Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Edmonds, Doug"'
Modified dark matter (MDM, formerly known as MoNDian dark matter) is a phenomenological model of dark matter, inspired by quantum gravity. We review the construction of MDM by generalizing entropic gravity to de-Sitter space as is appropriate for an
Externí odkaz:
http://arxiv.org/abs/1602.00055
We discuss the possibility that the cold dark matter mass profiles contain information on the cosmological constant, and that such information constrains the nature of cold dark matter (CDM). We call this approach Modified Dark Matter (MDM). In parti
Externí odkaz:
http://arxiv.org/abs/1601.00662
MONDian dark matter (MDM) is a new form of dark matter quantum that naturally accounts for Milgrom's scaling, usually associated with modified Newtonian dynamics (MOND), and theoretically behaves like cold dark matter (CDM) at cluster and cosmic scal
Externí odkaz:
http://arxiv.org/abs/1308.3252
Spectroscopic observations of quasar outflows at rest-frame 500-1000 Angstrom have immense diagnostic power. We present analyses of such data, where absorption troughs from three important ions are measured: first, O IV and O IV* that allow us to obt
Externí odkaz:
http://arxiv.org/abs/1305.2181
We present the most energetic BALQSO outflow measured to date, with a kinetic luminosity of at least 10^46 ergs/s, which is 5% of the bolometric luminosity of this high Eddington ratio quasar. The associated mass flow rate is 400 solar masses per yea
Externí odkaz:
http://arxiv.org/abs/1211.6250
We present spectroscopic analysis of the broad absorption line outflow in quasar SDSS J1512+1119. In particular, we focus our attention on a kinematic component in which we identify PV and SIV/SIV* absorption troughs. The shape of the unblended phosp
Externí odkaz:
http://arxiv.org/abs/1208.5910
Autor:
Dunn, Jay P., Arav, Nahum, Aoki, Kentaro, Wilkins, Ashlee, Laughlin, Courtney, Edmonds, Doug, Bautista, Manuel
Publikováno v:
2012 ApJ, 750, 143
We present a study of Broad Absorption Line (BAL) quasar outflows that show S IV ?1063 and S IV* ?1073 troughs. The fractional abundance of S IV and C IV peak at similar value of the ionization parameter, implying that they arise from the same physic
Externí odkaz:
http://arxiv.org/abs/1206.7026
We present analysis of the UV-spectrum of the low-z AGN IRAS-F22456-5125 obtained with the Cosmic Origins Spectrograph on board the Hubble Space Telescope. The spectrum reveals six main kinematic components, spanning a range of velocities of up to 80
Externí odkaz:
http://arxiv.org/abs/1205.0189
Autor:
Edmonds, Doug, Borguet, Benoit, Arav, Nahum, Dunn, Jay P., Penton, Steve, Kriss, Gerard A., Korista, Kirk, Costantini, Elisa, Steenbrugge, Katrien, Gonzalez-Serrano, J. Ignacio, Aoki, Kentaro, Bautista, Manuel, Behar, Ehud, Benn, Chris, Crenshaw, D. Micheal, Everett, John, Gabel, Jack, Kaastra, Jelle, Moe, Maxwell, Scott, Jennifer
We present absorption line analysis of the outflow in the quasar IRAS F04250-5718. Far-ultraviolet data from the Cosmic Origins Spectrograph onboard the Hubble Space Telescope reveal intrinsic narrow absorption lines from high ionization ions (e.g.,
Externí odkaz:
http://arxiv.org/abs/1106.2084
Autor:
Aoki, Kentaro, Oyabu, Shinki, Dunn, Jay P., Arav, Nahum, Edmonds, Doug, Korista, Kirk T., Matsuhara, Hideo, Toba, Yoshiki
We present Subaru observations of the newly discovered luminous quasar AKARI J1757+5907, which shows an absorption outflow in its spectrum. The absorption consists of 9 distinct troughs, and our analysis focuses on the troughs at ~ -1000$ km s^{-1} f
Externí odkaz:
http://arxiv.org/abs/1101.4340