MG13 - Talk detail |
|
Participant |
Deng, Xuemei | |||||||
|
Institution |
Purple Mountain Observatory,CAS - 2 West Beijing Road - Nanjing - Jiangsu - China | |||||||
|
Session |
EG3 |
Accepted |
Yes |
Order |
2 |
Time |
14:40 - 15:10 | |
|
Talk |
Oral abstract |
Title |
Probing modified gravity with double pulsars | |||||
| Co-authors | Yi Xie, Tian-Yi Huang | |||||||
|
Abstract |
Although Einstein's general relativity has passed all the tests so far, alternative theories are still required for deeper understanding of the nature of gravity. Double pulsars provide us a significant opportunity to test them. In order to probe some modified gravities which try to explain some astrophysical phenomena without dark matter, we use periastron advance $\dot{\omega}$ of four binary pulsars (PSR B1913+16, PSR B1534+12, PSR J0737-3039 and PSR B2127+11C) to constrain their Yukawa parameters: $\lambda=(3.97\pm0.01)\times10^{8}$m and $\alpha=(2.40\pm0.02)\times10^{-8}$. It might help us to distinguish different gravity theories and get closer to the new physics. |
|||||||