Zobrazeno 1 - 10
of 188
pro vyhledávání: '"S P Littlefair"'
Autor:
D. Eappachen, P. G. Jonker, A. J. Levan, J. Quirola-Vásquez, M. A. P. Torres, F. E. Bauer, V. S. Dhillon, T. Marsh, S. P. Littlefair, M. E. Ravasio, M. Fraser
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 91 (2023)
Fast X-ray Transients (FXTs) are X-ray flares with durations ranging from a few hundred seconds to a few hours. Possible origins include the tidal disruption of a white dwarf by an intermediate-mass black hole, a supernova shock breakout, or a binary
Externí odkaz:
https://doaj.org/article/3baa9dc21f224c1a81f5ef99fe1e8a3d
Autor:
James Munday, T R Marsh, Mark Hollands, Ingrid Pelisoli, Danny Steeghs, Pasi Hakala, Elmé Breedt, Alex Brown, V S Dhillon, Martin J Dyer, Matthew Green, Paul Kerry, S P Littlefair, Steven G Parsons, Dave Sahman, Sorawit Somjit, Boonchoo Sukaum, James Wild
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 518:5123-5139
The shortest-period binary star system known to date, RX J0806.3+1527 (HM Cancri), has now been observed in the optical for more than two decades. Although it is thought to be a double degenerate binary undergoing mass transfer, an early surprise was
Autor:
I M McHardy, M Beard, E Breedt, J H Knapen, F M Vincentelli, M Veresvarska, V S Dhillon, T R Marsh, S P Littlefair, K Horne, R Glew, M R Goad, E Kammoun, D Emmanoulopoulos
We present fast (~200s sampling) ugriz photometry of the low mass AGN NGC 4395 with the Liverpool Telescope, followed by very fast (3s sampling) us, gs, rs, is and zs simultaneous monitoring with HiPERCAM on the 10.4m GTC. These observations provide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f170713412509a4d2b0cb21b7fcdffbc
http://arxiv.org/abs/2212.08015
http://arxiv.org/abs/2212.08015
Autor:
S. Yotthanathong, Kevin B. Burdge, Elmé Breedt, T. R. Marsh, Richard Ashley, Ingrid Pelisoli, A. Aungwerojwit, Pasi Hakala, Martin J. Dyer, P. Kerry, M. J. Green, D. I. Sahman, V. S. Dhillon, S. P. Littlefair, A. J. Brown, K. Chanthorn, J. F. Wild, Steven G. Parsons
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 507:6132-6139
Accreting magnetic white dwarfs offer an opportunity to understand the interplay between spin-up and spin-down torques in binary systems. Monitoring of the white dwarf spin may reveal whether the white dwarf spin is currently in a state of near-equil
Autor:
S. R. Kulkarni, S Wong, Reed Riddle, J. van Roestel, Lars Bildsten, Dmitry A. Duev, S. P. Littlefair, David Goldstein, R. R. Laher, Kevin B. Burdge, T. A. Prince, M. J. Green, Christoffer Fremling, Thomas Kupfer, Matthew J. Graham, V. S. Dhillon, Eric C. Bellm, T. R. Marsh, B. Rusholme, Richard Dekany, Paula Szkody, Michael W. Coughlin
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 512:5440-5461
AM CVn systems are ultra-compact, helium-rich, accreting binaries with degenerate or semi-degenerate donors. We report the discovery of five new eclipsing AM CVn systems with orbital periods of 61.5, 55.5, 53.3, 37.4, and 35.4 minutes. These systems
Autor:
Ingrid Pelisoli, T R Marsh, S G Parsons, A Aungwerojwit, R P Ashley, E Breedt, A J Brown, V S Dhillon, M J Dyer, M J Green, P Kerry, S P Littlefair, D I Sahman, T Shahbaz, J F Wild, A Chakpor, R Lakhom
AR Scorpii (AR Sco) is the only radio-pulsing white dwarf known to date. It shows a broad-band spectrum extending from radio to X-rays whose luminosity cannot be explained by thermal emission from the system components alone, and is instead explained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f33e875af296d3adab9796b39033d99
http://arxiv.org/abs/2208.08450
http://arxiv.org/abs/2208.08450
Autor:
D Eappachen, P G Jonker, M Fraser, M A P Torres, V S Dhillon, T Marsh, S P Littlefair, J Quirola-Vásquez, K Maguire, D Mata Sánchez, G Cannizzaro, Z Kostrzewa-Rutkowska, T Wevers, F Onori, Anne Inkenhaag, S J Brennan
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 514, 1, pp. 302-312
Monthly Notices of the Royal Astronomical Society, 514(1), 302-312
Monthly Notices of the Royal Astronomical Society, 514, 302-312
Monthly Notices of the Royal Astronomical Society, 514(1), 302-312
Monthly Notices of the Royal Astronomical Society, 514, 302-312
Over the past few years, $\sim$30 extragalactic fast X-ray transients (FXRTs) have been discovered, mainly in Chandra and XMM-Newton data. Their nature remains unclear, with proposed origins including a double neutron star merger, a tidal disruption
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f662e0ecc81e4f8b90cdb2a77d140ea2
https://eprints.whiterose.ac.uk/188106/1/stac1194.pdf
https://eprints.whiterose.ac.uk/188106/1/stac1194.pdf
Autor:
