Dr Sijme-Jan Paardekooper

Royal Society University Research Fellow and Senior Lecturer
Email: s.j.paardekooper@qmul.ac.ukTelephone: 020 7882 6575Room Number: G. O. Jones Building, Room 503
Profile
I am a Royal Society University Research Fellow and Senior Lecturer at Queen Mary, University of London. I am interested in figuring out how planets form, both in the Solar system and beyond. My research therefore focuses on discs around young stars, which are thought to be the birthplaces of planets. I study the various physical processes involved using state-of-the-art numerical methods.
I completed my PhD at Leiden University, in the Netherlands, in 2006. This was followed by a stint at the Department of Applied Mathematics and Theoretical Physics in Cambridge, first as a research associate, then as an STFC postdoctoral fellow, and finally as a Royal Society URF. I joined Queen Mary in 2013.
Teaching
Extrasolar Planets and Astrophysical Discs (SPA7009)
Over the past 25 years, roughly 3500 (!) planets have been discovered orbiting stars other than our Sun. Planets appear to be almost everywhere we look: from our nearest neighbour star, to stars invisible to the naked eye; orbits range from extremely close ('Hot Jupiters') to extremely wide (~100 Astronomical Units). The most common planet in our galactic neighbourhood may well be a planet that we do not have in the Solar System: a Super-Earth. All these surprising discoveries make us think about how this zoo of extrasolar planets was formed.
Young stars are known to be surrounded by discs of gas and dust. These are thought to be the sites of planet formation. In order to understand the formation of planets, both in the Solar System and beyond, we have to understand the dynamics of astrophysical discs. Such discs play in many astrophysical systems, such as Cataclysmic Variables, Active Galactic Nuclei, around planets (Saturn!). This makes them interesting objects of study in their own right.
Research
Research Interests:
Extrasolar Planets
The population of planets around stars other than our Sun has thrown a lot of surprises at us: Hot Jupiters, Super-Earth, planets in close binaries, circumbinary planets, and many more types of planetary systems very much unlike our own Solar system. My research focuses on trying to understand this zoo of exoplanets by looking at how they formed: in accretion discs around young stars.
Protoplanetary discs
Discs around young stars consist of gas and, initially, tiny dust particles that can be found in the interstellar medium. These tiny dust particles will have to grow 14 orders of magnitude to become Earth-like or even giant planets. I study the important processes for growing planets and shaping planetary systems with the help of computer simulations.
Numerical hydrodynamics
Protoplanetary discs consist, at least initially, for 99% of gas. Computer simulations of protoplanetary discs therefore solve the equations of hydrodynamics. Part of my research is to try and develop new techniques for solving these equations, both on traditional CPUs and graphics cards.
Publications
-
McNally CP, Nelson RP, Paardekooper S-J et al. (2020). Low-mass planet migration in three-dimensional wind-driven inviscid discs: a negative corotation torque. nameOfConference
-
Hallam PD, Paardekooper S-J (2019). Constraining the masses of planets in protoplanetary discs from the presence or absence of vortices - comparison with ALMA observations. nameOfConference
-
Lovascio F, Paardekooper SJ (2019). Dynamics of dusty vortices - I. Extensions and limitations of the terminal velocity approximation. nameOfConference
-
McNally CP, Nelson RP, Paardekooper S-J (2019). Multiplanet systems in inviscid discs can avoid forming resonant chains. nameOfConference
-
MCNALLY CP, NELSON RP, Paardekooper SJ et al. (2019). Migrating super-Earths in low viscosity discs: unveiling the roles of feedback, vortices and laminar accretion flows. nameOfConference
DOI: 10.1093/mnras/stz023
-
Paardekooper SJ, Ogilvie GI (2018). Local numerical simulations of warped discs. nameOfConference
-
Hallam PD, Paardekooper S-J (2018). Investigating the possibility of reversing giant planet migration via gap edge illumination. nameOfConference
-
McNally CP, Nelson RP, Paardekooper SJ et al. (2018). Low mass planet migration in Hall-affected disks. ASTRONUM 2017
-
MCNALLY CP, NELSON RP, Paardekooper S-J (2018). Low mass planet migration in magnetically torqued dead zones - II. Flow-locked and runaway migration, and a torque prescription. nameOfConference
DOI: 10.1093/mnras/sty905
-
Paardekooper SJ, Johansen A (2018). Giant Planet Formation and Migration. nameOfConference
-
Riols A, Latter H, Paardekooper S-J (2017). Gravitoturbulence and the excitation of small-scale parametric instability in astrophysical discs. nameOfConference
-
Paardekooper S (2017). Multidimensional upwind hydrodynamics on unstructured meshes using Graphics Processing Units I. Two-dimensional uniform meshes. nameOfConference
-
Hallam PD, Paardekooper S-J (2017). The role of gap edge instabilities in setting the depth of planet gaps in protoplanetary discs. nameOfConference
-
McNally CP, Nelson RP, Paardekooper SJ et al. (2017). Low mass planet migration in magnetically torqued dead zones – I. Static migration torque. nameOfConference
-
Coleman GAL, Nelson RP, Paardekooper SJ et al. (2017). Exploring plausible formation scenarios for the planet candidate orbiting Proxima Centauri. nameOfConference
DOI: 10.1093/mnras/stx169
-
ANGLADA ESCUDE G, Nelson RP, Coleman G et al. (2016). A terrestrial planet candidate in a temperate orbit around Proxima Centauri. nameOfConference
DOI: 10.1038/nature19106
-
