Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Green Bank Telescope"”.
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Analysis and Application of Automated Methods for Detecting Pulsars in the Green Bank Telescope 350MHz Drift-Scan Survey
… National Radio Astronomy Observatory's (NRAO's) Green Bank Telescope (GBT) in 2007, this thesis explores the application of machine learning techniques to mitigate the manual efforts involved in pulsar candidate detection. The performance of three different classifiers is explored - Naive Bayes, …
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Real-time Adaptive Cancellation of Satellite Interference in Radio Astronomy
… both an experimental platform at BYU, and the Green Bank Telescope at the National Radio Astronomy Observatory in West Virginia. A performance analysis of this cancellation system in the radio astronomy radio frequency interference (RFI) mitigation regime constitutes the main contribution of …
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Sampling the Radio Transient Universe: Studies of Pulsars and the Search for Extraterrestrial Intelligence
… used mainly for pulsar studies with the Green Bank Telescope. I describe our work on the GPU spectrometer that we developed as part of VEGAS. The GPU code supports a dual-polarization bandwidth of up to 600 MHz.;In the field of SETI, I discuss two works. SERENDIP VI is a heterogeneous …
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Multiple Velocity Component Analysis of Ammonia Spectral Lines in High-Mass Star-Forming Regions
… of ammonia (NH3) gas observations from a Green Bank Telescope large program covering 11 giant molecular clouds (GMCs). To this end we extended existing codes to enable simultaneous fitting of up to three velocity components with radiative transfer. Using our multiple component fitting …
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A search for fast pulsars in globular clusters
… of the recently begun S-band survey using the Green Bank telescope. I have analyzed and conducted acceleration searches on 70% of the data and discovered 7 of the 23 new millisecond pulsars reported in this work. One year of timing observations of the pulsars in M28 and NGC6440 has led to the …
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Observational study of the role of magnetic fields in star formation
… to trace higher density regions. Using the Green Bank Telescope (GBT) we mapped the magnetic fields of cores and envelopes of dark cloud cores using OH as a tracer molecule. From this, the ratio of M/$\Phi$ between the cores and envelopes were computed, and were consistently determined to be …
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Probes of pulsar emission physics: The double pulsar and the gamma-ray pulsar population
… 2.8 s pulsar (pulsar B) based on five years of Green Bank Telescope data since 2003 December. We find that the pulse profile and the flux density of pulsar B change significantly over time, culminating in its radio emission disappearance towards our line of sight since 2008 March. Over this …