The Most Mysterious Star in the Galaxy

Message boards : SETI@home Science : The Most Mysterious Star in the Galaxy
Message board moderation

To post messages, you must log in.

Previous · 1 . . . 6 · 7 · 8 · 9 · 10 · 11 · 12 . . . 14 · Next

AuthorMessage
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1335
Credit: 2,098,506
RAC: 5
Message 1767142 - Posted: 23 Feb 2016, 16:46:39 UTC

The original scientific paper (Boyajian,et al. Where's the Flux?) reports that the possibility of equipment problems was investigated as the cause of the stars dimming, but none were found.
Planets and brown dwarfs are limited in size by gravity. It doesn't appear that either can become much larger than Jupiter. This would be far too small to account for the reported dimming incidents of 15 and 22 percent. This would require something 1/3 to 1/2 of the star's diameter.
It may be that KIC 8462852 is not what all the evidence, save the dimming, make it appear to be, a quite ordinary, stable, main sequence F type star. This doesn't seem very likely, though.
ID: 1767142 · Report as offensive
Tom Mazanec

Send message
Joined: 19 Aug 15
Posts: 79
Credit: 6,938,247
RAC: 4
Message 1768681 - Posted: 29 Feb 2016, 21:45:58 UTC
Last modified: 29 Feb 2016, 21:47:18 UTC

ID: 1768681 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1335
Credit: 2,098,506
RAC: 5
Message 1768704 - Posted: 29 Feb 2016, 23:37:22 UTC

The video appears to show a ring of objects orbiting KIC 8462852 in a plane, at right angles to its apparent motion across the face of the star. If this motion represents a precession of the orbit, it seems very rapid by astronomical standards.
What could be imparting this motion to the objects? Would it be feasible for a ring-like megastructure to have what looks to be a polar orbit around the star? Could such an orbit be sustainable? Is there any possible advantage to such an orientation?
ID: 1768704 · Report as offensive
Tom Mazanec

Send message
Joined: 19 Aug 15
Posts: 79
Credit: 6,938,247
RAC: 4
Message 1771666 - Posted: 15 Mar 2016, 1:43:39 UTC

Here is a poll on the Cosmoquest forum I posted on this star being a civilization.

http://cosmoquest.org/forum/showthread.php?160297-Chance-KIC-8462852-is-ETI-site
ID: 1771666 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1335
Credit: 2,098,506
RAC: 5
Message 1784777 - Posted: 4 May 2016, 19:26:40 UTC

Some news on the KIC 8462852 matter. Astronomer, Dr. Bradley Schaefer has revisited his work, which revealed an apparent century-long trend of gradual dimming of this star. He used some different 'check stars', non-varying controls, which are compared to the changes in brightness of Tabby's Star. He also added some data points, derived from the earliest and latest of the historical Harvard Observatory photographic plates for the period 1890 to 1989.

Despite these modifications. he found that the same long-term dimming trend still appeared. Currently, historical photographic plates from a European observatory are being studied, to see if they will show a similar dimming of the star.

Gradual, century-long dimming of this star renders the remaining natural hypothesis, comets, very unlikely. Literally hundreds of thousands of them, all of unusually large size would be required, all neatly aligned between KIC 8462852, and Earth.
ID: 1784777 · Report as offensive
Profile Lynn Special Project $75 donor
Volunteer tester
Avatar

Send message
Joined: 20 Nov 00
Posts: 14162
Credit: 79,603,650
RAC: 123
United States
Message 1786473 - Posted: 10 May 2016, 21:41:41 UTC - in response to Message 1784777.  

In the news.

New study supports natural causes, not alien activity, explain mystery star's behavior

Sorry, E.T. lovers, but the results of a new study make it far less likely that KIC 8462852, popularly known as Tabby's star, is the home of industrious aliens who are gradually enclosing it in a vast shell called a Dyson sphere.

