Latest news:

Feb 20, 2013

Will there ever be time to work again?

Jun 20, 2011

Too... much ... work

Aug 19, 2009

Too...hot... to... work...

Feb 24, 2009

Isn't Icarus a pessimistic name for a research journal?

Nov 24, 2008

Big sigh... another day, another WKBJ

Oct 14, 2008

I hate competition

Feb 4, 2008

Zeus3D has shattered my chariot with a thunderbolt

Dec 18, 2006

Jesus, that was fun.

Nov 2, 2006

It's in. Come what may...

Aug 7, 2006

The Trinity JRF application has rammed the joy out of my life

Apr 13, 2006

The Piece of Rank Arrant S*@$ is ready for resubmission

Mar8, 2006

I struggle with this eigenvalue problem...

Latest update
Nov 24, 2008

Astrophysical disks

My research interests concern flat spinning things in space, in other words astrophysical disks. I fell into this area as a student for no other reason than they were especially pretty. But they are also ubiquitous, owing to the universality of gravitational attraction and the conservation of angular momentum. And they are extremely important, because they regulate star, planet, and satellite formation, in addition to the growth of supermassive black holes. Though astrophysical disks can vary by ten orders of magnitude in size and differ hugely in composition, all share the same basic dynamics and many physical phenomena. Thanks to this, theoreticians, like me, can jump from one class of disk to another, which stops us getting bored.

Some of the disks I enjoy working on are: (a) Saturn's rings, which are about 100,000 km in radius and composed of icy boulders, (b) dwarf novae and X-ray binaries, which consist of disks encircling white dwarfs, neutron stars, and stellar mass black holes, some 500,000 km in radius and composed of ionised gas up to 10 million degrees, (c) protoplanetary disks, nebulae of dust and gas 10 billion km in radius, from which young stars condense out of galactic gas and in which planets ultimately form, and (d) active galactic nucleii, which contain a supermassive black hole (up to a billion times the mass of the sun) and a disk of hot gas that feeds it. For a (planetary ring oriented) review, you might have a read of this book chapter.

My primary interest is in the fluid dynamics of these objects, with a focus on instabilities, waves, and turbulence. I use a combination of analytic and semi-analytic techniques, supplemented with carefully directed, large-scale numerical simulations. If you follow the links below, you will find information on some of the specific research directions I am pursuing at the moment. Potential PhD students will also find some possible research topics.

Current research topics

*the magnetorotational instability

*Spiral waves and gravitoturbulence

*Hydrodynamical instabilities in protoplanetary disks

*Global oscillations around black holes and neutron stars

*Vortices, dust, and planet formation

*Patterns, structure, and long term evolution of Saturn's rings

Students

Loren Held (PhD, 2016-)
Janosz Dewberry (PhD, 2015-)
Johnathan Ross (PhD, 2013-2017)
Roxanna Rosca (Intern, 2015)
Claire Guepin (Intern, 2014)
Marie Chupeau (MSc, 2011)

Publications

47. H. N. Latter, J. Papaloizou, 2017. Vortices and the saturation of the vertical shear instability in protoplanetary disks. MNRAS, accepted.
46. A. Riols, H. N. Latter, 2017. Magnetorotational instability and dynamo action in gravitoturbulent astrophysical discs. MNRAS, accepted.
45. H. N. Latter, G. I. Ogilvie, H. Rein, 2017. Planetary rings and other astrophysical disks. To appear in: Tiscareno, Murray (Eds), Planetary Ring Systems , CUP, Cambridge.
44. P. Estrada, R. Durisen, H. Latter, 2017. Meteoroid Bombardment and Ballistic Transport in Planetary Ring Systems. To appear in: Tiscareno, Murray (Eds), Planetary Ring Systems , CUP, Cambridge.
43. H. N. Latter, J. C. B. Papaloizou, 2017. Local models of astrophysical discs. MNRAS, 472, 1432.
42. A. Riols, H. N. Latter, S. J. Paardekooper, 2017. Gravito-turbulence and the excitation of small-scale parametric instability in astrophysical discs. MNRAS, 471, 317.
41. J. Ross, H. N. Latter, 2017. Turbulent fluctuations and the excitation of Z Cam outbursts. MNRAS, 470, 34.
40. J. Ross, H. N. Latter, M. Tehranchi, 2017. MRI turbulence and thermal instability in accretion disks. MNRAS, 468, 2401.
39. H. N. Latter, R. Rosca, 2017. On dust-gas gravitational instabilities in protoplanetary discs. MNRAS, 464, 1923.

38. A. Riols, G. I. Ogilvie, H. Latter, J. P. Ross, 2016. Magnetorotationally driven wind cycles in local disc models. MNRAS, 463, 3096.
37. G. Lesur, H. Latter, 2016. On the survival of zombie vortices in protoplanetary discs. MNRAS letters, 462, 4549.
36. Q. Kral, H. Latter, 2016. The magnetorotational instability in debris-disc gas. MNRAS, 461, 1614.
35. A. Riols, H. Latter, 2016. Gravitoturbulence in magnetised protostellar discs. MNRAS, 460, 2223.
34. H. N. Latter, 2016. On the convective overstability in protoplanetary discs. MNRAS, 455, 2608.
33. J. Ross, H. N. Latter, J. Guilet, 2016. The stress-pressure relationship in simulations of MRI-induced turbulence. MNRAS, 455, 526.

