Zobrazeno 1 - 10 of 28 pro vyhledávání: '"M L Pretorius"'
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Akademický článek
The Space Density of Magnetic and Non-magnetic Cataclysmic Variables, and Implications for CV Evolution
Autor: M. L. Pretorius
Publikováno v: Acta Polytechnica CTU Proceedings, Vol 2, Iss 1, Pp 26-32 (2015)
We present constraints on the space densities of non-magnetic and magnetic cataclysmic variables, and discuss some implications for models of the evolution of CVs. The high predicted non-magnetic CV space density is only consistent with observations
Externí odkaz: https://doaj.org/article/1465df7ed4764c33b4dfa9bee35a8b22
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2
Radio and optical observations of the possible AE Aqr twin, LAMOST J024048.51+195226.9
Autor: David R. Williams, Ian Heywood, D. A. H. Buckley, Christian Knigge, D. M. Hewitt, M. L. Pretorius, Rob Fender, Hannah L. Worters, Stephen Potter, James Miller-Jones, Patrick Woudt
Publikováno v: Pretorius, M L, Hewitt, D M, Woudt, P A, Fender, R P, Heywood, I, Knigge, C, Miller-Jones, J C A, Buckley, D A H, Worters, H L, Potter, S B & Williams, D R A 2021, ' Radio and optical observations of the possible AE Aqr twin, LAMOST J024048.51+195226.9 ', Monthly Notices of the Royal Astronomical Society, vol. 503, no. 3, pp. 3692-3697 . https://doi.org/10.1093/mnras/stab498
Thorstensen (2020) recently argued that the cataclysmic variable (CV) LAMOST J024048.51+195226.9 may be a twin to the unique magnetic propeller system AE Aqr. If this is the case, two predictions are that it should display a short period white dwarf
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::792f86a450b4890d648e5b1cac69091b
https://doi.org/10.1093/mnras/stab498
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3
Bow shocks, nova shells, disc winds and tilted discs: the nova-like V341 Ara has it all
Autor: N Castro Segura, C Knigge, J A Acosta-Pulido, D Altamirano, S del Palacio, J V Hernandez Santisteban, M Pahari, P Rodriguez-Gil, C Belardi, D A H Buckley, M R Burleigh, M Childress, R P Fender, D M Hewitt, D J James, R B Kuhn, N P M Kuin, J Pepper, A A Ponomareva, M L Pretorius, J E Rodríguez, K G Stassun, D R A Williams, P A Woudt
Publikováno v: Castro Segura, N, Knigge, C, Acosta-Pulido, J A, Altamirano, D, del Palacio, S, Hernandez Santisteban, J V, Pahari, M, Rodriguez-Gil, P, Belardi, C, Buckley, D A H, Burleigh, M R, Childress, M, Fender, R P, Hewitt, D M, James, D J, Kuhn, R B, Kuin, N P M, Pepper, J, Ponomareva, A A, Pretorius, M L, Rodríguez, J E, Stassun, K G, Williams, D R A & Woudt, P A 2021, ' Bow shocks, nova shells, disc winds and tilted discs: the nova-like V341 Ara has it all ', Monthly Notices of the Royal Astronomical Society, vol. 501, no. 2, pp. 1951-1969 . https://doi.org/10.1093/mnras/staa2516
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
V341 Ara was recently recognised as one of the closest (d ~ 150 pc) and brightest (V~ 10) nova-like cataclysmic variables. This unique system is surrounded by a bright emission nebula, likely to be the remnant of a recent nova eruption. Embedded with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::141bf331554df5104d38e5e50d5675eb
https://eprints.soton.ac.uk/443666/
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4
Gaia Early Data Release 3: Gaia photometric science alerts
