![]() If you can think easily in three dimensions, you’ll see this is obvious if not, then you can sit here by me. ![]() Tidal locking happens when the planet rotates around its own axis in the same amount of time it takes to orbit its star. The far side is frozen and the near side is blazing, and life has problems with extremes. Tidally locked planets are probably not conducive to life. I was about to get impatient with the lack of astronomical consensus and exactitude when I read about one more criterion for life: no tidal locking. Astronomers also have lists of criteria for alien life – planet composition, type of star, temperature range, water, sunlight range, atmospheric thickness, oxygen levels, distance from star – and not all lists are the same. Astronomers have all these phrases that imply some planet might have life - habitable, Earth-like, Earth-sized the habitable zone, the Goldilocks zone – and not all the phrases mean the same thing. I came across tidal locking whilst happily prowling around on the internet, trying to find whether astronomers agreed on what they were talking about when they talked about an exoplanet’s habitability. The moon is tidally locked to the earth and not until 1959 did anyone on earth see the moon’s other face. Tidal locking means one side of the planet always faces the star, the other side always faces away. We do this every night – bar the salmon - and I’ll guess with a high degree of confidence that a high percentage of all people who live together do exactly the same.Īstronomers would say we’re all tidally locked. The replacement brakes haven’t come in yet.” And I’ll say, “I wrote New Scientist again about getting paid.” Then he’ll go into the living room and read his book, and I’ll get the rest of dinner because I like good food better than he does, and we’ll sit down at the table and I’ll say, “God I’m tired,” and he’ll eat salmon. They report it was likely that as material left over from the TDE encircled the black hole, it ran into similar material that had gone around the black hole in the opposite direction and produced a shockwave-and that was the source of the high polarization they had observed.I’ll go home tonight, I’ll open the front door, I’ll yell, “Hey sweetie, hi!” Then Sweetie will yell, “Hello, young Ann.” I’ll look at the mail, then I’ll yell again, “Did you pick up the salmon?” And he’ll say, “Yep, it’s in the refrigerator.” And then I’ll look over the mail and start to throw away the junk and he’ll come downstairs and say, “Don’t throw away anything with my name on it,” and I’ll say, “But it’s junk and it just sits around for days,” and he’ll say, “I want to look at it.” So I’ll put it on the hall table where it will sit around for days, and then I’ll go into the kitchen and start dinner, and I’ll say, “Can you come peel some onions?” And he’ll come peel the onions, and I’ll say, “How was your day?” and he’ll say, “Fine. The team next compared their observations with models depicting interactions between black holes and stars. But eight months later, no radio emissions were detected, which would not have been the case had the emissions been associated with a relativistic jet. They noted that such a high degree of polarization suggested the presence of a relativistic jet. ![]() ![]() They were also able to see that the material grew hotter due to energy from the encounter.ĭuring their initial work, they found that optical polarization measurements surrounding the TDE varied during the event and peaked with a linear polarization degree of 25 ± 4%. ![]() They were able to see that material left over from the TDE circled all the way around the black hole. To that end, they obtained data from the Nordic Optical Telescope as it had captured a TDE in action and used software from the High Energy Astrophysics Science Archive Research Center to study it. In this new effort, the researchers sought to learn more about the source of a bright light from such a TDE strand. Such actions are known as tidal disruption events (TDEs) and the strand material from the destroyed star tends to light up as it circles the black hole before falling in. Prior research has shown that if a black hole moves close enough to a star, the star can be stretched into long strands rather than falling in directly. ![]()
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