吉他脉冲星的起源
The origin of the Guitar pulsar
摘要:
在140个OB协会和集群的样本中,我们希望确定吉他脉冲星(PSR B2224+65)可能的父协会,这也将限制其年龄。为此,我们使用欧拉-柯西技术处理银河系势的垂直分量,以计算脉冲星的轨迹和每个协会到过去。为了包括误差,我们使用蒙特卡罗模拟在其误差区间内改变初始参数。在模拟过程中考虑了可能的脉冲星径向速度的整个范围。我们发现吉他脉冲星最有可能起源于天鹅座OB 3星协约0.8百万年前,推测其当前的径向速度为v_r~-30 km/s,与其弓形激波的倾角一致。
英文摘要:
Among a sample of 140 OB associations and clusters, we want to identify probable parent associations for the Guitar pulsar (PSR B2224+65) which would then also constrain its age. For this purpose, we are using an Euler-Cauchy technique treating the vertical component of the galactic potential to calculate the trajectories of the pulsar and each association into the past. To include errors we use Monte-Carlo simulations varying the initial parameters within their error intervals. The whole range of possible pulsar radial velocities is taken into account during the simulations. We find that the Guitar pulsar most probably originated from the Cygnus OB3 association ~0.8 Myr ago inferring a current radial velocity of v_r~-30 km/s, consistent with the inclination of its bow shock.
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