论文标题
用射手座A周围的脉冲星限制Yukawa重力的前景*
Prospects for Constraining the Yukawa Gravity with Pulsars around Sagittarius A*
论文作者
论文摘要
在我们的银河中心（GC），射手座A*（SGR a*）的超级质量黑洞（SMBH）周围发现无线电脉冲星（PSR）将对重力测试产生重大影响。在本文中，我们通过在SGR A*围绕SGR a*的脉冲星进行定时，预测对Yukawa重力的参数的限制。基于到达时间（TOA）的现实时机准确性，$σ_ {\ rm toa} = 100 \，μ{\ rm s} $，并且在20年观察中使用多个960 toas，我们的数值模拟表明，PSR-SMBH系统将改善当前的测试。 $ 10^{1} $ - $ 10^{4} \，{\ rm au} $，它可以将重力质量限制为$ m_g \ sillssim 10^{ - 24} \，{\ rm ev}/c ev}/c^2 $。
The discovery of radio pulsars (PSRs) around the supermassive black hole (SMBH) in our Galactic Center (GC), Sagittarius A* (Sgr A*), will have significant implications for tests of gravity. In this paper, we predict restrictions on the parameters of the Yukawa gravity by timing a pulsar around Sgr A* with a variety of orbital parameters. Based on a realistic timing accuracy of the times of arrival (TOAs), $σ_{\rm TOA}=100\,μ{\rm s}$, and using a number of 960 TOAs in a 20-yr observation, our numerical simulations show that the PSR-SMBH system will improve current tests of the Yukawa gravity when the range of the Yukawa interaction varies between $10^{1}$-$10^{4}\,{\rm AU}$, and it can limit the graviton mass to be $m_g \lesssim 10^{-24}\,{\rm eV}/c^2$.
