Zobrazeno 1 - 10 of 81 pro vyhledávání: '"D R, Scott"'
1
A measurement of Hubble's Constant using Fast Radio Bursts
Autor: C W James, E M Ghosh, J X Prochaska, K W Bannister, S Bhandari, C K Day, A T Deller, M Glowacki, A C Gordon, K E Heintz, L Marnoch, S D Ryder, D R Scott, R M Shannon, N Tejos
Publikováno v: James, C W, Ghosh, E M, Prochaska, J X, Bannister, K W, Bhandari, S, Day, C K, Deller, A T, Glowacki, M, Gordon, A C, Heintz, K E, Marnoch, L, Ryder, S D, Scott, D R, Shannon, R M & Tejos, N 2022, ' A measurement of Hubble's Constant using Fast Radio Bursts ', Monthly Notices of the Royal Astronomical Society, vol. 516, no. 4, pp. 4862-4881 . https://doi.org/10.1093/mnras/stac2524
We constrain the Hubble constant H$_0$ using Fast Radio Burst (FRB) observations from the Australian Square Kilometre Array Pathfinder (ASKAP) and Murriyang (Parkes) radio telescopes. We use the redshift-dispersion measure (`Macquart') relationship,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac3c675be29c2d16523a7bb0c7b2aa3f
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2
Future instruments and sustainable outposts for deep space, Moon and Mars: Highlights and lessons from geologists supporting Apollo astronauts
Autor: James W. Head, D. R. Scott
A fundamental goal of international human and robotic space exploration is to establish human outposts and bases on the Moon and Mars. We seek to provide a planetary science perspective on lessons learned from the Apollo Lunar Exploration Program. 1)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c833b90aba674248cdd75e5a324dd090
https://doi.org/10.5194/epsc2021-849
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4
Potential Lunar Base on Mons Malapert: Topographic, Geologic and Trafficability Considerations
Autor: S. S. Krasilnikov, Mikhail A. Ivanov, M. I. Malenkov, D. R. Scott, James W. Head, Tiantian Liu, Alexander T. Basilevsky, L. Lark, Gregory Michael
Publikováno v: Solar System Research. 53:383-398
Polar areas of the Moon are prospective sites for construction of a lunar base due to the near constant illumination conditions and the potential presence of water ice in the regolith of cold traps. The mountain Mons Malapert (MM) near the South pole
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f8f1de00f868248a939c46bbcf0c6cde
https://doi.org/10.1134/s0038094619050022
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5
A census of baryons in the Universe from localized fast radio bursts
Autor: Keith W. Bannister, Ryan Shannon, Matthew McQuinn, Nicolas Tejos, Jason X. Prochaska, C. W. James, D. R. Scott, Ron Ekers, Lachlan Marnoch, Chris Phillips, Stuart D. Ryder, Jean-Pierre Macquart, Stefan Oslowski, Adam Deller, Shivani Bhandari, Cherie K. Day
More than three quarters of the baryonic content of the Universe resides in a highly diffuse state that is difficult to observe, with only a small fraction directly observed in galaxies and galaxy clusters. Censuses of the nearby Universe have used a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c3b1e2b29c6c98c45b204a14420af5e
http://arxiv.org/abs/2005.13161
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6
A census of baryons in the Universe from localized fast radio bursts
Autor: J-P, Macquart, J X, Prochaska, M, McQuinn, K W, Bannister, S, Bhandari, C K, Day, A T, Deller, R D, Ekers, C W, James, L, Marnoch, S, Osłowski, C, Phillips, S D, Ryder, D R, Scott, R M, Shannon, N, Tejos
Publikováno v: Nature. 581(7809)
More than three-quarters of the baryonic content of the Universe resides in a highly diffuse state that is difficult to detect, with only a small fraction directly observed in galaxies and galaxy clusters
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::93fb717f8b0ced6387e3270ef4d2f40d
https://pubmed.ncbi.nlm.nih.gov/32461651
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7
No Low-frequency Emission from Extremely Bright Fast Radio Bursts
Autor: Mark Walker, Ryan Shannon, David L. Kaplan, Brian Crosse, D. R. Scott, K. Steele, Bryan Gaensler, Cathryn M. Trott, Miguel F. Morales, Melanie Johnston-Hollitt, Marcin Sokolowski, Steven Tingay, G. Sleap, D. Kenney, Ron Ekers, L. Horsley, Andrew Williams, Thomas M. O. Franzen, Chen Wu, Adam P. Beardsley, N. D. R. Bhat, Jean-Pierre Macquart, D. Pallot, Keith W. Bannister, David Emrich, Randall B. Wayth
Publikováno v: The Astrophysical Journal. 867:L12
We present the results of a coordinated campaign conducted with the Murchison Widefield Array (MWA) to shadow Fast Radio Bursts (FRBs) detected by the Australian Square Kilometre Array Pathfinder (ASKAP) at 1.4 GHz, which resulted in simultaneous MWA
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88bae087c340f518d34ac29246395482
https://doi.org/10.3847/2041-8213/aae58d
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8
New Ozone Measurement Systems for Autonomous Operation on Ocean Buoys and Towers*
Autor: Eric J. Hintsa, W. W. McMillan, M. Purcell, W. T. Rawlins, K. J. Lightner, A. A. Roberts, P. A. Mulhall, G. P. Allsup, J. Song, David S. Hosom, Michael J. Newchurch, E. R. Sholkovitz, D. R. Scott, C. F. Eck
Publikováno v: Journal of Atmospheric and Oceanic Technology. 21:1007-1016
Two autonomous ozone measurement systems for use on ocean buoys and towers have been built and are discussed herein. They are based on low-power atmospheric ozone sensors from Physical Sciences Inc. (PSI) and 2B Technologies. The PSI sensor operates
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a27f92ee0e79b2b2d38ca95bbf9dd986
https://doi.org/10.1175/1520-0426(2004)021<1007:nomsfa>2.0.co
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9
13C urea breath test (UBT) in the diagnosis of Helicobacter pylori: why does it work better with acid test meals?
Autor: Drahoslava Pantoflickova, George Sachs, Gian Dorta, D R Scott, A. L. Blum
Publikováno v: Gut. 52:933-937
Background: Acid test meals may improve the accuracy of the 13 C urea breath test (UBT). This has been attributed to changes in gastric emptying rather than to the effects of gastric pH on Helicobacter pylori urease. Aims: To determine whether enhanc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a41671f4b64a5955c0672dfd3ad28ea
https://doi.org/10.1136/gut.52.7.933
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10
Basis of Gastric Infection by Helicobacter pylori
Autor: D. R. Scott, G. Sachs, Y. Wen, Elizabeth A. Marcus
This article focuses on the acidity-related factors allowing gastric colonization by Helicobacter pylori . Emphasis is placed on regulation of urea access to cytoplasmic urease by the proton-gated urea channel, UreI. This system enables periplasmic b
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b53839641f82bf903ae621a04c15644c
https://doi.org/10.1016/b978-0-12-801238-3.00138-0
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