Zobrazeno 1 - 10
of 333
pro vyhledávání: '"Paul A. Mason"'
Autor:
McKenna Leichty, Peter Garnavich, Colin Littlefield, Axel Schwope, Jan Kurpas, Paul A. Mason, Klaus Beuermann
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 2, p 81 (2024)
We analyze 15 yr of eclipse timings of the polar V808 Aur. The rapid ingress/egress of the white dwarf and bright accretion region provide timings as precise as a few tenths of a second for rapid cadence photometric data. We find that between 2015 an
Externí odkaz:
https://doaj.org/article/572acd89cee4415e9eee61d426fb8a88
Autor:
Paul A. Mason, Pasi Hakala, Kinwah Wu, Paul E. Barrett, Krystian Iłkiewicz, Colin Littlefield, Lorena C. Monroy, Hasan C. Sezer, Francisco Jablonski, Peter Garnavich, Paula Szkody, Gavin Ramsay, Christopher Duffy, Simone Scaringi
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 1, p 96 (2024)
Transiting Exoplanet Survey Satellite (TESS) photometry of the polars AM Herculis (AM Her) and AR Ursae Majoris (AR UMa) is presented, along with high-speed photometry. AM Her shows a variety of high states with frequent transitions between them. TES
Externí odkaz:
https://doaj.org/article/0977d91430e944688595f44e8333e07b
Autor:
Paula Szkody, Jan van Roestel, Paul A. Mason, Colin Littlefield, R. Michael Rich, Eric C. Bellm, Filipp D. Romanov, Brian F. Healy, Theophile Jegou du Laz, Russ R. Laher, Ben Rusholme
Publikováno v:
The Astronomical Journal, Vol 167, Iss 5, p 186 (2024)
Spectroscopic observations of nine cataclysmic variables that have been postulated to contain magnetic white dwarfs were obtained to further characterize their classifications, orbital parameters, inclinations, and/or accretion properties. Zwicky Tra
Externí odkaz:
https://doaj.org/article/805742d829bf48d8bbe175d878715086
Autor:
Colin Littlefield, Paul A. Mason, Peter Garnavich, Paula Szkody, John Thorstensen, Simone Scaringi, Krystian Iłkiewicz, Mark R. Kennedy, Natalie Wells
Publikováno v:
The Astrophysical Journal Letters, Vol 943, Iss 2, p L24 (2023)
When the accreting white dwarf in a magnetic cataclysmic variable star (mCV) has a field strength in excess of 10 MG, it is expected to synchronize its rotational frequency to the binary orbit frequency, particularly at small binary separations, due
Externí odkaz:
https://doaj.org/article/c2bfcfc8986a41d7add4bdf136d1eb33
Autor:
Colin Littlefield, D. W. Hoard, Peter Garnavich, Paula Szkody, Paul A. Mason, Simone Scaringi, Krystian Ilkiewicz, Mark R. Kennedy, Saul A. Rappaport, Rahul Jayaraman
Publikováno v:
The Astronomical Journal, Vol 165, Iss 2, p 43 (2023)
There have been relatively few published long-duration, uninterrupted light curves of magnetic cataclysmic variable stars in which the accreting white dwarf’s rotational frequency is slightly desynchronized from the binary orbital frequency. We rep
Externí odkaz:
https://doaj.org/article/bed4791703564eb99ea300e010bca2c0
Autor:
Igor K. Nikogosian, Antoine J.J. Bracco Gartner, Paul R.D. Mason, Douwe J.J. van Hinsbergen, Klaudia F. Kuiper, Uwe Kirscher, Sergei Matveev, Araik Grigoryan, Edmond Grigoryan, Arsen Israyelyan, Manfred J. van Bergen, Janne M. Koornneef, Jan R. Wijbrans, Gareth R. Davies, Khachatur Meliksetian
Publikováno v:
Gondwana Research, 121, 168-195. Elsevier Inc.
Nikogosian, I K, Bracco Gartner, A J J, Mason, P R D, van Hinsbergen, D J J, Kuiper, K F, Kirscher, U, Matveev, S, Grigoryan, A, Grigoryan, E, Israyelyan, A, van Bergen, M J, Koornneef, J M, Wijbrans, J R, Davies, G R & Meliksetian, K 2023, ' The South Armenian Block: Gondwanan origin and Tethyan evolution in space and time ', Gondwana Research, vol. 121, pp. 168-195 . https://doi.org/10.1016/j.gr.2023.03.023
Nikogosian, I K, Bracco Gartner, A J J, Mason, P R D, van Hinsbergen, D J J, Kuiper, K F, Kirscher, U, Matveev, S, Grigoryan, A, Grigoryan, E, Israyelyan, A, van Bergen, M J, Koornneef, J M, Wijbrans, J R, Davies, G R & Meliksetian, K 2023, ' The South Armenian Block: Gondwanan origin and Tethyan evolution in space and time ', Gondwana Research, vol. 121, pp. 168-195 . https://doi.org/10.1016/j.gr.2023.03.023
The geodynamic evolution of the South Armenian Block (SAB) within the Tethyan realm during the Palaeozoic to present-day is poorly constrained. Much of the SAB is covered by Cenozoic sediments so that the relationships between the SAB and the neighbo
Publikováno v:
Human Resources for Health, Vol 18, Iss 1, Pp 1-11 (2020)
Abstract Background In-hospital logistic management barriers (LMB) are considered to be important risk factors for delays in TB diagnosis and treatment initiation (TB-dt), which perpetuates TB transmission and the development of TB morbidity and mort
Externí odkaz:
https://doaj.org/article/989013e7004648138fbe853ddda0b1b4
Publikováno v:
Applied Economics Letters. :1-4
Autor:
Julia Bashford, William Flowers, Charles Haworth, Judy Ryan, Anna Cervi, J R Al Dulayymi, Paul S Mason, Ashley Plank, Mark Baird, Andres Floto
Publikováno v:
Thorax. 78:309-312
The diagnosis of non-tuberculous mycobacteria (NTM) is a particular challenge in people with cystic fibrosis. Current standard diagnostic approaches rely on serial sputum culture, which is resource demanding, dependent on patient expectoration and ma
Autor:
Margriet L. Lantink, Wytze K. Lenstra, Joshua H.F.L. Davies, Rick Hennekam, David McB. Martin, Paul R.D. Mason, Gert-Jan Reichart, Caroline P. Slomp, Frederik J. Hilgen
Publikováno v:
Earth and Planetary Science Letters, 610, pp. 1-10
Earth and Planetary Science Letters, 610, 1-10
Earth and Planetary Science Letters, 610, 1-10
Regularly alternating reduction-oxidation (redox) patterns attributed to variations in the Earth's orbit and axis (Milankovitch cycles) are widely recorded in marine sediment successions of the Phanerozoic and attest to a dynamic history of biospheri