Kevin B. Burdge, Thomas R. Marsh, Jim Fuller, Eric C. Bellm, Ilaria Caiazzo, Deepto Chakrabarty, Michael W. Coughlin, Kishalay De, V. S. Dhillon, Matthew J. Graham, Pablo Rodríguez-Gil, Amruta D. Jaodand, David L. Kaplan, Erin Kara, Albert K. H. Kong, S. R. Kulkarni, Kwan-Lok Li, S. P. Littlefair, Walid A. Majid, Przemek Mróz, Aaron B. Pearlman, E. S. Phinney, Jan van Roestel, Robert A. Simcoe, Igor Andreoni, Andrew J. Drake, Richard G. Dekany, Dmitry A. Duev, Erik C. Kool, Ashish A. Mahabal, Michael S. Medford, Reed Riddle, Thomas A. Prince
Over a dozen millisecond pulsars are ablating low-mass companions in close binary systems. In the original "black widow", the 8-hour orbital period eclipsing pulsar PSR J1959+2048 (PSR B1957+20), high energy emission originating from the pulsar is ir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a602a3542eed06c32003c95c04150397
https://resolver.caltech.edu/CaltechAUTHORS:20220505-812251500
https://resolver.caltech.edu/CaltechAUTHORS:20220505-812251500
Autor:
P. T. O'Brien, David Mkrtichian, Kendall Ackley, U. Burhanudin, T. Heikkilä, R. Cutter, Andrew J. Levan, Paul Chote, Benjamin P. Gompertz, Justyn R. Maund, Supachai Awiphan, Y. L. Mong, Klaas Wiersema, E. J. Daw, James McCormac, G. Ramsay, Krzysztof Ulaczyk, S. Tooke, Enric Palle, D. Mata Sánchez, R. Eyles-Ferris, Christopher J. Duffy, T. Killestein, Saran Poshyachinda, Eric Thrane, Seppo Mattila, James Mullaney, S. Williams, E. Rol, Puji Irawati, S. Aukkaravittayapun, L. K. Nuttall, Don Pollacco, Rubina Kotak, Danny Steeghs, Rene P. Breton, Utane Sawangwit, R. L. C. Starling, A. Chrimes, J. D. Lyman, L. Makrygianni, Elizabeth R. Stanway, Mark Kennedy, S. P. Littlefair, P. A. Strøm, Duncan K. Galloway, Martin J. Dyer, V. S. Dhillon
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 503, 4, pp. 4838-4854
Monthly Notices of the Royal Astronomical Society
Killestein, T L, Lyman, J, Steeghs, D, Ackley, K, Dyer, M J, Ulaczyk, K, Cutter, R, Mong, Y-L, Galloway, D K, Dhillon, V, O'Brien, P, Ramsay, G, Poshyachinda, S, Kotak, R, Breton, R P, Nuttall, L K, Pallé, E, Pollacco, D, Thrane, E, Aukkaravittayapun, S, Awiphan, S, Burhanudin, U, Chote, P, Chrimes, A, Daw, E, Duffy, C, Eyles-Ferris, R, Gompertz, B, Heikkilä, T, Irawati, P, Kennedy, M R, Levan, A, Littlefair, S, Makrygianni, L, Sánchez, D M, Mattila, S, Maund, J, McCormac, J, Mkrtichian, D, Mullaney, J, Rol, E, Sawangwit, U, Stanway, E, Starling, R, Strøm, P A, Tooke, S & Wiersema, K 2021, ' Transient-optimised real-bogus classification with Bayesian convolutional neural networks-sifting the GOTO candidate stream ', Monthly Notices of the Royal Astronomical Society, vol. 503, no. 4, pp. 4838-4854 . https://doi.org/10.1093/mnras/stab633
arXiv
Monthly Notices of the Royal Astronomical Society, 503, 4838-4854
Monthly Notices of the Royal Astronomical Society
Killestein, T L, Lyman, J, Steeghs, D, Ackley, K, Dyer, M J, Ulaczyk, K, Cutter, R, Mong, Y-L, Galloway, D K, Dhillon, V, O'Brien, P, Ramsay, G, Poshyachinda, S, Kotak, R, Breton, R P, Nuttall, L K, Pallé, E, Pollacco, D, Thrane, E, Aukkaravittayapun, S, Awiphan, S, Burhanudin, U, Chote, P, Chrimes, A, Daw, E, Duffy, C, Eyles-Ferris, R, Gompertz, B, Heikkilä, T, Irawati, P, Kennedy, M R, Levan, A, Littlefair, S, Makrygianni, L, Sánchez, D M, Mattila, S, Maund, J, McCormac, J, Mkrtichian, D, Mullaney, J, Rol, E, Sawangwit, U, Stanway, E, Starling, R, Strøm, P A, Tooke, S & Wiersema, K 2021, ' Transient-optimised real-bogus classification with Bayesian convolutional neural networks-sifting the GOTO candidate stream ', Monthly Notices of the Royal Astronomical Society, vol. 503, no. 4, pp. 4838-4854 . https://doi.org/10.1093/mnras/stab633
arXiv
Monthly Notices of the Royal Astronomical Society, 503, 4838-4854
Large-scale sky surveys have played a transformative role in our understanding of astrophysical transients, only made possible by increasingly powerful machine learning-based filtering to accurately sift through the vast quantities of incoming data g
Autor:
Kevin B. Burdge, Kareem El-Badry, Thomas R. Marsh, Saul Rappaport, Warren R. Brown, Ilaria Caiazzo, Deepto Chakrabarty, V. S. Dhillon, Jim Fuller, Boris T. Gänsicke, Matthew J. Graham, Erin Kara, S. R. Kulkarni, S. P. Littlefair, Przemek Mróz, Pablo Rodríguez-Gil, Jan van Roestel, Robert A. Simcoe, Eric C. Bellm, Andrew J. Drake, Richard G. Dekany, Steven L. Groom, Russ R. Laher, Frank J. Masci, Reed Riddle, Roger M. Smith, Thomas A. Prince
Publikováno v:
Nature. 610(7932)
Of more than a thousand known cataclysmic variables (CVs), where a white dwarf is accreting from a hydrogen-rich star, only a dozen have orbital periods below 75 minutes