Astrophysics (Index)About

nanohertz gravitational waves

(nanohertz GWs)
(size of GWs that pulsar-timing observations might catch)

Nanohertz gravitational waves (nanohertz GWs) are gravitational waves with a frequency on the order of 10-9 hertz, which corresponds to a period of about 30 years, so the term suggests waves with periods in the general range of 1 to 100 years. Speculated sources for this range include:

Pulsar timing arrays (e.g., NANOGrav) are sensitive to GWs in the range of 10-5 Hz to 10-10 Hz, i.e., periods from on the order of a day to on the order of 300 years. Probably the nanohertz range is being investigated because the means of detection exists and is freely available.


(physics,relativity,gravitational waves)
Further reading:
http://en.wikipedia.org/wiki/Gravitational_wave
http://nanograv.org/
https://ui.adsabs.harvard.edu/abs/2019A%26ARv..27....5B/abstract

Referenced by pages:
Sombrero Galaxy (M104)

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