Search Results for author: T. J. W. Lazio

Found 6 papers, 1 papers with code

Estimates of Fast Radio Burst Dispersion Measures from Cosmological Simulations

no code implementations18 Mar 2019 N. Pol, M. T. Lam, M. A. McLaughlin, T. J. W. Lazio, J. M. Cordes

This approach yields an integrated intergalactic DM of $\rm DM_{\rm IGM}(z = 1) = 940^{+8200}_{-200}$ pc cm$^{-3}$, with the large errors representative of the structure in the IGM.

High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics

Optimal Frequency Ranges for Sub-Microsecond Precision Pulsar Timing

no code implementations6 Oct 2017 M. T. Lam, M. A. McLaughlin, J. M. Cordes, S. Chatterjee, T. J. W. Lazio

We also find that arrival-time precision can be improved by increases in total bandwidth.

High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics

NE2001.I. A New Model for the Galactic Distribution of Free Electrons and its Fluctuations

2 code implementations8 Jul 2002 J. M. Cordes, T. J. W. Lazio

It (a) describes the distribution of the free electrons responsible for pulsar dispersion measures and thus can be used for estimating the distances to pulsars; (b) describes large-scale variations in the strength of fluctuations in electron density that underly interstellar scattering; (c) can be used to interpret interstellar scattering and scintillation observations of Galactic objects and of extragalactic objects, such as intrinsically compact AGNs and Gamma-ray burst afterglows; and (d) serves as a preliminary, smooth spatial model of the warm ionized component of the interstellar gas.

astro-ph

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