Star's unusual dimming due to dust cloud not aliens

Star's unusual dimming due to dust cloud not aliens

This star is also known as the Boyajian's Star or the Tabby's Star.

After being hyped by insane theories, scientists studying the mysterious KIC 8462852 have come to a conclusion that might be the causal factor behind the diminishing trend of light from this Star.

"It's pretty much ruling out the theory of alien megastructures as it can not explain wavelength-dependent dimming".

"We suspect, instead, there is a cloud of dust orbiting the star with a roughly 700-day orbital period", he said.

The researchers collected observation data of the Tabby's star from October 2015 to March 2017 from two NASA - Swift telescopes, which took X-ray and UV light measurements, and Spitzer, which measures objects in infrared. Based on the sharp ultraviolet dip, the researchers determined that the blocking particles must be more significant than interstellar dust, which are small grains that could be found anywhere between Earth and the star.

In 2015, the star was also named Boyajian's star after Tabetha Boyajian, an astronomer at the Louisiana State University, who led a team that observed a dramatic 22 percent dip in the star's light.

The mystery deepened after the initial Boyajian et al. study. When passing in front of Tabby's Star, any object which is larger than dust particles will dim wavelengths of any light equally.

However, according to a new study, published in the Astrophysical Journal, the star's dimming is likely caused by an "uneven dust cloud" moving around the star.

Although the new study does shed some light on what causes long-term dimming of the star, it did not solve all the mysteries that surround the star.

The researchers found that the damping rate of the Tabby's star differs significantly between UV and infrared, which suggests a micro-sized dust screen.

Scientists have formerly discovered an unusual star that dramatically dips in brightness. They also did not confront the mystery of the major 20-percent dips in brightness that the Kelper was able to observe while studying the field of Cygnus, the primary mission.

And a different study - led by Joshua Simon of the Observatories of the Carnegie Institution for Science in Pasadena, California - just found that Tabby's star experienced two brightening spells over the past 11 years. "The realization that the star sometimes gets brighter in addition to periods of dimming is incompatible with most hypotheses to explain its weird behavior".



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