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How to cure a boring day:
In the 1990s when I studied astrophysics exoplanets was something new. Only one exoplanet was known at that time. I found it very interesting and did complement to my astrophysics with biology evolution studies and bio physics studies, there where no astrobiology invented in that time.
All these make todays seminar very interesting for me, something has happened since my own studies.
Some useful links:
Understanding the evolution of star-exoplanet systems:
By Prof. Dr. Katja Poppenhäger
You can read her abstract here:
Katja is Prof. Dr. at Potsdam University, the seminar was held at Stockholm University 2019.
Nowadays we have statistics over many thousands of exoplanets. Katja shows how the exoplanets divide up in different groups. The fourth quadrant is empty because of limitations in todays instrument. Katja has the second quadrant as her specialist area in her science work. Exoplanets that are closer then 0.1 AU and masses from 0.1 to 10 Earth masses.
Katja gives a summary:
After there was a couple of questions. Katja explain that radiation from stellar surface don't follow todays theory, it drops of faster than it should when star ages.
Katja shows a typical intensity drop when an exoplanet pass behind the star, it's the exoplanet's emission, ultrahot gas-planet. The time scale of X-axis is hour.
If you want to know more about Katja's research I have found a couple of links:
Take your time, the download looks to be slow.
She is a very active astronomer and I wish here the best luck and progress in her research of exoplanets !
These seminars are a good cure to my boring days. Do you have boring days too? Join me next time!
If you don't live in Stockholm in Sweden as I do I'm sure that you can find something similar to visit at your place. Or you do as all other do, search the internet, TED Talks is good.
No more boring days!