Dr Sijme-Jan Paardekooper

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

  
  

  DOI: 10.1093/mnras/staa576

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/63423
• 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

  
  

  DOI: 10.1093/mnras/stz3437

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/64091
• Lovascio F, Paardekooper SJ (2019). Dynamics of dusty vortices - I. Extensions and limitations of the terminal velocity approximation. nameOfConference

  
  

  DOI: 10.1093/mnras/stz2035

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/64090
• McNally CP, Nelson RP, Paardekooper S-J (2019). Multiplanet systems in inviscid discs can avoid forming resonant chains. nameOfConference

  
  

  DOI: 10.1093/mnrasl/slz118

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/60089
• 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

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/54806
• Paardekooper SJ, Ogilvie GI (2018). Local numerical simulations of warped discs. nameOfConference

  
  

  DOI: 10.1093/mnras/sty3349

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/58439
• Hallam PD, Paardekooper S-J (2018). Investigating the possibility of reversing giant planet migration via gap edge illumination. nameOfConference

  
  

  DOI: 10.1093/mnras/sty2336

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/54686
• McNally CP, Nelson RP, Paardekooper SJ et al. (2018). Low mass planet migration in Hall-affected disks. ASTRONUM 2017

  
  

  DOI: 10.1088/1742-6596/1031/1/012007

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/41924
• 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

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/36865
• Paardekooper SJ, Johansen A (2018). Giant Planet Formation and Migration. nameOfConference

  
  

  DOI: 10.1007/s11214-018-0472-y

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/32803
• Riols A, Latter H, Paardekooper S-J (2017). Gravitoturbulence and the excitation of small-scale parametric instability in astrophysical discs. nameOfConference

  
  

  DOI: 10.1093/mnras/stx1548

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/25889
• Paardekooper S (2017). Multidimensional upwind hydrodynamics on unstructured meshes using Graphics Processing Units I. Two-dimensional uniform meshes. nameOfConference

  
  

  DOI: 10.1093/mnras/stx1083

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/22824
• Hallam PD, Paardekooper S-J (2017). The role of gap edge instabilities in setting the depth of planet gaps in protoplanetary discs. nameOfConference

  
  

  DOI: 10.1093/mnras/stx1073

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/25890
• McNally CP, Nelson RP, Paardekooper SJ et al. (2017). Low mass planet migration in magnetically torqued dead zones – I. Static migration torque. nameOfConference

  
  

  DOI: 10.1093/mnras/stx2136

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/27723
• 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

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/19729
• 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

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/15552
• 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

  
  

  DOI: 10.1051/0004-6361/201628349

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/17809
• 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

  
  

  DOI: 10.1051/0004-6361/201526295

  
  

  QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/12010
• 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

  
  

  DOI: 10.1051/0004-6361/201424359

  
  

  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

  
  

  DOI: 10.1093/mnras/stv1045

  
  

  QMRO: qmroHref
• Ivanov PB, Papaloizou JCB, Paardekooper S-J et al. (2015). THE EVOLUTION OF A SUPERMASSIVE RETROGRADE BINARY EMBEDDED IN AN ACCRETION DISK. nameOfConference

  
  

  DOI: doi

  
  

  QMRO: qmroHref
• Baruteau C, Crida A, PAARDEKOOPER S et al. (2014). Planet-Disk Interactions and Early Evolution of Planetary Systems. nameOfConference

  
  

  DOI: 10.2458/azu_uapress_9780816531240-ch029

  
  

  QMRO: qmroHref
• Paardekooper S-J (2014). Dynamical corotation torques on low-mass planets. nameOfConference

  
  

  DOI: 10.1093/mnras/stu1542

  
  

  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

  
  

  DOI: 10.1093/mnras/stt2297

  
  

  QMRO: qmroHref
• Lines S, Leinhardt ZM, Paardekooper S et al. (2014). Forming circumbinary planets: N-body simulations of kepler-34. nameOfConference

  
  

  DOI: 10.1088/2041-8205/782/1/L11

  
  

  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

  
  

  DOI: 10.1093/mnras/stt1224

  
  

  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

  
  

  DOI: 10.1051/0004-6361/201220930

  
  

  QMRO: qmroHref
• Paardekooper SJ, Lesur G, Papaloizou JCB (2013). Vortex migration in protoplanetary discs. nameOfConference

  
  

  DOI: 10.1051/epjconf/20134605001

  
  

  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

  
  

  DOI: 10.1088/2041-8205/754/1/L16

  
  

  QMRO: qmroHref
• Paardekooper SJ (2012). Numerical convergence in self-gravitating shearing sheet simulations and the stochastic nature of disc fragmentation. nameOfConference

  
  

  DOI: 10.1111/j.1365-2966.2012.20553.x

  
  

  QMRO: qmroHref
• Paardekooper SJ, Baruteau C, Meru F (2011). Numerical convergence in self-gravitating disc simulations: Initial conditions and edge effects. nameOfConference

  
  

