Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Sitwell, Michael"'
Autor:
Sitwell, Michael
The prevailing model of modern cosmology stipulates the existence of exotic substances such as dark matter and dark energy and events such as inflation. However, their underlying nature is not currently known. In this thesis, we explore new models an
Externí odkaz:
http://hdl.handle.net/2429/51117
Autor:
Bandura, Kevin, Addison, Graeme E., Amiri, Mandana, Bond, J. Richard, Campbell-Wilson, Duncan, Connor, Liam, Cliche, Jean-Francois, Davis, Greg, Deng, Meiling, Denman, Nolan, Dobbs, Matt, Fandino, Mateus, Gibbs, Kenneth, Gilbert, Adam, Halpern, Mark, Hanna, David, Hincks, Adam D., Hinshaw, Gary, Hofer, Carolin, Klages, Peter, Landecker, Tom L., Masui, Kiyoshi, Mena, Juan, Newburgh, Laura B., Pen, Ue-Li, Peterson, Jeffrey B., Recnik, Andre, Shaw, J. Richard, Sigurdson, Kris, Sitwell, Michael, Smecher, Graeme, Smegal, Rick, Vanderlinde, Keith, Wiebe, Don
A pathfinder version of CHIME (the Canadian Hydrogen Intensity Mapping Experiment) is currently being commissioned at the Dominion Radio Astrophysical Observatory (DRAO) in Penticton, BC. The instrument is a hybrid cylindrical interferometer designed
Externí odkaz:
http://arxiv.org/abs/1406.2288
Autor:
Newburgh, Laura B., Addison, Graeme E., Amiri, Mandana, Bandura, Kevin, Bond, J. Richard, Connor, Liam, Cliche, Jean-François, Davis, Greg, Deng, Meiling, Denman, Nolan, Dobbs, Matt, Fandino, Mateus, Fong, Heather, Gibbs, Kenneth, Gilbert, Adam, Griffin, Elizabeth, Halpern, Mark, Hanna, David, Hincks, Adam D., Hinshaw, Gary, Höfer, Carolin, Klages, Peter, Landecker, Tom, Masui, Kiyoshi, Parra, Juan Mena, Pen, Ue-Li, Peterson, Jeff, Recnik, Andre, Shaw, J. Richard, Sigurdson, Kris, Sitwell, Michael, Smecher, Graeme, Smegal, Rick, Vanderlinde, Keith, Wiebe, Don
Publikováno v:
Proc. SPIE 9145, Ground-based and Airborne Telescopes V (2014)
The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a transit interferometer currently being built at the Dominion Radio Astrophysical Observatory (DRAO) in Penticton, BC, Canada. We will use CHIME to map neutral hydrogen in the frequency r
Externí odkaz:
http://arxiv.org/abs/1406.2267
Publikováno v:
Phys. Rev. D 91, 083514 (2015)
In this paper we continue to develop the m-mode formalism, a technique for efficient and optimal analysis of wide-field transit radio telescopes, targeted at 21 cm cosmology. We extend this formalism to give an accurate treatment of the polarised sky
Externí odkaz:
http://arxiv.org/abs/1401.2095
Publikováno v:
2014, MNRAS, 438, 2664
We investigate the effects of warm dark matter (WDM) on the cosmic 21-cm signal. If dark matter exists as WDM instead of cold dark matter (CDM), its non-negligible velocities can inhibit the formation of low-mass halos that normally form first in CDM
Externí odkaz:
http://arxiv.org/abs/1310.0029
Autor:
Sitwell, Michael, Sigurdson, Kris
Publikováno v:
Phys. Rev. D 89, 123509 (2014)
A sufficiently rigid relativistic elastic solid can be stable for negative pressure values and thus is capable of driving a stage of accelerated expansion. If a relativistic elastic solid drove an inflationary stage in the early Universe, quantum mec
Externí odkaz:
http://arxiv.org/abs/1306.5762
Publikováno v:
Astrophys.J. 781 (2014) 57
In this paper we describe the spherical harmonic transit telescope, a novel formalism for the analysis of transit radio telescopes. This all-sky approach bypasses the curved sky complications of traditional interferometry and so is particularly well
Externí odkaz:
http://arxiv.org/abs/1302.0327
Autor:
Buehner, Mark, Caron, Jean-Francois, Lapalme, Ervig, Caya, Alain, Du, Ping, Rochon, Yves, Skachko, Sergey, Shahabadi, Maziar Bani, Heilliette, Sylvain, Deshaies-Jacques, Martin, Chang, Weiguang, Sitwell, Michael
Publikováno v:
Geoscientific Model Development Discussions; 4/9/2024, p1-29, 29p
Autor:
Cao, Hansen, Henze, Daven K, Zhu, Liye, Shephard, Mark W, Cady-Pereira, Karen, Dammers, Enrico, Sitwell, Michael, Heath, Nicholas, Lonsdale, Chantelle, Bash, Jesse O, Miyazaki, Kazuyuki, Flechard, Christophe, Fauvel, Yannick, Kruit, Roy Wichink, Feigenspan, Stefan, Brümmer, Christian, Schrader, Frederik, Twigg, Marsailidh M, Leeson, Sarah, Tang, Yuk S, Stephens, Amy C M, Braban, Christine, Vincent, Keith, Meier, Mario, Seitler, Eva, Geels, Camilla, Ellermann, Thomas, Sanocka, Agnieszka, Capps, Shannon L
We conduct the first 4D-Var inversion of NH3 accounting for NH3 bi-directional flux, using CrIS satellite NH3 observations over Europe in 2016. We find posterior NH3 emissions peak more in springtime than prior emissions at continental to national sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=narcis______::6b76195476a32a1f53225f151e62118b
http://hdl.handle.net/10029/626506
http://hdl.handle.net/10029/626506
Publikováno v:
Atmospheric Chemistry and Physics. 22:6595-6624
An ensemble-variational inversion system is developed for the estimation of ammonia emissions using ammonia retrievals from the Cross-track Infrared Sounder (CrIS) for use in the Global Environmental Multiscale – Modelling Air quality and Chemistry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14d132c318b0c4e7b1e8acefd6870fee
https://doi.org/10.5194/acp-22-6595-2022
https://doi.org/10.5194/acp-22-6595-2022