Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration? · HackerPapers discussions

Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration? — mentioned by stereoabuse

Thu, 21 Jan 2021 23:03:42 GMT

This author has also proposed that the solar system has already been visited: "‘Oumuamua may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization."[0] The rest of the paper covers the possibility that the ‘Oumuamua object was sent unintentionally to Earth vicinity by an alien civilization. [0] https://arxiv.org/pdf/1810.11490.pdf

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Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration? — mentioned by techdragon

Mon, 04 Jan 2021 05:27:35 GMT

Comets show similar "weird" accelerations. Its not aliens, its probably just outgassing! Here's the first public paper I could find off hand on the topic. The acceleration due to outgassing of 67P/Churyumov–Gerasimenko (of Rosetta spacecraft fame) https://arxiv.org/abs/1902.02701 While I haven't personally seen anything that decides if Oumuamua counts as a comet or not, thats beside the point, since anything can outgas with enough heat. It appears to be covered with Tholins (based on the spectroscopy https://arxiv.org/abs/1712.06552) which aren't immune to outgassing, and likely make up at…

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Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration? — mentioned by _rpd

Tue, 05 Feb 2019 21:17:43 GMT

Here's the paper Loeb co-authored ... Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration? https://arxiv.org/abs/1810.11490v4

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Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration? — mentioned by nkurz

Wed, 16 Jan 2019 20:06:11 GMT

The following October, Avi Loeb, the chair of Harvard’s astronomy department, co-wrote a paper (with a Harvard postdoctoral fellow, Shmuel Bialy) that examined ‘Oumuamua’s “peculiar acceleration” and suggested that the object “may be a fully operational probe sent intentionally to Earth’s vicinity by an alien civilization.” The referenced paper is here: Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration? https://arxiv.org/abs/1810.11490

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Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration? — mentioned by millzlane

Wed, 07 Nov 2018 23:00:48 GMT

Link to paper: https://arxiv.org/pdf/1810.11490.pdf

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Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration? — mentioned by yesenadam

Tue, 06 Nov 2018 13:21:40 GMT

Well, the paper[0] spends ~98% of the time not claiming that. I think I thought those pictures of it were what it looked like! but "The large variations on the light curves indicate that ʻOumuamua is a highly elongated object... However, the size and shape have not been directly observed as ʻOumuamua appears as nothing more than a point source of light even in the most powerful telescopes. Neither the albedo or triaxial ellipsoid shape are precisely known."[1] [0] https://arxiv.org/pdf/1810.11490.pdf [1] https://en.wikipedia.org/wiki/%CA%BBOumuamua

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Could Solar Radiation Pressure Explain 'Oumuamua's Peculiar Acceleration? — HN submission

Sun, 04 Nov 2018 00:41:10 GMT

Could Solar Radiation Pressure Explain Oumuamua’s Peculiar Acceleration?

90 points; 36 discussion replies on HN. Paper and source history. A submission is not an endorsement.