Zobrazeno 1 - 10
of 3 506
pro vyhledávání: '"BROWN, ALEX"'
Autor:
Chickles, Emma T., Burdge, Kevin B., Chakraborty, Joheen, Dhillon, Vik S., Draghis, Paul, Hughes, Scott A., Munday, James, Rappaport, Saul A., Tonry, John, Bauer, Evan, Brown, Alex, Castro, Noel, Chakrabarty, Deepto, Dyer, Martin, El-Badry, Kareem, Frebel, Anna, Furesz, Gabor, Garbutt, James, Green, Matthew J., Householder, Aaron, Jarvis, Daniel, Kara, Erin, Kennedy, Mark R., Kerry, Paul, Littlefair, Stuart P, McCormac, James, Mo, Geoffrey, Ng, Mason, Parsons, Steven, Pelisoli, Ingrid, Pike, Eleanor, Prince, Thomas A., Ricker, George R., van Roestel, Jan, Sahman, David, Shen, Ken J., Simcoe, Robert A., Tremblay, Pier-Emmanuel, Vanderburg, Andrew, Wong, Tin Long Sunny
Type Ia supernovae, critical for studying cosmic expansion, arise from thermonuclear explosions of white dwarfs, but their precise progenitor pathways remain unclear. Growing evidence supports the ``double-degenerate'' scenario, where two white dwarf
Externí odkaz:
http://arxiv.org/abs/2411.19916
Autor:
Chakraborty, Joheen, Burdge, Kevin B., Rappaport, Saul A., Munday, James, Chen, Hai-Liang, Rodríguez-Gil, Pablo, Dhillon, V. S., Hughes, Scott A., Nelemans, Gijs, Kara, Erin, Bellm, Eric C., Brown, Alex J., Segura, Noel Castro, Chen, Tracy X., Chickles, Emma, Dyer, Martin J., Dekany, Richard, Drake, Andrew J., Garbutt, James, Graham, Matthew J., Green, Matthew J., Jarvis, Dan, Kennedy, Mark R., Kerry, Paul, Kulkarni, S. R., Littlefair, Stuart P., Mahabal, Ashish A., Masci, Frank J., McCormac, James, Parsons, Steven G., Pelisoli, Ingrid, Pike, Eleanor, Prince, Thomas A., Riddle, Reed, van Roestel, Jan, Sahman, Dave, Wold, Avery, Wong, Tin Long Sunny
We report the discovery of three ultracompact binary white dwarf systems hosting accretion disks, with orbital periods of 7.95, 8.68, and 13.15 minutes. This significantly augments the population of mass-transferring binaries at the shortest periods,
Externí odkaz:
http://arxiv.org/abs/2411.12796
Autor:
Melvin, Thomas, Shipway, Ben, Wood, Nigel, Benacchio, Tommaso, Bendall, Thomas, Boutle, Ian, Brown, Alex, Johnson, Christine, Kent, James, Pring, Stephen, Smith, Chris, Zerroukat, Mohamed, Cotter, Colin, Thuburn, John
The reformulation of the Met Office's dynamical core for weather and climate prediction previously described by the authors is extended to spherical domains using a cubed-sphere mesh. This paper updates the semi-implicit mixed finite-element formulat
Externí odkaz:
http://arxiv.org/abs/2402.13738
Autor:
Amaral, Larissa Antunes, Munday, James, Vučković, Maja, Pelisoli, Ingrid, Németh, Péter, Zorotovic, Monica, Marsh, T. R., Littlefair, S. P., Dhillon, V. S., Brown, Alex J.
Approximately 150 low-mass white dwarfs, with masses below 0.4Msun, have been discovered. The majority of these low-mass WDs are observed in binary systems as they cannot be formed through single-star evolution within the Hubble time. In this study,
Externí odkaz:
http://arxiv.org/abs/2402.10159
Autor:
Green, Matthew J., Hermes, J. J., Barlow, Brad N., Marsh, T. R., Pelisoli, Ingrid, Gänsicke, Boris T., Kaiser, Ben C., Romero, Alejandra, Amaral, Larissa Antunes, Corcoran, Kyle, Grupe, Dirk, Kennedy, Mark R., Kepler, S. O., Munday, James, Ashley, R. P., Baran, Andrzej S., Breedt, Elmé, Brown, Alex J., Dhillon, V. S., Dyer, Martin J., Kerry, Paul, King, George W., Littlefair, S. P., Parsons, Steven G., Sahman, David I.