Lines S, Leinhardt ZM, Baruteau C et al. (2016). Modelling circumbinary protoplanetary disks: II. Gas disk feedback on planetesimal dynamical and collisional evolution in the circumbinary systems Kepler-16 and 34. nameOfConference
-
Kraus S, Monnier JD, Ireland MJ et al. (2016). Planet Formation Imager (PFI): Science vision and key requirements. nameOfConference
DOI: 10.1117/12.2231067
QMRO: qmroHref -
Lines S, Leinhardt ZM, Baruteau C et al. (2015). Modelling circumbinary protoplanetary disks: I. Fluid simulations of the Kepler-16 and 34 systems. nameOfConference
-
Ivanov PB, Papaloizou JCB, Paardekooper SJ et al. (2015). The evolution of a binary in a retrograde circular orbit embedded in an accretion disk. nameOfConference
QMRO: qmroHref -
Juhász A, Benisty M, Pohl A et al. (2015). Spiral arms in scattered light images of protoplanetary discs: Are they the signposts of planets?. nameOfConference
QMRO: qmroHref -
Baruteau C, Crida A, PAARDEKOOPER S et al. (2014). Planet-Disk Interactions and Early Evolution of Planetary Systems. nameOfConference
QMRO: qmroHref -
Paardekooper S-J (2014). Dynamical corotation torques on low-mass planets. nameOfConference
QMRO: qmroHref -
Rice WKM, Paardekooper SJ, Forgan DH et al. (2014). Convergence of simulations of self-gravitating accretion discs - II. Sensitivity to the implementation of radiative cooling and artificial viscosity. nameOfConference
QMRO: qmroHref -
Lines S, Leinhardt ZM, Paardekooper S et al. (2014). Forming circumbinary planets: N-body simulations of kepler-34. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Rein H, Kley W (2013). The formation of systems with closely spaced low-mass planets and the application to Kepler-36. nameOfConference
QMRO: qmroHref -
Mulders GD, Paardekooper SJ, Pani¿ O et al. (2013). Planet or brown dwarf? Inferring the companion mass in HD 100546 from the wall shape using mid-infrared interferometry. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Lesur G, Papaloizou JCB (2013). Vortex migration in protoplanetary discs. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Leinhardt ZM, Thébault P et al. (2012). How not to build tatooine: The difficulty of in situ formation of circumbinary planets Kepler 16b, Kepler 34b, and Kepler 35b. nameOfConference
QMRO: qmroHref -
Paardekooper SJ (2012). Numerical convergence in self-gravitating shearing sheet simulations and the stochastic nature of disc fragmentation. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Baruteau C, Meru F (2011). Numerical convergence in self-gravitating disc simulations: Initial conditions and edge effects. nameOfConference
QMRO: qmroHref -
Baruteau C, Meru F, Paardekooper SJ (2011). Rapid inward migration of planets formed by gravitational instability. nameOfConference
QMRO: qmroHref -
Nelson RP, Paardekooper SJ (2011). Numerical Simulations of Disc-Planet Interactions. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Baruteau C, Kley W (2011). A torque formula for non-isothermal Type I planetary migration-II. Effects of diffusion. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Lesur G, Papaloizou JCB (2010). Vortex migration in protoplanetary disks. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Leinhardt ZM (2010). Planetesimal collisions in binary systems. nameOfConference
QMRO: qmroHref -
Paardekooper S-J, Baruteau C, Crida A et al. (2010). A torque formula for non-isothermal type i planetary migration - I. Unsaturated horseshoe drag. nameOfConference
QMRO: qmroHref -
Lyra W, Paardekooper SJ, Mac Low MM (2010). Orbital migration of low-mass planets in evolutionary radiative models: Avoiding catastrophic infall. nameOfConference
QMRO: qmroHref -
Paardekooper SJ (2009). Disc-planet interactions in subkeplerian discs. nameOfConference
QMRO: qmroHref -
Paardekooper S-J, Papaloizou JCB (2009). On the width and shape of the corotation region for low-mass planets. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Papaloizou JCB (2009). On the width and shape of the corotation region for low-mass planets. nameOfConference
QMRO: qmroHref -
Paardekooper S-J, Papaloizou JCB (2009). On corotation torques, horseshoe drag and the possibility of sustained stalled or outward protoplanetary migration. nameOfConference
QMRO: qmroHref -
Paardekooper S-J, Papaloizou JCB (2008). On disc protoplanet interactions in a non-barotropic disc with thermal diffusion. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Mellema G (2008). Growing and moving low-mass planets in non-isothermal disks. nameOfConference
QMRO: qmroHref -
Paardekooper S-J, Thébault P, Mellema G (2008). Planetesimal and gas dynamics in binaries. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Mellema G (2006). Halting type i planet migration in non-isothermal disks. nameOfConference
QMRO: qmroHref -
de Val-Borro M, Edgar RG, Artymowicz P et al. (2006). A comparative study of disc-planet interaction. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Mellema G (2006). Dust flow in gas disks in the presence of embedded planets. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Mellema G (2006). RODEO: A new method for planet-disk interaction. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Mellema G (2004). Planets opening dust gaps in gas disks. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Van Der Hucht KA, Van Genderen AM et al. (2003). New type of brightness variations of the colliding wind WO4 + O5((f)) binary WR 30a. nameOfConference
QMRO: qmroHref -
Paardekooper SJ, Veen PM, Van Genderen AM et al. (2002). On the variability of the visual binary WR 86 WC7 with a β-Cephei companion. nameOfConference
QMRO: qmroHref
Supervision
This is not an exhaustive list and I would be happy to discuss other project possibilities.