  DOI: 10.1111/j.1745-3933.2011.01099.x

  
  

  QMRO: qmroHref
• Baruteau C, Meru F, Paardekooper SJ (2011). Rapid inward migration of planets formed by gravitational instability. nameOfConference

  
  

  DOI: 10.1111/j.1365-2966.2011.19172.x

  
  

  QMRO: qmroHref
• Nelson RP, Paardekooper SJ (2011). Numerical Simulations of Disc-Planet Interactions. nameOfConference

  
  

  DOI: 10.1166/asl.2011.1213

  
  

  QMRO: qmroHref
• Paardekooper SJ, Baruteau C, Kley W (2011). A torque formula for non-isothermal Type I planetary migration-II. Effects of diffusion. nameOfConference

  
  

  DOI: 10.1111/j.1365-2966.2010.17442.x

  
  

  QMRO: qmroHref
• Paardekooper SJ, Lesur G, Papaloizou JCB (2010). Vortex migration in protoplanetary disks. nameOfConference

  
  

  DOI: 10.1088/0004-637X/725/1/146

  
  

  QMRO: qmroHref
• Paardekooper SJ, Leinhardt ZM (2010). Planetesimal collisions in binary systems. nameOfConference

  
  

  DOI: 10.1111/j.1745-3933.2010.00816.x

  
  

  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

  
  

  DOI: 10.1111/j.1365-2966.2009.15782.x

  
  

  QMRO: qmroHref
• Lyra W, Paardekooper SJ, Mac Low MM (2010). Orbital migration of low-mass planets in evolutionary radiative models: Avoiding catastrophic infall. nameOfConference

  
  

  DOI: 10.1088/2041-8205/715/2/L68

  
  

  QMRO: qmroHref
• Paardekooper SJ (2009). Disc-planet interactions in subkeplerian discs. nameOfConference

  
  

  DOI: 10.1051/0004-6361/200913184

  
  

  QMRO: qmroHref
• Paardekooper S-J, Papaloizou JCB (2009). On the width and shape of the corotation region for low-mass planets. nameOfConference

  
  

  DOI: 10.1111/j.1365-2966.2009.14512.x

  
  

  QMRO: qmroHref
• Paardekooper SJ, Papaloizou JCB (2009). On the width and shape of the corotation region for low-mass planets. nameOfConference

  
  

  DOI: 10.1111/j.1365-2966.2009.14512.x

  
  

  QMRO: qmroHref
• Paardekooper S-J, Papaloizou JCB (2009). On corotation torques, horseshoe drag and the possibility of sustained stalled or outward protoplanetary migration. nameOfConference

  
  

  DOI: 10.1111/j.1365-2966.2009.14511.x

  
  

  QMRO: qmroHref
• Paardekooper S-J, Papaloizou JCB (2008). On disc protoplanet interactions in a non-barotropic disc with thermal diffusion. nameOfConference

  
  

  DOI: 10.1051/0004-6361:20078702

  
  

  QMRO: qmroHref
• Paardekooper SJ, Mellema G (2008). Growing and moving low-mass planets in non-isothermal disks. nameOfConference

  
  

  DOI: 10.1051/0004-6361:20078592

  
  

  QMRO: qmroHref
• Paardekooper S-J, Thébault P, Mellema G (2008). Planetesimal and gas dynamics in binaries. nameOfConference

  
  

  DOI: 10.1111/j.1365-2966.2008.13080.x

  
  

  QMRO: qmroHref
• Paardekooper SJ (2007). Dust accretion onto high-mass planets. nameOfConference

  
  

  DOI: 10.1051/0004-6361:20066326

  
  

  QMRO: qmroHref
• Paardekooper SJ, Mellema G (2006). Halting type i planet migration in non-isothermal disks. nameOfConference

  
  

  DOI: 10.1051/0004-6361:20066304

  
  

  QMRO: qmroHref
• de Val-Borro M, Edgar RG, Artymowicz P et al. (2006). A comparative study of disc-planet interaction. nameOfConference

  
  

  DOI: 10.1111/j.1365-2966.2006.10488.x

  
  

  QMRO: qmroHref
• Paardekooper SJ, Mellema G (2006). Dust flow in gas disks in the presence of embedded planets. nameOfConference

  
  

  DOI: 10.1051/0004-6361:20054449

  
  

  QMRO: qmroHref
• Paardekooper SJ, Mellema G (2006). RODEO: A new method for planet-disk interaction. nameOfConference

  
  

  DOI: 10.1051/0004-6361:20053761

  
  

  QMRO: qmroHref
• Paardekooper SJ, Mellema G (2004). Planets opening dust gaps in gas disks. nameOfConference

  
  

  DOI: 10.1051/0004-6361:200400053

  
  

  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

  
  

  DOI: 10.1051/0004-6361:20030574

  
  

  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

  
  

  DOI: 10.1051/0004-6361:20020085

  
  

  QMRO: qmroHref

Supervision

This is not an exhaustive list and I would be happy to discuss other project possibilities.