Public interest in the star, which sits about 1,480 light-years away in the constellation Cygnus, began last fall when Yale astronomer Tabetha ("Tabby") Boyajian and colleagues posted a paper on an astronomy preprint server reporting that "planet hunters" - a citizen science group formed to search data from the Kepler space telescope for evidence of exoplanets - had found unusual fluctuations in the light coming from the otherwise ordinary F-type star (slightly larger and hotter than the sun).

http://phys.org/news/2016-05-natural-alien-mystery-star-behavior.html
ID: 1786473 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1335
Credit: 2,098,506
RAC: 5
Message 1786541 - Posted: 11 May 2016, 2:25:57 UTC

The new paper by Hipke, et al attempts to negate Schaefer's work, through January, which seems to indicate a century long dimming trend in KIC 8462852. The matter is far from settled. In any case, it does not address itself to Schaefer's revised analysis, from April, which uses new check stars, and added data points, but still finds a long term dimming.
ID: 1786541 · Report as offensive
Profile Lynn Special Project $75 donor
Volunteer tester
Avatar

Send message
Joined: 20 Nov 00
Posts: 14162
Credit: 79,603,650
RAC: 123
United States
Message 1788186 - Posted: 17 May 2016, 21:45:10 UTC - in response to Message 1786541.  

more news.

Alien megastructure? Dimming star may have less exotic explanation

A mysterious darkening star might not be home to an alien megastructure after all. Instead, the dimming that apparently occurred over the course of a century may actually have resulted from how telescopes and cameras have changed over time, researchers said.

Last fall, a star named KIC 8462852 made news when scientists found unusual fluctuations in the object's light. The star is an otherwise-ordinary F-type star, slightly larger and hotter than Earth's sun; it sits about 1,480 light-years away from Earth in the constellation Cygnus.

http://www.foxnews.com/science/2016/05/17/alien-megastructure-dimming-star-may-have-less-exotic-explanation.html?intcmp=hpff
ID: 1788186 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1335
Credit: 2,098,506
RAC: 5
Message 1788410 - Posted: 18 May 2016, 12:20:26 UTC

Observers for the American Association of Variable Star Observers (AAVSO) have recently reported interesting variations in the light output of Tabby's Star.

The first of these was reported on May 4th. The star appeared to have dimmed by about 0.5 magnitude. The second report is from May 16th. In this instance the star seemed to brighten by 6 magnitudes. Anomalous brightening in this star had not been reported before this.

If these reports stand up to scrutiny, they will offer further support for KIC 8462852 truly being the most mysterious star in the galaxy.
ID: 1788410 · Report as offensive
Tom Mazanec

Send message
Joined: 19 Aug 15
Posts: 79
Credit: 6,938,247
RAC: 4
Message 1788890 - Posted: 20 May 2016, 3:54:18 UTC
Last modified: 20 May 2016, 3:59:56 UTC

Please contribute to the kickstarter campaign to monitor this star
https://www.kickstarter.com/projects/608159144/the-most-mysterious-star-in-the-galaxy?token=45297e55
ID: 1788890 · Report as offensive
Tom Mazanec

Send message
Joined: 19 Aug 15
Posts: 79
Credit: 6,938,247
RAC: 4
Message 1789815 - Posted: 23 May 2016, 17:36:27 UTC - in response to Message 1788410.  

Observers for the American Association of Variable Star Observers (AAVSO) have recently reported interesting variations in the light output of Tabby's Star.

The first of these was reported on May 4th. The star appeared to have dimmed by about 0.5 magnitude. The second report is from May 16th. In this instance the star seemed to brighten by 6 magnitudes. Anomalous brightening in this star had not been reported before this.

If these reports stand up to scrutiny, they will offer further support for KIC 8462852 truly being the most mysterious star in the galaxy.


Mike, could you please provide a link for the May 16 brightening? I have not been able to find anything on it on the Web.
ID: 1789815 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1335
Credit: 2,098,506
RAC: 5
Message 1789859 - Posted: 23 May 2016, 21:10:21 UTC
Last modified: 23 May 2016, 21:24:32 UTC

Tom; On the 18th, I posted about the very large brightening reported for May 16th. Very recently this data seems to have been removed from the AAVSO Light Curve Generator. It was presumably erroneous. In its place there is now a smaller but still apparently significant dimming, in the B band, on that date.

http://www.aavso.org/lcg
ID: 1789859 · Report as offensive
Profile Jon Golding
Avatar

Send message
Joined: 20 Apr 00
Posts: 105
Credit: 841,861
RAC: 0
United Kingdom
Message 1790016 - Posted: 24 May 2016, 11:18:16 UTC - in response to Message 1789859.  

