Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Wold, Margrethe"'
Publikováno v:
A&A 671, A38 (2023)
Simulations of asteroid binaries commonly use mutual gravitational potentials approximated by series expansions, leading to truncation errors, and also preventing correct computations of the forces and torques when the bodies are close. We make of a
Externí odkaz:
http://arxiv.org/abs/2301.10083
Publikováno v:
A&A 665, A43 (2022)
Asteroid binaries found amongst the Near-Earth objects are believed to have formed from rotational fission. In this paper, we aim to study the dynamical evolution of asteroid systems the moment after fission. The initial condition is modelled as a co
Externí odkaz:
http://arxiv.org/abs/2206.11570
A new technique that utilizes surface integrals to find the force, torque and potential energy between two non-spherical, rigid bodies is presented. The method is relatively fast, and allows us to solve the full rigid two-body problem for pairs of sp
Externí odkaz:
http://arxiv.org/abs/2107.03274
Autor:
Canalizo, Gabriela, Wold, Margrethe, Hiner, Kyle D., Lazarova, Mariana, Lacy, Mark, Aylor, Kevin
We describe a method to measure the M-sigma relation in the non-local universe using dust-obscured QSOs. We present results from a pilot sample of nine 2MASS red QSOs with redshifts 0.14
Externí odkaz:
http://arxiv.org/abs/1210.1894
Autor:
Hiner, Kyle D., Canalizo, Gabriela, Wold, Margrethe, Brotherton, Michael S., Cales, Sabrina L.
The MBH - {\sigma}\ast relation has been studied extensively for local galaxies, but to date there have been scarce few direct measurements of stellar velocity dispersions for systems beyond the local universe. We investigate black hole and host gala
Externí odkaz:
http://arxiv.org/abs/1207.4456
Much progress has been made in measuring black hole (BH) masses in (non-active) galactic nuclei using the tight correlation between stellar velocity dispersions (sigma) in galaxies and the mass of their central BH. The use of this correlation in quas
Externí odkaz:
http://arxiv.org/abs/0807.2433
Autor:
Mueller, Andreas, Wold, Margrethe
Publikováno v:
Astron.Astrophys. 457 (2006) 485-492
Aims. We quantify the effect of gravitational redshift on emission lines to explore the transition region from the Newtonian to the Einsteinian regime. With the emitting region closer to the Kerr black hole, lines are successively subjected to a stro
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607050
Autor:
McLure, Ross J., Willott, Chris J., Jarvis, Matt J., Rawlings, Steve, Hill, Gary J., Mitchell, Ewan, Dunlop, James S., Wold, Margrethe
Publikováno v:
Mon.Not.Roy.Astron.Soc. 351 (2004) 347
The results of analysis of HST I-band imaging of a sample of 41 radio galaxies spanning three orders of magnitude in radio luminosity at redshift z~0.5 are presented. The full sample is drawn from four complete, low-frequency selected radio samples w
Externí odkaz:
http://arxiv.org/abs/astro-ph/0403106
We present an optically-based study of the alignment between the radio axes and the optical major axes of eight z~0.7 radio galaxies in a 7C sample. The radio galaxies in this sample are ~20-times less radio luminous than 3C galaxies at the same reds
Externí odkaz:
http://arxiv.org/abs/astro-ph/9903314