| Title | On the measurement of the speed of gravitational waves |
| Authors | Du, Shuang |
| Affiliation | Sun Yat Sen Univ, Dept Phys & Astron, Zhuhai 519082, Peoples R China Peking Univ, Sch Phys, Beijing 100871, Peoples R China |
| Issue Date | 1-Apr-2021 |
| Publisher | EUROPEAN PHYSICAL JOURNAL PLUS |
| Abstract | The accurate measurement of the speed of gravitational waves (GWs) is very important for fundamental physics. In this paper, by taking cosmological effect into consideration, we derive a new formula to calculate the speed of GWs on the basis of GW 170817-like events. We find that in the case of high redshift, the luminosity distance used in the previous calculation of the speed of GWs needs to be replaced by co-moving distance. We consider some possible electromagnetic counterparts of gravitational-wave events which can significantly reduce the intrinsic uncertainty between the emission times of the gravitational and electromagnetic signals. Optimistically, the measurement accuracy will be improved to similar to 10(-18) m s(-1). |
| URI | http://hdl.handle.net/20.500.11897/611455 |
| ISSN | 2190-5444 |
| DOI | 10.1140/epjp/s13360-021-01362-7 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 |
