In order to enable an iCal export link, your account needs to have an API key created. This key enables other applications to access data from within Indico even when you are neither using nor logged into the Indico system yourself with the link provided. Once created, you can manage your key at any time by going to 'My Profile' and looking under the tab entitled 'HTTP API'. Further information about HTTP API keys can be found in the Indico documentation.
Additionally to having an API key associated with your account, exporting private event information requires the usage of a persistent signature. This enables API URLs which do not expire after a few minutes so while the setting is active, anyone in possession of the link provided can access the information. Due to this, it is extremely important that you keep these links private and for your use only. If you think someone else may have acquired access to a link using this key in the future, you must immediately create a new key pair on the 'My Profile' page under the 'HTTP API' and update the iCalendar links afterwards.
Permanent link for public information only:
Permanent link for all public and protected information:
Magnetic fields of cosmic bodies - generated and maintained by dynamos
(Astrophysical Institute Potsdam)
It is generally believed that most of the magnetic fields observed on
cosmic bodies are due to dynamo processes, that is, are a consequence of
the motion of electrically conducting fluid matter in their interiors. The
dynamo proved to be one of the basic phenomena in cosmic physics. In
the talk some fundamentals of dynamo theory will be explained. Its
kinematic version is based on Maxwell's equations, whereas the full
theory considers also the hydrodynamic equations. After discussing some
general aspects of dynamo theory particular attention will be paid to the
mean-field concept, which proved to be useful in many applications. In
the last decades dynamo models for various specific cosmic bodies have
been elaborated. In addition, some laboratory experiments on dynamos
have successfully run. Examples for that will be elucidated.