Výsledky vyhledávání - "Walker Andrew A"

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2019 UO$_{14}$: A Transient Trojan of Saturn

Autor: Hui, Man-To, Wiegert, Paul A., Weryk, Robert, Micheli, Marco, Tholen, David J., Deen, Sam, Walker, Andrew J., Wainscoat, Richard

Saturn has long been the only giant planet in our solar system without any known Trojan members. In this paper, with serendipitous archival observations and refined orbit determination, we report that 2019 UO$_{14}$ is a Trojan of the gas giant. Howe

Externí odkaz: http://arxiv.org/abs/2409.19725

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Adaptive Domain Generalization for Digital Pathology Images

Autor: Walker, Andrew

In AI-based histopathology, domain shifts are common and well-studied. However, this research focuses on stain and scanner variations, which do not show the full picture -- shifts may be combinations of other shifts, or "invisible" shifts that are no

Externí odkaz: http://arxiv.org/abs/2305.05100

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High Mass Flow Rate in a BAL Outflow of Quasar SDSS J1130+0411

Autor: Walker, Andrew, Arav, Nahum, Byun, Doyee

Publikováno v: MNRAS, 516, 3778 (2022)

We present the analysis of the absorption troughs of six outflows observed in quasar SDSS J1130+0411 ($z \approx 3.98$) with radial velocities ranging from $-2400$ to $-15,400$ km s$^{-1}$. These spectra were taken with the Very Large Telescope/Ultra

Externí odkaz: http://arxiv.org/abs/2208.09990

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VLT/UVES Observation of the Outflow in Quasar SDSS J1439-0106

Autor: Byun, Doyee, Arav, Nahum, Walker, Andrew

We analyze the VLT/UVES spectrum of the quasar SDSS J143907.5-010616.7, retrieved from the UVES Spectral Quasar Absorption Database. We identify two outflow systems in the spectrum: a mini broad absorption line (mini-BAL) system and a narrow absorpti

Externí odkaz: http://arxiv.org/abs/2208.07405

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