Interstellar fringes from pulsar B0834+06

Improving Pulsar Distances by Modelling Interstellar Scattering

We present here a method to study the distribution of electron density fluctuations in pulsar directions as well as to estimate pulsar distances. The method, based on a simple two-component model of the scattering medium discussed by Gwinn et al. (1993), uses scintillation & proper motion data in addition to the measurements of angular broadening & temporal broadening to solve for the model par...

Lattice Spacings from Lattice Fringes

The different techniques available for the accurate measurement of lattice fringe spacings are discussed and their relative merit under different circumstances assessed. The relationship between the lattice fringe spacing and the lattice parameter is further examined for both uniform and chemically inhomogeneous material. The techniques described were also applied to an investigation of carbon ...

Pulsar Scintillation Studies and Structure of the Local Interstellar Medium

Results from new observations of pulsars using the Ooty Radio Telescope (ORT) are used for investigating the structure of the Local Interstellar Medium (LISM). The observations show anomalous scintillation effects towards several nearby pulsars, and these are modeled in terms of large-scale spatial inhomogeneities in the distribution of plasma density fluctuations in the LISM. A 3-component mod...

Through a Glass Darkly: Pulsar Imaging by the Interstellar Medium

Photobiomodulation: poised from the fringes.

The most fascinating aspect of science is that there is no permanence; today’s facts are tomorrow’s fallacies. A passage through the annals of the history of medicine showcases fascinating, often gruesome, images of crude surgical procedures and over-simplistic pharmacological ‘‘alchemy’’ that were all held to the epitome of scientific evidence for its time: clinical efficacy, that is, it works...