作者: M. Daszuta , W. Lewandowski , J. Kijak
关键词: Spectrum analysis 、 Astrophysics 、 Scintillation 、 Radio telescope 、 Structure function 、 Physics 、 Decorrelation 、 Bandwidth (signal processing)
摘要: We present results of the analysis interstellar scintillation in PSR B0823+26. Observations were conducted at a frequency 1.7 GHz using 32-m Torun Centre for Astronomy radio telescope. More than 50 observing sessions, lasting on average 10 h, between 2003 and 2006. found parameters by means dynamic spectrum as well structure function flux density variations. identified two distinctive time-scales, which we believe to be time-scales diffractive refractive scintillation. Our show that given time-scale B0823+26 is $\tau_{diss} = 19.3^{+1.7}_{-1.6}$ min, $\tau_{riss} 144 \pm 23$ min decorrelation bandwidth $B_{iss} 81 3$ MHz.