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 10 of 10 for “"X-ray pulsars"”.
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Multifaceted Understanding of Accreting Neutron stars and their Environments
… from these accreting neutron stars peak in the X-rays, owing to gravitational potential energy loss as the accreting material falls under the strong gravitational well of the neutron star. The community has been utilizing X-ray timing and spectroscopy for decades to unravel the mysteries of these …
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Disk-magnetosphere interaction in X-ray binaries
Binary X-ray pulsars are strongly magnetic neutron stars accreting matter from a companion star. The strong magnetic fields of the neutron stars guide the accreting plasma to the magnetic poles, and X-ray pulsations result from the rotation of the beamed emission at the magnetic poles through the …
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Magnetically torqued thin accretion disks
… thin accretion disks around millisecond X-ray pulsars. We start with the Shakura-Sunyaev thin disk model as a basis and modify the disk equations with a magnetic torque from the central neutron star. Disk solutions are computed for a range of neutron star magnetic fields. We also …
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Multi-wavelength study of neutron stars in the Magellanic Clouds
… spectroscopic and timing study of candidate X-ray binaries in the Large Magellanic Cloud (LMC), resulting in a 50% increase in the confirmed population of accreting neutron stars in the LMC. Following this study, I carry out a targeted radio pulsar search in the Small Magellanic Cloud (SMC), …
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X-ray astronomy with CCDs : calibration of the advanced CCD imaging spectrometer and observations of rotation-powered pulsars
… the use of charge coupled devices (CCDs) for X-ray astronomy. Part I of this thesis focuses on the calibration of the Advanced CCD Imaging Spectrometer (ACIS), one of the two primary focal plane instruments on the Chandra X-ray Observatory. I begin by presenting a series of measurements made …
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X-ray spectroscopy of neutron star low-mass X-ray binaries
… of topics relating to neutron star lowmass X-ray binaries (LMXBs) and utilize spectral information from X-ray observations to further our understanding of these sources. First, I give an overview of important X- ray astrophysics relevant to the work I present in subsequent chapters, as well as …
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Disk Accretion to Rotating Magnetized Stars: Magnetohydrodynamic Simulations
… T Tauri stars, dwarf novae and millisecond X-ray pulsars. The magnetic geometry of a rotating star can have a strong influence on the matter in an accretion disk, which is disrupted and channelled by the magnetic field to the star along the field lines. Theoretical and observational approaches …
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The X-ray and gamma-ray sky - Temporal, spectral and triangulation techniques for the characterization and localization of sources in High Energy Astrophysics
The X-ray and gamma-ray sky hides some of the most energetic events we can observe, and with them the struggle to shed some light onto the most extreme conditions of matter and the fabric of space-time. Low-Mass X-ray Binaries (LMXBs) are binary systems in which a compact object accretes matter …