Constraint on reconstructed f(R) gravity models from gravitational waves

Understand

The gravitational wave (GW) detection of a binary neutron star inspiral made by the Advanced LIGO and Advanced Virgo paves the unprecedented way for multi-messenger observations.

• The propagation speed of this GW can be scrutinized by comparing the arrival times between GW and neutrinos or photons.
• It provides the constraint on the mass of the graviton.
• f(R) gravity theories have the habitual non-zero mass gravitons in addition to usual massless ones.