AM CVn-type systems are ultracompact, helium-accreting binary systems which are evolutionarily linked to the progenitors of thermonuclear supernovae and are expected to be strong Galactic sources of gravitational waves detectable to upcoming space-ba
Externí odkaz:
http://arxiv.org/abs/2311.01255
The main components of an atmospheric model for numerical weather prediction are the dynamical core, which describes the resolved flow, and the physical parametrisations, which capture the effects of unresolved processes. Additionally, models used fo
Externí odkaz:
http://arxiv.org/abs/2310.01255
Autor:
Caiazzo, Ilaria, Burdge, Kevin B., Tremblay, Pier-Emmanuel, Fuller, James, Ferrario, Lilia, Gaensicke, Boris T., Hermes, J. J., Heyl, Jeremy, Kawka, Adela, Kulkarni, S. R., Marsh, Thomas R., Mroz, Przemek, Prince, Thomas A., Richer, Harvey B., Rodriguez, Antonio C., van Roestel, Jan, Vanderbosch, Zachary P., Vennes, Stephane, Wickramasinghe, Dayal, Dhillon, Vikram S., Littlefair, Stuart P., Munday, James, Pelisoli, Ingrid, Perley, Daniel, Bellm, Eric C., Breedt, Elme, Brown, Alex J., Dekany, Richard, Drake, Andrew, Dyer, Martin J., Graham, Matthew J., Green, Matthew J., Laher, Russ R., Kerry, Paul, Parsons, Steven G., Riddle, Reed L., Rusholme, Ben, Sahman, Dave I.
Publikováno v:
Nature 620, 61-66 (2023)
White dwarfs, the extremely dense remnants left behind by most stars after their death, are characterised by a mass comparable to that of the Sun compressed into the size of an Earth-like planet. In the resulting strong gravity, heavy elements sink t
Externí odkaz:
http://arxiv.org/abs/2308.07430
Autor:
Munday, James, Tremblay, P. -E., Hermes, J. J., Barlow, Brad, Pelisoli, Ingrid, Marsh, T. R., Parsons, Steven G., Jones, David, Kepler, S. O., Brown, Alex, Littlefair, S. P., Hegedus, R., Baran, Andrzej, Breedt, Elmé, Dhillon, V. S., Dyer, Martin J., Green, Matthew J., Kennedy, Mark R., Kerry, Paul, Lopez, Isaac D., Romero, Alejandra D., Sahman, Dave, Worters, Hannah L.
We present the discovery of the eclipsing double white dwarf (WD) binary WDJ 022558.21-692025.38 that has an orbital period of 47.19 min. Following identification with the Transiting Exoplanet Survey Satellite, we obtained time-series ground based sp
Externí odkaz:
http://arxiv.org/abs/2308.00036
Autor:
Sergeev, Denis E., Mayne, Nathan J., Bendall, Thomas, Boutle, Ian A., Brown, Alex, Kavcic, Iva, Kent, James, Kohary, Krisztian, Manners, James, Melvin, Thomas, Olivier, Enrico, Ragta, Lokesh K., Shipway, Ben J., Wakelin, Jon, Wood, Nigel, Zerroukat, Mohamed
We demonstrate that LFRic-Atmosphere, a model built using the Met Office's GungHo dynamical core, is able to reproduce idealised large-scale atmospheric circulation patterns specified by several widely-used benchmark recipes. This is motivated by the
Externí odkaz:
http://arxiv.org/abs/2306.03614
Autor:
Brown, Alex J., Parsons, Steven G., van Roestel, Jan, Rebassa-Mansergas, Alberto, Breedt, Elmé, Dhillon, Vik S., Dyer, Martin J., Green, Matthew J., Kerry, Paul, Littlefair, Stuart P., Marsh, Thomas R., Munday, James, Pelisoli, Ingrid, Sahman, David I., Wild, James F.
Wide-field time-domain photometric sky surveys are now finding hundreds of eclipsing white dwarf plus M dwarf binaries, a population encompassing a wealth of information and potential insight into white dwarf and close binary astrophysics. Precise fo
Externí odkaz:
http://arxiv.org/abs/2302.11392