If you select the option to display 'discrepant' data, then you can see the points that have been manually removed
ID: 1790016 · Report as offensive
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34017
Credit: 18,883,157
RAC: 18
Belgium
Message 1790254 - Posted: 25 May 2016, 12:32:34 UTC

Another link on our mysterious star:

A Kickstarter Campaign for KIC 8462852
rOZZ
Music
Pictures
ID: 1790254 · Report as offensive
Profile Jon Golding
Avatar

Send message
Joined: 20 Apr 00
Posts: 105
Credit: 841,861
RAC: 0
United Kingdom
Message 1790516 - Posted: 26 May 2016, 10:15:21 UTC - in response to Message 1790016.  

Another strange dip in brightness can be seen in the B-filter data on May 23rd. However, it's perhaps worth noting that all of these unexplained dips were recorded by the same observer (PXR).
ID: 1790516 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1335
Credit: 2,098,506
RAC: 5
Message 1793459 - Posted: 4 Jun 2016, 19:23:27 UTC - in response to Message 1790254.  
Last modified: 4 Jun 2016, 19:24:20 UTC

Another link on our mysterious star:

A Kickstarter Campaign for KIC 8462852


Thank you, Julie; The Tabby's Star Kickstarter campaign is still ongoing, for the next 12 days. They hope to purchase observation time at a network of private observatories, in order to watch for dips in the light output of KIC 8462852.

Observation of this star during such dimming incidents, and detailed characterization of the resulting light curves and spectra will be the means of really understanding what is taking place at Tabby's Star.
On the chance that the proposed observations just might reveal evidence of extraterrestrial intelligence at work, it would be regrettable, if they were not to take place.
The contributions of persons interested in this remarkable star are still very much needed to raise the needed 100,000 dollars. Pledged contributions will only be collected if this goal is reached.
ID: 1793459 · Report as offensive
Tom Mazanec

Send message
Joined: 19 Aug 15
Posts: 79
Credit: 6,938,247
RAC: 4
Message 1796648 - Posted: 16 Jun 2016, 16:58:35 UTC

Just a few more hours in the campaign and we are almost there.
Come on, people!
ID: 1796648 · Report as offensive
Tom Mazanec

Send message
Joined: 19 Aug 15
Posts: 79
Credit: 6,938,247
RAC: 4
Message 1803834 - Posted: 20 Jul 2016, 23:36:06 UTC

Tabby is trying to set up a discussion board on the star https://www.kickstarter.com/projects/608159144/the-most-mysterious-star-in-the-galaxy/posts/1633722
ID: 1803834 · Report as offensive
Profile Lynn Special Project $75 donor
Volunteer tester
Avatar

Send message
Joined: 20 Nov 00
Posts: 14162
Credit: 79,603,650
RAC: 123
United States
Message 1807716 - Posted: 7 Aug 2016, 5:40:19 UTC - in response to Message 1803834.  

article on Tabby's Star.

Scientists Are Now Even More Confused By Potential "Alien Superstructure"

Within our own galaxy, some astronomers believe there may be a massive piece of alien technology, built to harvest energy from a distant star. The star, KIC 8462852, also known as Tabby's Star, exhibits strange behavior, flickering and dimming, that can't be explained by any known astronomical phenomena. A new, unpublished study posted to arXiv, reports the results of studying images of the star from the Kepler Telescope over the past four years. The paper shows shocking results: the star's luminosity varied, sometimes dipping by 20% over the course of the study period. Even more perplexingly, its total luminosity, or flux, diminished by 4% overall over that time.

http://www.popularmechanics.com/space/deep-space/a22220/alien-superstructure-tabbys-star/
ID: 1807716 · Report as offensive
Profile William Rothamel
Avatar

Send message
Joined: 25 Oct 06
Posts: 3756
Credit: 1,999,735
RAC: 4
United States
Message 1807760 - Posted: 7 Aug 2016, 12:50:14 UTC - in response to Message 1807716.  
Last modified: 7 Aug 2016, 12:52:52 UTC

I am in a mood to suggest that this star may be a multi-body system with hot Jupiters, brown dwarfs, or the like orbiting closely. I find the rush to attribute what is supposedly observed to alien intelligence and profound construction projects as unwarranted nonsense. The star is quite distant and apparently cannot be closely observed optically ?
ID: 1807760 · Report as offensive
Previous · 1 . . . 6 · 7 · 8 · 9 · 10 · 11 · 12 . . . 14 · Next

Message boards : SETI@home Science : The Most Mysterious Star in the Galaxy


 
©2022 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.