My name is Hanno Rein and this is my academic website.
Since 2013, I am an Assistant Professor at the University of Toronto.
I am a member of the Department for Physical and Environmental Sciences.
My graduate appointments are at the Department of Astronomy and Astrophysics and the Department of Physics.
My research interests are broad.
They include planet formation, stochastic processes, planet migration, celestial mechanics, Saturn's rings, N-body codes, hydrodynamics, code development and high performance computing.
Numerical methods are a big passion of mine.
Make sure to check out my REBOUND code.
It is the only publicly available collisional N-body code.
You can do almost anything with it from long-term symplectic orbit integrations to shearing-sheet simulations of Saturn's rings.
The installation takes literally 30 seconds.
It's really cool and I'm very proud of it.
You also don't want to miss the Exoplanet App.
It is a free smartphone application for the iPhone/iPad that I wrote.
It let's you explore almost the entire universe, including the cosmic microwave background, galaxy clusters, our Milky Way, the Solar System and all discovered extra-solar planets.
Several million people have downloaded it already!
You want to contact me? Awesome!
- My mailing address is:
University of Toronto at Scarborough
Department for Physical and Environmental Sciences
1265 Military Trail
Toronto, Ontario M1C 1A4
- Telephone (office):
- Telephone (google voice):
- hanno.rein (-at-) utoronto.ca
- Office (Scarborough Campus):
- Science Wing, S504C
- Office (St George Campus):
We describe a new, high order integrator for gravitational dynamics that can handle both conservative and non-conservative forces. We ran a lot of tests and all results seem to show that our algorithm is superior to other integrators, including mixed variable symplectic integrators such as the one by Wisdom and Holman and other high order non-symplectic integrators, for example Bulirsch-Stoer. We took great care when implementing the scheme and achieve Brouwer's law (accuracy up to machine precision) for at least a billion orbits, equivalent to 10^11 timesteps. The scheme comes with adaptive timestepping and works extremely well on a wide range of problems with out-of-the-box setting and no fine-tuning of any parameters. This includes long term integrations of planetary systems, close encounters, Kozai cycles, migrating planets and dust undergoing PR-drag. You can find the preprint at http://arxiv.org/abs/1409.4779.
Dan Tamayo (CPS).
Open Exoplanet Catalogue
Check out the Open Exoplanet Catalogue! It's a new kind of astronomical database: open, community driven and decentralized. Send me a message if you have any question or want to contribute to it but don't know how!
Links to scientific publications
You can find all my publication on this website.
Alternatively, you can search the NASA Astrophysics Data System (ADS) or the arXiv preprint server.
I feel very strongly about open access.
All my publication are on the arXiv and you can access them free of charge.
If you also think publicly funded research should be freely available for everyone on this planet, please do the same.
Please also consider signing a petition against Elsevier.
There are funind opportunities available for students interested in a MSc or PhD. Please talk to me to get a list of possible projects.
Past and present collaborators in alphabetical order:
Short academic curriculum vitae
- Assistant Professor
- 2013 - now, University of Toronto, Canada
- Member at the Institute for Advanced Study
- 2010 - 2013, Institute for Advanced Study, Princeton, US
- PhD, Doctor of Philosophy
- 2007 - 2010, University of Cambridge, DAMTP, England
- Thesis: The effects of stochastic forces on the evolution of planetary systems and Saturn's rings
- Supervisor: Professor John C. B. Papaloizou
- MASt, Master of Advanced Study, Part III of the Mathemtical Tripos
- 2006 - 2007, University of Cambridge, DAMTP, England
- With distinction
- Exams: General Relativity, String Theory, Quantum Field Theory, Advanced Quantum Field Theory, Black Holes
- Essay: Finite time singularities (with Stephen J. Cowley)
- Undegratuate studies in both Mathematics and Physics
- 2003 - 2006, University of Tuebingen, Germany
This is a screenshot of my collisional N-body code REBOUND.
It can do so many things, there wasn't enough space on the main page to describe it.
You therefore need to click on the link below.
Or even better: just go over to github and try it out.
Find out more about REBOUND!
- Connaught New Researcher Award (2014)
- Funded by: The Connaught Fund
- NSERC Discovery Grant (2014-2020)
- Funded by: The Natural Sciences and Engineering Research Council of Canada
- Exoplanet Smartphone App (2012)
- Funded by: The Royal Astronomical Society, London
- Principal investigator: Hanno Rein
- Propellers, Frogs, and Random Walks (2012)
- Funded by: NASA, ROSES-11, Outer Planets Research Program
- Principal investigator: Eugene Chiang
- Collaborators: Hanno Rein, Matthew Tiscareno, Margaret Pan
Over the last few years, I developed a very successful smartphone application called Exoplanet.
It has attracted almost ten million (!) users and received outstandingly positive reviews.
The application lists all extra-solar planets, features three dimensional visualizations and an interactive model of the Milky Way.
The user can zoom out from the solar system all the way to the cosmic microwave background.
An enormous amount of supplementary data from the Hipparcos catalogue, the 2MASS survey, WMAP and other missions is included in the app.
This is like Google Earth, but for the entire universe.
When a new planet is found and added to the database users receive a push notification.
With about one million users already signed up for these notifications, it is a huge driving force in announcing new discoveries to the public.
I was recently awarded an outreach grant from the Royal Astronomical Society in London specifically for the Exoplanet App.
Download the Exoplanet app now!