Autor: Gerry Gilmore, F. De Angeli, David Alexander Kann, Richard Wilson, Danny Steeghs, Cs. Kiss, Łukasz Wyrzykowski, S. Komossa, L. Palaversa, Ulrich Kolb, S. van Velzen, L. Tomasella, L. Eyer, Ágnes Kóspál, Axel Schwope, A. Yoldas, D. Padeletti, G. Kovács, N. Schartel, Christopher J. Davis, Laszlo Szabados, M. L. Pretorius, M. Fridman, J. M. Carrasco, D. L. Harrison, N. Blagorodnova, A. Hourihane, W. van Reeven, Morgan Fraser, P. Tisserand, D. W. Evans, G. Holland, P. J. Richards, K. Kruszyńska, Nicholas Rowell, Z. Nagy, Elmé Breedt, J. H. J. de Bruijne, Sergey E. Koposov, Mária Kun, M. van Leeuwen, Timothy Butterley, Christian Knigge, G. Busso, F. van Leeuwen, Martin Dominik, A. Gomboc, J. Castañeda, S. J. Smartt, J. Japelj, N. Ihanec, Simon Hodgkin, N. Garralda, Carole Mundell, A. A. Mahabal, S. G. Baker, S. P. Littlefair, J. S. Clark, P. T. O'Brien, Michael Davidson, Brigitta Sipőcz, Maroussia Roelens, Gisella Clementini, Thomas Wevers, Alexander Scholz, Giuseppe Leto, Peter G. Jonker, A. Delgado, P. Ábrahám, B. Holl, George M. Seabroke, Gábor Marton, N. A. Walton, C. Diener, G. Altavilla, Patricia A. Whitelock, Valério A. R. M. Ribeiro, Goran Damljanović, P. Burgess, D. R. Young, M. Riello, P. Osborne, Claus Fabricius, Nigel Hambly, Michael D. Smith, Mark Sullivan, D. Eappachen, A. G. A. Brown, Krzysztof A. Rybicki, H. Campbell, Raphael Guerra, Timo Prusti, J. J. González-Vidal, I. Serraller, Andrzej Pigulski, Fraser Lewis, Dirk Froebrich, V. S. Dhillon, Mark Cropper, Z. Kostrzewa-Rutkowska, Chris M. Copperwheat, Jordi Portell, Ulrich Bastian, L. K. Hardy, Michel Dennefeld, P. Esquej, E. Szegedi-Elek, Guy Rixon, Francois Mignard, C. Dolding, S. Cowell
Publikováno v: Astronomy & Astrophysics, 652, 1-25
Koposov, S E, Davidson, M & Hambly, N C & Rowell, N 2021, ' Gaia Early Data Release 3 : Gaia Photometric Science Alerts ', Astronomy and Astrophysics, vol. 652, A76, pp. 1-25 . https://doi.org/10.1051/0004-6361/202140735
Astronomy & Astrophysics, 652, pp. 1-25
Digital.CSIC. Repositorio Institucional del CSIC
instname
Astronomy and Astrophysics, 652
Full list of authors: Hodgkin, S. T.; Harrison, D. L.; Breedt, E.; Wevers, T.; Rixon, G.; Delgado, A.; Yoldas, A.; Kostrzewa-Rutkowska, Z.; Wyrzykowski, Ł.; van Leeuwen, M.; Blagorodnova, N.; Campbell, H.; Eappachen, D.; Fraser, M.; Ihanec, N.; Kopo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ef1d114d3d61a4dfcdf95b1bfe9a3ea
https://hdl.handle.net/https://repository.ubn.ru.nl/handle/2066/236510
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5
A MeerKAT survey of nearby nova-like cataclysmic variables
Autor: M. L. Pretorius, N. Castro Segura, Kunal Mooley, David R. Williams, Ian Heywood, Antonia Rowlinson, Benjamin Stappers, R. P. Armstrong, Ralph A. M. J. Wijers, Paul J. Groot, D. M. Hewitt, Vanessa McBride, A. J. van der Horst, Christian Knigge, Rob Fender, Elmar Koerding, Assaf Horesh, E. Tremou, James Miller-Jones, Patrick Woudt
Publikováno v: Monthly Notices of the Royal Astronomical Society, 496(3), 2542-2557. Oxford University Press
Monthly Notices of the Royal Astronomical Society, 496, 2542-2557
Monthly Notices of the Royal Astronomical Society, 496, 3, pp. 2542-2557
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 496 (3), pp.2542-2557. ⟨10.1093/mnras/staa1747⟩
We present the results of MeerKAT radio observations of eleven nearby novalike cataclysmic variables. We have detected radio emission from IM Eri, RW Sex, V3885 Sgr and V603 Aql. While RW Sex, V3885 Sgr and V603 Aql had been previously detected, this
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aef20870ebb21e80d6a778bedfb31015
https://dare.uva.nl/personal/pure/en/publications/a-meerkat-survey-of-nearby-novalike-cataclysmic-variables(003de52b-7888-4678-8434-77fc2c4f1a9b).html
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6
A spectroscopic, photometric, polarimetric, and radio study of the eclipsing polar UZ Fornacis: the first simultaneous SALT and MeerKAT observations
Autor: Z N Khangale, S B Potter, P A Woudt, D A H Buckley, A N Semena, E J Kotze, D N Groenewald, D M Hewitt, M L Pretorius, R P Fender, P Groot, S Bloemen, M Klein-Wolt, E Körding, R Le Poole, V A McBride, L Townsend, K Paterson, D L A Pieterse, P Vreeswijk
Publikováno v: Monthly Notices of the Royal Astronomical Society, 492, 3, pp. 4298-4312
Monthly Notices of the Royal Astronomical Society, 492, 4298-4312
Monthly Notices of the Royal Astronomical Society, 492(3), 4298-4312
