6 hasil untuk "Webbe Robbie"
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Artikel Jurnal
A systematic assessment of the short-term X-ray behaviour of the γ Cas analogues
Context. Overall, γ Cas analogues represent a class of OBe stars displaying bright and hard X-ray emission. This emission was recently determined to be the result of accretion onto a companion white dwarf (WD), which might possibly be a magnetic WD. Aims. We present a systematic review of the…
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Preprint Teks lengkap
Searching for Quasi-Periodic Eruptions using Machine Learning
Quasi-Periodic Eruptions (QPEs) are a rare phenomenon in which the X-ray emission from the nuclei of galaxies shows a series of large amplitude flares. Only a handful of QPEs have been observed but the possibility remains that there are as yet undetected sources in archival data. Given the volume…
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Preprint Teks lengkap
The Effects of Instrumental Deadtime on NICER Timing Products
The X-ray Timing Instrument as part of the Neutron Star Interior Composition Explorer has the potential to examine the time-domain properties of compact objects in regimes not explored by previous timing instruments, due to its combination of high effective area and timing resolution. We consider…
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Artikel Jurnal
Long-term investigation of γ Cas analogs
Context. The subcategory of γ Cas analogs gathers Be stars with bright and hard X-ray emission. Aims. This paper aims to enlarge the sample of γ Cas analogs studied on long timescales. Long-term variations are expected in such objects for two reasons. First, their Be disk builds and dissipates…
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Artikel Jurnal
STONKS first results: Long-term transients in the XMM-Newton Galactic plane survey
Context. The study of astronomical transients at high energies provides insights into some of the most extreme physical events in the universe; however, carrying out their detection and fast follow-up studies are limited by instrumental constraints. Search for Transient Object in New observations…
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Preprint Teks lengkap
STONKS first results: Long-term transients in the XMM-Newton Galactic plane survey
The study of astronomical transients at high energies provides insights into some of the most extreme physical events in the universe; however, carrying out their detection and fast follow-up studies are limited by instrumental constraints. Search for Transient Object in New observations using…