

Original languageEnglish
Article number008
JournalJournal of Cosmology and Astroparticle Physics
Issue number11
Publication statusPublished - 2021 Nov

Bibliographical note

Funding Information:
We are grateful to Antoine Labeyrie for his suggestion of Crab Pulsar as a light source for stellar interferometery. We would also like to thank Sunkee Kim, Hyungwon Lee, Jongmann Yang, Soomin Jeong, Chanyeol Kim, Chunglee Kim, Jiwoo Nam, Jean Schneider, Denis Mourard, and Rijuparna Chakraborty for fruitful discussions on noises and light sources. We acknowledge the support from the National Research Foundation (NRF) of Korea: I.H.P. NRF-2017K1A4A3015188, NRF-2021R1A2B5B03002645, and NRF-2019H1D3A2A02060090; K.Y.C. NRF-2019R1A2B5B010701 81; J.H. NRF-2021R1A2C101109811; S.J. NRF-2019R1 C1C1010050; D.H.K. NRF-2018R1D1 A1B07051276; C.H.L. NRF-2016R1A5A1013277 and NRF-2018R1D 1A1B07048599; S.H.O. NRF-2019R1A2C2006787; S.C.P. NRF-2021R1A4A20 01897 and NRF-2019R1A2C1089334; C.D.R. NRF-2018R1A6A1A06024977; E.W. NRF-2017 R1A2B3001968. A.P. acknowledges the support from RSCF grant 18-12-00378.

Publisher Copyright:
© 2021 IOP Publishing Ltd and Sissa Medialab

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics


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