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:

Referenced by page:
Sombrero Galaxy (M104)