Gravitational wave search no humdrum hunt

Continuous gravitational waves animation - credit: OzGrav An image of continuous gravitational waves. Credit: Mike Myers / Swinburne University of Technology From left to right: Dr Lilli Sun, Dr Karl Wette and Distinguished Prof. Susan Scott from CGA - photo credit: Canberra Times
28 May 2021

The International community of Gravitational Wave scientists are a few steps closer to detect a new source of gravitational waves that has never been detected.

Distinguished Prof. Susan Scott, Dr Karl Wette and Dr Lilli Sun from CGA along with the LIGO Scientific Collaboration (LSC) and Virgo Collaboration are focusing their research on 'continuous gravitational waves' that are a steady constant stream or "hum" of gravitational waves that are caused by spinning of neutron stars. The researchers say continuous gravitational waves can be the result of single spinning neutron stars with a bulge or "mountain" only a few millimetres high. 

If successful, it would be the first detection of a gravitational wave event that didn't involve the collision of massive objects like black holes or neutron stars.

Further information: 

https://www.anu.edu.au/news/all-news/gravitational-wave-search-no-humdru...

https://spaceaustralia.com/index.php/feature/search-continuous-gravitati...

https://www.canberratimes.com.au/story/7271035/anu-scientists-probe-univ...

 

Read the technical papers: 

Searches for continuous gravitational waves from young supernova remnants in the early third observing run of Advanced LIGO and Virgo – read the paper on arXiv.org

Gravitational-wave constraints on the equatorial ellipticity of millisecond pulsars – read the paper in the journal, The Astrophysical Journal Letters

Diving below the spin-down limit: Constraints on gravitational waves from the energetic young pulsar PSR J0537-6910 – read the paper on arXiv.org

Constraints from LIGO O3 data on gravitational wave emission due to r-modes in the glitching pulsar PSR J0537-6910 – read the paper on arXiv.org

All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems – read the paper on arXiv.org