Wednesday, January 25, 2017

Coronal Hole Faces Earth

:::: Coronal Hole Faces Earth ::::
A hole in the sun's atmosphere is directly facing Earth, and it is spewing a stream of solar wind in our direction. NASA's Solar Dynamics Observatory photographed the structure during the early hours of January 24th. This is a "coronal hole" (CH). A region in the sun's atmosphere where the magnetic field opens up and allows solar wind to escape to escape. The emerging stream of gas should reach Earth on January 27th or 28th and influence our planet for 2 to 3 days.  Arctic sky watchers, mark your calendars.  Auroras are in the offing later this week. 
Laser Interferometer Gravitational-Wave Observatory
The Laser Interferometer Gravitational-Wave Observatory (LIGO) is a large-scale physics experiment and observatory to detect cosmic gravitational waves and to develop gravitational-wave observations as an astronomical tool. Two large observatories were built in the United States with the aim of detecting gravitational waves by laser interferometry. Read more @ https://en.wikipedia.org/wiki/LIGO
There are two libraries at the Department of Mathematics; the research library and the students' library. The research library is situated in house 6 and contains a large collection of books and journals aimed at the researcher in mathematics and mathematical statistics. The library is available to the public, but those who do not have an entry card must contact the library first to make an appointment. The students' library is situated in room 21, house 5 and has literature for the students. These books can be useful when you for example are writing a thesis. We have reference copies of course literature, which can be read in the library during opening hours. The students' library also has tutoring sessions where our students can get help from our teaching assistants and PhD students. Both the research and the students' library are a part of the Stockholm University Library.


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