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Laser drilling of banknote substrates

Autor: Felix Abt, Martin Eichenberger, Daniel Förster

Publikováno v: Results in Optics, Vol 3, Iss , Pp 100058- (2021)

In banknote production, several security features are introduced into banknotes, including perforation of organic substrates like paper, polymer or their composites. This paper describes a comparative study about efficiency and quality aspects of las

Externí odkaz: https://doaj.org/article/bb4276c6398f44fa9902a77a530e42bb

Stellar flares detected with the Next Generation Transit Survey

Autor: James A. G. Jackman, Jack S. Acton, Michael R. Goad, Rosanna H. Tilbrook, Didier Queloz, Edward Gillen, Sarah L. Casewell, Boris T. Gänsicke, Samuel Gill, Simon Hodgkin, Maximilian N. Günther, David R. Anderson, Richard G. West, Liam Raynard, Beth A. Henderson, Joshua T. Briegal, Chloe E. Pugh, Daniel Bayliss, Matthew R. Burleigh, James S. Jenkins, Peter J. Wheatley, Christopher A. Watson

Publikováno v: Jackman, J A G, Wheatley, P J, Acton, J S, Anderson, D R, Bayliss, D, Briegal, J T, Burleigh, M R, Casewell, S L, Gänsicke, B T, Gill, S, Gillen, E, Goad, M R, Günther, M N, Henderson, B A, Hodgkin, S T, Jenkins, J S, Pugh, C, Queloz, D, Raynard, L, Tilbrook, R H, Watson, C A & West, R G 2021, ' Stellar flares detected with the Next Generation Transit Survey ', Monthly Notices of the Royal Astronomical Society, vol. 504, no. 3, pp. 3246-3264 . https://doi.org/10.1093/mnras/stab979

We present the results of a search for stellar flares in the first data release from the Next Generation Transit Survey (NGTS). We have found 610 flares from 339 stars, with spectral types between F8 and M6, the majority of which belong to the Galact

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98407398c515ba3226e3b80ea371e165
https://doi.org/10.1093/mnras/stab979

Failure Behavior of Thin Disc Sandstone under Coupled Bending-Seepage Condition

Autor: Hailing Kong, Luzhen Wang

Publikováno v: Geofluids, Vol 2020 (2020)

A floor aquifuge usually bends and fails when mining above a confined aquifer, which may lead to water inrush disaster. The floor aquifuge was simplified as a thin disc model in this paper, and a series of coupled bending-seepage tests of sandstone w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2318143d75b130be236dd6fda1c22aa0
https://doi.org/10.1155/2020/8830358

A strongly changing accretion morphology during the outburst decay of the neutron star X-ray binary 4U 1608−52

Autor: J. van den Eijnden, Zaven Arzoumanian, Rudy Wijnands, Deepto Chakrabarty, Nathalie Degenaar, Peter Bult, Aastha S. Parikh, Renee M. Ludlam, Jon M. Miller, Keith C. Gendreau

Publikováno v: arXiv
Monthly Notices of the Royal Astronomical Society, 493(1), 1318-1327. Oxford University Press

It is commonly assumed that the properties and geometry of the accretion flow in transient low-mass X-ray binaries (LMXBs) significantly change when the X-ray luminosity decays below $\sim 10^{-2}$ of the Eddington limit ($L_{\rm Edd}$). However, the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2630aa414c502a321634393dc810e5ee
https://doi.org/10.1093/mnras/staa423