Daily updates with Suspicious Observers
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Preposterous Planet, Storm Alerts (Sun & Earth) | S0 News Jul.2.2016
Links at https://www.youtube.com/watch?v=MdLVozPili0
We report on the discovery and characterization of the transiting planet K2-39b (EPIC 206247743b). With an orbital period of 4.6 days, it is the shortest-period planet orbiting a subgiant star known to date. Such planets are rare, with only a handful of known cases. The reason for this is poorly understood, but may reflect differences in planet occurrence around the relatively high-mass stars that have been surveyed, or may be the result of tidal destruction of such planets. K2-39 is an evolved star with a spectroscopically derived stellar radius and mass of 3.88+0.48−0.42 R⊙ and 1.53+0.13−0.12 M⊙, respectively, and a very close-in transiting planet, with a/R⋆=3.4. Radial velocity (RV) follow-up using the HARPS, FIES and PFS instruments leads to a planetary mass of 50.3+9.7−9.4 M⊕. In combination with a radius measurement of 8.3±1.1 R⊕, this results in a mean planetary density of 0.50+0.29−0.17 g~cm−3. We furthermore discover a long-term RV trend, which may be caused by a long-period planet or stellar companion. Because K2-39b has a short orbital period, its existence makes it seem unlikely that tidal destruction is wholly responsible for the differences in planet populations around subgiant and main-sequence stars. Future monitoring of the transits of this system may enable the detection of period decay and constrain the tidal dissipation rates of subgiant stars.
http://arxiv.org/abs/1605.09180
Filament Eruption, Storms, Quake Watch | S0 News Jul.3.2016
https://www.youtube.com/watch?v=W7MhGKtxFGg
Links at https://www.youtube.com/watch?v=W7MhGKtxFGg
Major Storms, Tropic/Quake Watch, Exoplanets | S0 News
Links at https://www.youtube.com/watch?v=1tyUfvktMCQ
Solar Activity, Mars Impact, Weather Alerts | S0 News Jul.5.2016
Links at https://www.youtube.com/watch?v=4p5KzClD-OA
Solar Eruptions, Solar Wind Watch, Weather | S0 News Jul.6.2016
Links at https://www.youtube.com/watch?v=4cWWgsgdKYA
Solar Flare, Earth Impact, Weather Warnings | S0 News Jul.7.2016
Links at https://www.youtube.com/watch?v=o7jbqg3kJXs
Magnetic Storm, SuperTyphoon Footage | S0 News Jul.8.2016
Links at https://www.youtube.com/watch?v=w6vytHR9D3I
Major Hail, Space Weather, Solar Watch | S0 News Jul.9.2016
Links at https://www.youtube.com/watch?v=bwYIy2lasIA
http://www.drroyspencer.com/2016/07/record-warm-2016-what-a-difference-one-month-makes/
http://www.solarsystemscope.com/
Re: Daily updates with Suspicious Observers
Links at https://www.youtube.com/watch?v=21OUn2cwvVY
http://www.ucl.ac.uk/mathematical-physical-sciences/maps-news-publication/saturn-sun-magnetic-rope
Earthquakes Return, Earth-Facing Quiet Responds | S0 News Jul.11.2016
Links at https://www.youtube.com/watch?v=s_I5svR5YC8
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