Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Clayton Heller"'
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 2, p L36 (2024)
Using numerical simulations of a barred disk galaxy embedded in nonspinning and spinning dark matter (DM) halos, we present a novel mechanism of “cooling” the vertical oscillations of DM particles, which acquire disk kinematics. The underlying me
Externí odkaz:
https://doaj.org/article/35eeb2e073ff47ed8b0b9d428bd3d95e
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 520:1243-1257
The buckling process in stellar bars is full of unsolved issues. We analyze the origin of the buckling instability in stellar bars using high-resolution N-body simulations. Previous studies have promoted the nonresonant firehose instability to be res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a50a039b7a6d562a7104c08f649664c
https://doi.org/10.1093/mnras/stad076
https://doi.org/10.1093/mnras/stad076
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 488:5788-5801
We study nonlinear response of spinning dark matter (DM) halos to dynamic and secular evolution of stellar bars in the embedded galactic disks, using high-resolution numerical simulations. For a sequence of halos with the cosmological spin parameter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4f01e7b3e9e96a2e03dba4e7ac14e78
https://doi.org/10.1093/mnras/stz2144
https://doi.org/10.1093/mnras/stz2144
Autor:
Mark Edwards, Daniel Fogarty, Olatunde Oladehin, Benjamin Eller, Clayton Heller, Charles W. Clark
Publikováno v:
Physical Review A. 102
We present a study of how macroscopic flow can be produced in Bose-Einstein condensates confined in a ``racetrack'' potential by stirring with a wide rectangular barrier. This potential consists of two half-circle channels separated by straight chann
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bab4a21287b2833c22c70f206a107e4
https://doi.org/10.1103/physreva.102.063324
https://doi.org/10.1103/physreva.102.063324
Disk galaxies can exchange angular momentum and baryons with their host dark matter (DM) halos. These halos possess internal spin, `lambda', which is insignificant rotationally but does affect interactions between the baryonic and DM components. Whil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0ed6f89aed0d651172a4c235c386994
http://arxiv.org/abs/1909.02570
http://arxiv.org/abs/1909.02570
We model and analyse the secular evolution of stellar bars in spinning dark matter (DM) haloes with the cosmological spin lambda ~ 0 -- 0.09. Using high-resolution stellar and DM numerical simulations, we focus on angular momentum exchange between st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb691fdc727a81a24e61964ebc5f2449
Publikováno v:
The Astrophysical Journal. 687:L13-L16
We study formation and evolution of bar-disk systems in fully self-consistent cosmological simulations of galaxy formation in the LCDM WMAP3 Universe. In a representative model we find that the first generation of bars form in response to the asymmet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43149211fced099a4bc90e7e2329e1df
https://doi.org/10.1086/593168
https://doi.org/10.1086/593168
Publikováno v:
The Astrophysical Journal. 671:226-242
We investigate the formation and evolution of galactic disks immersed in assembling live DM halos. Disk/halo components have been evolved from the cosmological initial conditions and represent the collapse of an isolated density perturbation. The bar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22df1dc60789ab9d396b02be3939d348
https://doi.org/10.1086/523260
https://doi.org/10.1086/523260
Publikováno v:
The Astrophysical Journal. 666:189-200
We analyze evolution of live disk-halo systems in the presence of various gas fractions, f_gas less than 8% in the disk. We addressed the issue of angular momentum (J) transfer from the gas to the bar and its effect on the bar evolution. We find that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abd736f48bc460ef94139dab636ad69b
https://doi.org/10.1086/520531
https://doi.org/10.1086/520531
Publikováno v:
The Astrophysical Journal. 657:L65-L68
We investigate the formation and evolution of nested bar systems in disk galaxies in a cosmological setting by following the development of an isolated dark matter (DM) and baryon density perturbation. The disks form within the assembling triaxial DM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::618685a967becb0cbb35d7d527aeffdc
https://doi.org/10.1086/513104
https://doi.org/10.1086/513104