We present phase-resolved spectroscopy, photometry and circular spectropolarimetry of the eclipsing polar UZ Fornacis. Doppler tomography of the strongest emission lines using the inside-out projection revealed the presence of three emission regions:
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3277249108e2573ebdb51fef65658053
https://hdl.handle.net/2066/216860
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7
On the use of variability time-scales as an early classifier of radio transients and variables
Autor: M. Pietka, M. L. Pretorius, Tim D. Staley, Rob Fender
We have shown previously that a broad correlation between the peak radio luminosity and the variability time-scales, approximately L ~ t^5, exists for variable synchrotron emitting sources and that different classes of astrophysical source occupy dif
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff44281b543eac2f1d8e74a48e5c3a92
https://ora.ox.ac.uk/objects/uuid:07366992-56d5-4347-9bf7-cbf906c6aa55
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8
Two fast X-ray transients in archival Chandra data
Autor: Peter G. Jonker, M. L. Pretorius, A. Glennie, Rob Fender, Takahiro Nagayama
Publikováno v: Monthly Notices of the Royal Astronomical Society, 450, 3765-3770
Monthly Notices of the Royal Astronomical Society, 450, 4, pp. 3765-3770
We present the discovery of two new X-ray transients in archival Chandra data. The first transient, XRT 110103, occurred in January 2011 and shows a sharp rise of at least three orders of magnitude in count rate in less than 10 s, a flat peak for abo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b20e3883256b6fe32232ca3f6d30d58c
https://hdl.handle.net/2066/141198
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9
Proper-motion age dating of the progeny of Nova Scorpii AD 1437
Autor: C. Tappert, Ashley Pagnotta, Anthony F. J. Moffat, M. L. Pretorius, M. F. Bode, K. Drozd, Jonathan E. Grindlay, L. A. Crause, Joanna Mikolajewska, Linda Schmidtobreick, F. R. Stephenson, Michael M. Shara, K. Iłkiewicz, David R. Zurek, Jacqueline K. Faherty, I. Fuentes-Morales
Publikováno v: Nature. 548(7669)
'Cataclysmic variables' are binary star systems in which one star of the pair is a white dwarf, and which often generate bright and energetic stellar outbursts. Classical novae are one type of outburst: when the white dwarf accretes enough matter fro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f800865f70ae72efaf91852feb53e776
https://pubmed.ncbi.nlm.nih.gov/28858308
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10
The peculiar mass-loss history of SN 2014C as revealed through AMI radio observations
Autor: Y. C. Perrott, M. L. Pretorius, Rob Fender, Assaf Horesh, David Titterington, Richard M. Plotkin, G. E. Anderson, Megan Argo, Miguel A. Pérez-Torres, Kunal Mooley, Tim D. Staley, A. Rushton, Paul Hancock, Clare Rumsey, Robert Beswick
Publikováno v: Anderson, G E, Horesh, A, Mooley, KP, Rushton, AP, Fender, R P, Staley, T D, Argo, M, Beswick, R, {Hancock}, P J, Perez-Torres, MA, Perrott, Y, Plotkin, RM, Pretorius, M L, Rumsey, C & Titterington, D J 2017, ' The peculiar mass-loss history of SN 2014C as revealed through AMI radio observations ', Monthly Notices of the Royal Astronomical Society . https://doi.org/10.1093/mnras/stw3310
We present a radio light curve of supernova (SN) 2014C taken with the Arcminute Microkelvin Imager (AMI) Large Array at 15.7 GHz. Optical observations presented by Milisavljevic et al. demonstrated that SN 2014C metamorphosed from a stripped-envelope
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::896629ecd7d415ca83896b359fcd645a
https://www.research.manchester.ac.uk/portal/en/publications/the-peculiar-massloss-history-of-sn-2014c-as-revealed-through-ami-radio-observations(ba5e3939-755a-402e-9f29-d8666ef47005).html
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