PULSAR TIMING ERRORS FROM ASYNCHRONOUS MULTI-FREQUENCY SAMPLING OF DISPERSION MEASURE VARIATIONS
نویسندگان
چکیده
منابع مشابه
Dispersion Measure Variations and their Effect on Precision Pulsar Timing
We present an analysis of the variations seen in the dispersion measures (DMs) of 20 millisecond pulsars observed as part of the Parkes Pulsar Timing Array project. We carry out a statistically rigorous structure function analysis for each pulsar and show that the variations seen for most pulsars are consistent with those expected for an interstellar medium characterised by a Kolmogorov turbule...
متن کاملDispersion measure variations observed in the direction of the millisecond pulsar PSRB1821-24
High-precision timing observations of the millisecond pulsar PSR B1821-24 have been conducted at the Nançay radiotelescope between 1.37 GHz and 1.7 GHz since January 22, 1992 until January 10, 1996. This dense and precise multifrequency timing series has allowed secular variations of the dispersion measure as high as 0.005 pc.cm−3/year in the direction of this pulsar to be determined. The index...
متن کاملPulsar Timing
The motivation for radio pulsar timing and its basic principles are reviewed. Present and future radio timing techniques and hardware are summarised and compared. The array of present timing programmes and their scientific goals are collated and described. Recent results and future prospects are discussed, with emphasis on multi-wavelength techniques where appropriate. Timing of radio pulsars a...
متن کاملNonlocal cancellation of multi-frequency-channel dispersion
Xiaolong Hu,1,2,3,4,* Tian Zhong,2 Franco N. C. Wong,2 Xiang Mao,1 Prashanta Kharel,1 Zhenda Xie,5 Xinan Xu,5 Chee Wei Wong,5 and Dirk R. Englund2 1Department of Electrical Engineering, Columbia University, New York, New York 10027, USA 2Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA 3School of Precision Instrument and Opto-electro...
متن کاملLow-Frequency Gravitational Waves from Massive Black Hole Binaries: Predictions for LISA and Pulsar Timing Arrays
The coalescence of massive black hole (BH) binaries due to galaxy mergers provides a primary source of low-frequency gravitational radiation detectable by pulsar timing measurements and by the proposed LISA (Laser Interferometry Space Antenna) observatory. We compute the expected gravitational radiation signal from sources at all redshifts by combining the predicted merger rate of galactic halo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2015
ISSN: 1538-4357
DOI: 10.1088/0004-637x/801/2/130