749 citations · 984 across the 8 of their papers we have counts for
8 papers
A family of potential-density pairs for galactic bars
Walter Dehnen, Hossam Aly
We present a family of analytical potential-density pairs for barred discs, which can be combined to describe galactic bars in a realistic way, including boxy/peanut components. We…
Dust Traffic Jams in Inclined Circumbinary Protoplanetary Discs I. Morphology and Formation Theory
Hossam Aly, Jean-François Gonzalez, Rebecca Nealon +3
Gas and dust in inclined orbits around binaries experience precession induced by the binary gravitational torque. The difference in precession between gas and dust alters the radia…
Dynamical dust traps in misaligned circumbinary discs: analytical theory and numerical simulations
Cristiano Longarini, Giuseppe Lodato, Claudia Toci +1
Recent observations have shown that circumbinary discs can be misaligned with respect to the binary orbital plane.The lack of spherical symmetry, together with the non-planar geome…
Is the gap in the DS Tau disc hiding a planet?
Benedetta Veronesi, Enrico Ragusa, Giuseppe Lodato +6
Recent mm-wavelength surveys performed with the Atacama Large Millimeter Array (ALMA) have revealed protoplanetary discs characterized by rings and gaps. A possible explanation for…
Efficient Dust Ring Formation in Misaligned Circumbinary Discs
Hossam Aly, Giuseppe Lodato
Binary systems exert a gravitational torque on misaligned discs orbiting them, causing differential precession which may produce disc warping and tearing. While this is well unders…
On The Secular Evolution of GG Tau A Circumbinary Disc: A Msialigned Disc Scenario
Hossam Aly, Giuseppe Lodato, Paolo Cazzoletti
The binary system GG Tau A is observed to have a circumbinary disc with a dust ring located further out than expected, assuming a co-planar disc and a corresponding semi-major axis…
Misaligned gas discs around eccentric black-hole binaries and implications for the final-parsec problem
Hossam Aly, Walter Dehnen, Chris Nixon +1
We investigate the evolution of low mass (Md /Mb = 0.005) misaligned gaseous discs around eccentric supermassive black hole (SMBH) binaries. These are expected to form from randoml…
Improving convergence in smoothed particle hydrodynamics simulations without pairing instability
Walter Dehnen, Hossam Aly
The numerical convergence of smoothed particle hydrodynamics (SPH) can be severely restricted by random force errors induced by particle disorder, especially in shear flows, which…