Massive black hole binary mergers within sub-pc scale gas discs (2008)
Cuadra, J., Armitage, P. J., Alexander, R. D., Begelman, M. C.
[ABRIDGED] We study supermassive black hole binary mergers driven by angular momentum loss to small-scale gas discs. Such binaries form after major galaxy mergers, but their fate is unclear since...
Binary formation and mass function variations in fragmenting discs with short cooling times (2008)
Alexander, R. D., Armitage, P. J., Cuadra, J.
Accretion discs at sub-pc distances around supermassive black holes are likely to cool rapidly enough that self-gravity results in fragmentation. Here, we use high-resolution hydrodynamic simulations...
Self-gravitating fragmentation of eccentric accretion disks (2007)
Alexander, R. D., Armitage, P. J., Cuadra, J., Begelman, M. C.
We consider the effects of eccentricity on the fragmentation of gravitationally unstable accretion disks, using numerical hydrodynamics. We find that eccentricity does not affect the overall...
Accretion of stellar winds in the galactic centre (2006)
V. Springel, J. Cuadra, S. Nayakshin, T. Di Matteo
Accretion of stellar winds in the galactic centre
Paumard, T., Genzel, R., Martins, F., Nayakshin, S., Beloborodov, A. M., Levin, Y., ...
We report the definite spectroscopic identification of 41 OB supergiants, giants and main sequence stars in the central parsec of the Galaxy. Detection of their absorption lines have become possible...
Accretion of stellar winds in the galactic centre (2006)
Cuadra, J., Matteo, T. Di, Nayakshin, S., Springel, V.
Sgr A* está identificado como el hoyo negro súper masivo MBH 3:5 106 M en el centro de la Galaxia (SMBH). Por su proximidad, Sgr A* puede jugar un papel clave en la comprensión de los núcleos...
Galois Corings and a Jacobson-Bourbaki type Correspondence (2005)
Cuadra, J., Gomez-Torrecillas, J.
The Jacobson-Bourbaki Theorem for division rings was formulated in terms of corings by Sweedler in 1975. Finiteness conditions hypotheses are not required in this new approach. In this paper we...
Galactic Centre stellar winds and Sgr A* accretion (2005)
Cuadra, J., Nayakshin, S., Springel, V., Di Matteo, T.
(ABRIDGED) We present in detail our new 3D numerical models for the accretion of stellar winds on to Sgr A*. In our most sophisticated models, we put stars on realistic orbits around Sgr A*, include...
Accretion of cool stellar winds on Sgr A*: another puzzle of the Galactic Centre? (2005)
Cuadra, J., Nayakshin, S., Springel, V., Di Matteo, T.
Sgr A* is currently being fed by winds from a cluster of gravitationally bound young mass-loosing stars. Using observational constraints on the orbits, mass loss rates and wind velocities of these...
Cocycle twisting of E(n)-module algebras and applications to the Brauer group (2004)
We classify the orbits of coquasi-triangular structures for the Hopf algebra E(n) under the action of lazy cocycles and the Hopf automorphism group. This is applied to detect subgroups of the Brauer...
Optical and infrared photometry of the unusual Type Ia supernova 2000cx (2003)
Candia, P., Krisciunas, K., Suntzeff, N. B., Gonzalez, D., Espinoza, J., Leiton, R., ...
We present optical and infrared photometry of the unusual Type Ia supernova 2000cx. With the data of Li et al. and Jha, this constitutes the largest data set ever assembled for a Type Ia SN, more...
Bright stars and an optically thick inactive disk in Sgr A * and other dormant galaxy centers (2003)
Extensions of rational modules (2003)
For a coalgebra C, the rational functor Rat (−):ℳC∗→ℳC∗ is a left exact preradical whose associated linear...
Extensions of rational modules (2003)
For a coalgebra C, the rational functor Rat (−):ℳC∗→ℳC∗ is a left exact preradical whose associated linear topology is the family ℱC, consisting of all closed and cofinite right...
Optical and Infrared Photometry of the Unusual Type Ia Supernova 2000cx (2002)
Candia, P., Krisciunas, K., Suntzeff, Nicholas B., Gonzalez, D., Espinoza, J., Leiton, R., ...
We present optical and infrared photometry of the unusual Type Ia supernova 2000cx. With the data of Li et al. (2001) and Jha (2002), this comprises the largest dataset ever assembled for a Type Ia...