Since flyby anomaly is one of my interest, here is some “original research”, in Wikipedia lingo. In short, I don’t think flyby anomaly is real, i.e. caused by novel physics.
Flyby anomaly theorists were excited by Juno flyby of 2013. Predictions were made, and it was considered a particularly clean case. Here is a representative quote from Gravitational Anomalies in the Solar System:
Juno flew by the Earth on 9 October 2013; in principle, it would be an ideal probe to detect the anomaly, if any, since the control sequence for the spacecraft did not introduce significant translational forces over an 8-days interval centered on the perigee passage.
This paper posted to arXiv in 2015 still gives “prediction”:
Our model can also predict the result for the still not analyzed Juno flyby. The prediction is a behaviour very similar to the Cassini flyby and, consequently, a similar decrease is expected.
The problem is, Juno did not show any flyby anomaly and the analysis was published in 2014. It seems that there is no public copy on the web, but “Reconstruction of Earth flyby by the Juno spacecraft” was quoted in The Flyby Anomaly: an Investigation into Potential Causes. Here is an abstract:
In particular, no anomalous velocity change was observed at or near perigee as has been observed in some of the previous Earth gravity assist flybys by other spacecraft.
The last paper concludes that the most likely explanation is solar radiation pressure. In particular, “modifications of the specular and diffuse reflectivity coefficients (of the spacecraft) by an amount ranging from 10^-4 to 4*10^-2 are sufficient to successfully eliminate the unexpected velocity shift at perigee”.
Then, there are the things that don’t work for known reasons which never stopped the computing industry from building whole platforms out of them… like DRM.
Ah, but DRM works exactly as designed; it simply raises the cost of copyright infringement and therefore steers a large percentage of potential infringers into legal, simpler avenues.
Since flyby anomaly is one of my interest, here is some “original research”, in Wikipedia lingo. In short, I don’t think flyby anomaly is real, i.e. caused by novel physics.
Flyby anomaly theorists were excited by Juno flyby of 2013. Predictions were made, and it was considered a particularly clean case. Here is a representative quote from Gravitational Anomalies in the Solar System:
This paper posted to arXiv in 2015 still gives “prediction”:
The problem is, Juno did not show any flyby anomaly and the analysis was published in 2014. It seems that there is no public copy on the web, but “Reconstruction of Earth flyby by the Juno spacecraft” was quoted in The Flyby Anomaly: an Investigation into Potential Causes. Here is an abstract:
The last paper concludes that the most likely explanation is solar radiation pressure. In particular, “modifications of the specular and diffuse reflectivity coefficients (of the spacecraft) by an amount ranging from 10^-4 to 4*10^-2 are sufficient to successfully eliminate the unexpected velocity shift at perigee”.
Cool. This isn’t my area of expertise, so input on the plausibility of the article is awesome. :)
Hmm, things working for unknown reasons never stopped the computing industry from building whole platforms out of them…
Then, there are the things that don’t work for known reasons which never stopped the computing industry from building whole platforms out of them… like DRM.
Ah, but DRM works exactly as designed; it simply raises the cost of copyright infringement and therefore steers a large percentage of potential infringers into legal, simpler avenues.