Search Results - "Pike, Sean N"
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Spectral and Timing Analysis of NuSTAR and Swift/XRT Observations of the X-Ray Transient MAXI J0637–430
Published in The Astrophysical journal (01-11-2021)“…Abstract We present results for the first observed outburst from the transient X-ray binary source MAXI J0637–430. This study is based on eight observations…”
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Return to the Forgotten Ultraluminous X-Ray Source: A Broadband NICER+NuSTAR Study of NGC 4190 ULX-1
Published in The Astrophysical journal (18-06-2024)“…We observed the nearby and relatively understudied ultraluminous X-ray source (ULX) NGC 4190 ULX-1 jointly with Neutron Star Interior Composition Explorer…”
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3
Accretion Spin-up and a Strong Magnetic Field in the Slow-spinning Be X-Ray Binary MAXI J0655-013
Published in The Astrophysical journal (01-09-2023)“…Abstract We present Monitor of All-sky X-ray Image (MAXI) and Nuclear Spectroscopic Telescope Array (NuSTAR) observations of the Be X-ray binary, MAXI…”
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MAXI and NuSTAR Observations of the Faint X-Ray Transient MAXI J1848-015 in the GLIMPSE-C01 Cluster
Published in The Astrophysical journal (01-03-2022)“…Abstract We present the results of Monitor of All-sky X-ray Image (MAXI) monitoring and two Nuclear Spectroscopic Telescope Array (NuSTAR) observations of the…”
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5
Orbital Decay in M82 X-2
Published in The Astrophysical journal (01-10-2022)“…Abstract M82 X-2 is the first pulsating ultraluminous X-ray source discovered. The luminosity of these extreme pulsars, if isotropic, implies an extreme mass…”
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X-Ray and Radio Monitoring of the Neutron Star Low-mass X-Ray Binary 1A 1744-361: Quasiperiodic Oscillations, Transient Ejections, and a Disk Atmosphere
Published in The Astrophysical journal (01-05-2024)“…Abstract We report on X-ray (NICER/NuSTAR/MAXI/Swift) and radio (MeerKAT) timing and spectroscopic analysis from a 3 month monitoring campaign in 2022 of a…”
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A Comprehensive X-Ray Report on AT2019wey
Published in The Astrophysical journal (01-10-2021)“…The Galactic low-mass X-ray binary AT2019wey (ATLAS19bcxp, SRGAJ043520.9+552226, SRGEJ043523.3+552234, ZTF19acwrvzk) was discovered as a new optical transient…”
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Analytical fitting of γ–ray photopeaks in germanium cross strip detectors
Published in Experimental astronomy (2023)“…In an ideal germanium detector, fully-absorbed monoenergetic γ –rays will appear in the measured spectrum as a narrow peak, broadened into a Gaussian of width…”
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Photospheric Radius Expansion and a Double-peaked Type-I X-Ray Burst from GRS 1741.9–2853
Published in The Astrophysical journal (01-09-2021)“…We present an analysis of two type-I X-ray bursts observed by NuSTAR originating from the very faint transient neutron star (NS) low-mass X-ray binary GRS…”
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10
A Broadband Look at the Old and New ULXs of NGC 6946
Published in The Astrophysical journal (10-08-2019)“…Two recent observations of the nearby galaxy NGC 6946 with NuSTAR, one simultaneous with an XMM-Newton observation, provide an opportunity to examine its…”
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Observing the Transient Pulsations of SMC X-1 with NuSTAR
Published in The Astrophysical journal (20-04-2019)“…We report on Nuclear Spectroscopic Telescope Array observations of transient pulsations in the neutron star X-ray binary SMC X-1. The transition from…”
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Discovery of a new supergiant fast X-ray transient MAXI J0709−159 associated with the Be star LY Canis Majoris
Published in Publications of the Astronomical Society of Japan (03-10-2022)“…Abstract We report on the discovery of a new supergiant fast X-ray transient (SFXT), MAXI J0709−159, and its identification with LY CMa (also known as HD…”
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Analytical fitting of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\gamma $$\end{document}γ–ray photopeaks in germanium cross strip detectors
Published in Experimental astronomy (01-01-2023)“…In an ideal germanium detector, fully-absorbed monoenergetic \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts}…”
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Numerical simulations of charge trapping in germanium strip detectors
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-12-2023)“…Charge trapping in germanium detectors will inevitably impact their excellent spectral performance. Disordered regions in the germanium crystal structure,…”
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Characterizing and correcting electron and hole trapping in germanium cross-strip detectors
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-11-2023)“…We present measurements of electron and hole trapping in three COSI germanium cross-strip detectors. By characterizing the relative charge collection…”
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Exploring the Mass Accretion Rates of Neutron Star X-Ray Binaries and the Properties of Cadmium Zinc Telluride for Hard X-Ray Astronomy
Published 01-01-2023“…My thesis work has consisted of investigations of several X-ray binaries using the Nuclear Spectroscopic Telescope Array (NuSTAR), as well as characterization…”
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Dissertation -
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Numerical Simulations of Charge Trapping in Germanium Strip Detectors
Published 02-10-2023“…Charge trapping in germanium detectors will inevitably impact their excellent spectral performance. Disordered regions in the germanium crystal structure,…”
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18
Analytical Fitting of Gamma-ray Photopeaks in Germanium Cross Strip Detectors
Published 02-05-2023“…In an ideal germanium detector, fully-absorbed monoenergetic gamma-rays will appear in the measured spectrum as a narrow peak, broadened into a Gaussian of…”
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Journal Article -
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Characterizing and correcting electron and hole trapping in germanium cross-strip detectors
Published 24-10-2023“…We present measurements of electron and hole trapping in three COSI germanium cross-strip detectors. By characterizing the relative charge collection…”
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Journal Article -
20
Return to the forgotten ULX: a broadband NICER+NuSTAR study of NGC 4190 ULX-1
Published 20-03-2024“…We observed the nearby and relatively understudied ultraluminous X-ray source (ULX) NGC 4190 ULX-1 jointly with NICER and NuSTAR to investigate its broadband…”
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Journal Article