32. H. N. Latter, S. Fromang, J. Faure, 2015. Local and global aspects of the linear MRI in accretion disks. MNRAS, 453, 3257.
31. A. J. Barker, H. N. Latter, 2015. On the vertical-shear instability in astrophysical discs. MNRAS, 450, 21.
30. J. Faure, S. Fromang, H. Latter, H. Meheut, 2015. Vortex cycles at the inner edges of dead zones in protoplanetary disks. A & A, 573, 132.

29. H. N. Latter, G. I. Ogilvie, M. Chupeau, 2014. The ballistic transport instability in Saturn's rings III: numerical simulations. MNRAS, 441, 2773.
28. H. N. Latter, G. I. Ogilvie, M. Chupeau, 2014. The ballistic transport instability in Saturn's rings II: nonlinear wave dynamics. MNRAS, 441, 2760.
27. J. Faure, S. Fromang, H. Latter, 2014. Thermodynamics of the dead-zone inner edge in protoplanetary disks. A & A, 564, 15.

26. G. I. Ogilvie, H. N. Latter, 2013. Hydrodynamical instability in warped astrophysical discs. MNRAS, 433, 2420.
25. G. I. Ogilvie, H. N. Latter, 2013. Local and global dynamics of warped astrophysical discs. MNRAS, 433, 2403.
24. S. Fromang, H. Latter, G. Lesur, G. Ogilvie, 2013. Local outflows from turbulent accretion disks. A & A, 552, 71.
23. H. Rein, H. N. Latter, 2013. Large-scale N-body simulations of the viscous overstability in Saturn's rings. MNRAS, 431, 145.

22. H. N. Latter, G. I. Ogilvie, M. Chupeau, 2012. The ballistic transport instability in Saturn's rings I: formalism and linear theory. MNRAS, 427, 2336.
21. H. N. Latter, J. C. B. Papaloizou, 2012. Hysteresis and thermal limit cycles in MRI simulations of accretion discs. MNRAS, 426, 1107.
20. H. N. Latter, S. A. Balbus, 2012. The dynamics of inner dead-zone boundaries in protoplanetary disks. MNRAS, 424, 1977.
19. Z. M. Leinhardt, G. I. Ogilvie, H. N. Latter, E. Kokubo, 2012. Tidal disruption of satellites and formation of narrow rings. MNRAS, 424, 1419.
18. H. N. Latter, H. Rein, G. I. Ogilvie, 2012. The gravitational instability of a stream of co-orbital particles. MNRAS, 423, 1267.
17. H. N. Latter, M. W. Kunz, 2012. The HBI in a quasi-global model of the intracluster medium. MNRAS, 423, 1964.
16. S. A. Balbus, H. N. Latter, N. O. Weiss, 2012. Global model of differential rotation in the Sun. MNRAS, 420, 2457.

15. E. Jacquet, S. A. Balbus, H. N. Latter, 2011. On linear dust-gas streaming instabilities in protoplanetary discs. MNRAS, 415, 3591.

14. H. N. Latter & G. I. Ogilvie, 2010. Hydrodynamical simulations of viscous overstability in Saturn's rings. Icarus, 210, 318.
13. S. A. Balbus & H. N. Latter, 2010. The tachocline and differential rotation in the Sun. MNRAS, 407, 2565.
12. H. N. Latter, S. Fromang, O. Gressel, 2010. MRI channels flows in vertically-stratified models of accretion disks. MNRAS, 406, 848.
11. H. Latter & D. J. Ivers, 2010. Spherical single-roll dynamos at large magnetic Reynolds numbers. Physics of Fluids, 22, 066601.
10. H. N. Latter, J. F. Bonart, S. A. Balbus, 2010. Resistive double-diffusive instability in the dead-zones of protostellar disks. MNRAS, 405, 1831.

9. S. A. Balbus, J. Bonart, H. Latter, N. Weiss, 2009. On differential rotation and convection in the Sun. MNRAS, 400, 176.
8. H. N. Latter & S. A. Balbus, 2009. Inertial waves near corotation in 3D hydrodynamical disks. MNRAS, 399, 1058.
7. H. N. Latter & G. I. Ogilvie, 2009. The viscous overstability, nonlinear wavetrains, and fine-scale structure in dense planetary rings. Icarus, 202, 565.
6. P. Lesaffre, S. Balbus & H. N. Latter, 2009. A comparison of local simulations and reduced models of MRI-induced turbulence. MNRAS, 396, 779.
5. H. N. Latter, P. Lesaffre & S. A. Balbus, 2009. MRI channel flows and their parasites. MNRAS, 394, 715.

4. H. N. Latter & G. I. Ogilvie, 2008. Dense planetary rings and the viscous overstability. Icarus, 195, 725.
3. H. N. Latter & G. I. Ogilvie, 2006. Viscous overstability and eccentricity evolution in three-dimensional gaseous disks. MNRAS, 372, 1829.
2. H. N. Latter & G. I. Ogilvie, 2006. The linear stability of dilute particulate rings. Icarus, 184, 498.
1. H. Latter & D. Ivers, 2004. Kinematic roll dynamo computations at large magnetic Reynolds numbers. ANZIAM J., 45(E), C905.


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