Showing posts with label Tabby's Star. Show all posts
Showing posts with label Tabby's Star. Show all posts

Monday, April 23, 2018

Burst 29 - Caral Supe and Evangeline


Released: 23 April 2018
Duration:12 minutes, 21 seconds

Download the .mp3 audio file
Los Cumbres light curve from www.wherestheflux.com


Paul Carr reviews what has been happening over the Winter and early Spring with respect to Boyajian's Star. We review the Winter observations, the Castelaz and Barker paper, and the two surprise March dips, Caral-Supe and Evangeline. We also talk about the upcoming Gaia Data Release 2 and what it might mean.

Links

Burst 24 and Burst 25
KIC 8462852: Maria Mitchell Observatory Photographic Photometry 1922 to 1991
Where's The Flux?
Bruce Gary's Boyajian's Star Page
Boyajian's R
Gaia DR2

Credits

Host and Producer: Paul Carr
Music: Jason Robinson


Monday, June 5, 2017

Burst 23 - Tabby Boyajian talks about the May 2017 dip



Released: 5 June 2017
Duration: 18 minutes 33 seconds

Downlink the .mp3 audio file

The dip as seen by the Las Cumbres telescope network
Paul Carr talks with Tabetha Boyajian about the flurry of observations of KIC 8462852 conducted
when the star dipped in brightness last month, and what might happen in the near future.

Topics include the relative size of the dip in different colors, the spectra, emission lines observed before the dip, periodicity, and what might happen soon.

Links: 

/r/KIC8462852
The KIC 8462852 Subreddit FAQ
Tabby's Star for the Perplexed
Where's the Flux?

http://www.brucegary.net/KIC846/#Yearly_Timescale_Fade_Observations

Burst 20
Season 3, Episode 4

Credits:

Host and Producer: Paul Carr
Music: Jason Robinson

The Wow! Signal Podcast is distributed under the Creative Commons Attribution/Share-Alike license.


Wednesday, April 6, 2016

Episode 28 - Tabby's Star for the Perplexed, part 3



Released: 6 April 2016
Duration: 43 minutes, 45 seconds
Thread: Astronomy and Astrophysics

Download the .mp3 audio file


Tabetha "Tabby" Boyajian
In Tabbys' Star for the Perplexed Part 1, we explained why KIC 8462852 is a puzzling star. In Part 2, we talked
about some of the explanations put forth and their weaknesses. In the third and last (for now) part of the series, we talk to Tabby herself, and she answers several reasonably informed questions about her team's work, past, present and future.
  • Introduction
  • Interview with Yale's Tabetha "Tabby" Boyajian concerning KIC 8462852
  • Frequently Asked Questions on Tabby's Star
  • Some of the better speculative solutions
  • Wrap up
  • Thanking Patreon Subscribers
  • Nagging, Begging
  • We want to hear from you
  • Outro

Links:

Boyajian, et. al., Planet Hunters IX: KIC 8462852 - Where's the Flux?
Tabby's Star for the Perplexed (blog post)
Tabby's Star for the Perplexed, Part 1
Tabby's Star for the Perplexed, Part 2
The Most Mysterious Star in the Universe

KIC 8462852 Facebook Page

Schaefer, KIC 8462852 Faded at an Average Rate of 0.165 +/- 0.014 Magnitudes Per Century from 1890 to 1989.
LCOGT
The Swift Mission
The AAVSO
Planet Hunters

KIC8462852 Subreddit
Centauri Dreams
The Unseen Podcast: I'm not saying it was aliens, but...

 

Credits:

Host and Producer: Paul Carr
VO: Erin Carr
Music: DJ Spooky and Sleep Research Facility

The spoken content of the Wow! Signal is distributed under the Creative Commons Attribution/Share-alike license.

Thursday, March 31, 2016

Burst 16 - Tabby's Star for the Perplexed, Part 2.



Released: 31 March 2016
Duration: 13 minutes, 21 seconds

Download the .mp3 audio file

Paul Carr continues with our series explaining just what is so puzzling about Tabby's Star, aka KIC 8462852. In this part we talk about some of the candidate explanations, including alien megastructures,with a Dyson Swarm being one such megastructure. It turns out there is a problem with the naive Dyson Swarm.

We briefly discuss the possible long-term dimming of Tabby's Star put forth by Bradley Schaefer, and its effect on the family of megastructures hypotheses.

Links

Tabby's Star for the Perplexed, Part 1
The Slow and Fast Dimming of Tabby's Star
AstroWright

Credits:

Written, Produced, and Voiced by Paul Carr
Music: Jason Robinson

The spoken portion of the Wow! Signal Podcast is Distributed under the Creative Commons Attribution/Share-Alike license. All music is either Creative Commons, or is used with permission of the artists.



Wednesday, February 10, 2016

The Dream of the Open Channel is Also Covering Tabby's Star

It's not complete yet, but I would appreciate both people who are knowledgable in astronomy and those who aren't to have a look at this latest post (which I may split into two parts). Astronomers should help me fact check, and non astronomers - please tell me how understandable it is. I am trying to make it as jargon free as I can and rely on only the most basic knowledge of astronomy that you also should have had in middle school. What is not clear to you?

When done, it will probably be edited down into a Burst.

Saturday, February 6, 2016

Burst 11- DASCH Photometry with Dr. Josh Grindlay



Released: 6 February 2016
Duration: 22 minutes, 18 seconds

Download the .mp3 audio file

Dr. Jonathan "Josh" Grindlay
An edited interview with Dr. Josh Grindlay concerning the use of measurements of star brightness
from the Digital Access to a Sky Century @Harvard to measure the dimming (or not) of Tabby's Star over a Century. Grindlay critiques Hippke's paper that found dimming in several stars in the DASCH data, and also Schaefer's claim that Tabby's Star (KIC 8462852) is slowly dimming.

Erratum: I said "Schaefer" in the epilogue when I meant "Grindlay"

Links:

Boyajian, et. al. Planet Hunters X. KIC 8462852 - Where's the Flux?
Schaefer: KIC 8462852 Faded at an Average Rate of 0.165+-0.013 Magnitudes Per Century From 1890 To 1989
The Wow! Signal Interview with Brad Schaefer: The Slow and Fast Dimming of Tabby's Star
Hippke and Angerhausen: KIC 8462852 did likely not fade during the last 100 years
Digital Access to a Sky Century at Harvard
Schaefer on Centauri Dreams: A Response to Michael Hippke

Landolt Standard Stars
Landolt, UBVRI Photometric standard stars in the magnitude range 11.0 - 16.0 around the celestial equator (Astronomical Journal, 1992)

Credits:

Host and Producer: Paul Carr
Music: Jason Robinson and Erika Lloyd




Thursday, January 14, 2016

Episode 27 - The Slow and Fast Dimming of Tabby's Star



Released: 14 January 2016
Duration: 62 minutes 4 seconds

Download the .mp3 audio file


Host Paul Carr talks to Dr. Bradley Schaefer about his research showing a dramatic dimming of
Bradley Schaefer
Tabby's Star over a century. This all but rules out any explanation anyone has put forth so far for the short term dimming of the star found in the Kepler data by Boyajian, et. al.

Links

KIC 8462852 Faded at an Average Rate of 0.165+-0.013 Magnitudes Per Century From 1890 To 1989
Where's the Flux? (paper by Boyajian, et. al.)

Centauri Dreams Discussion
KIC 8462852 - The Infrared Flux
IRTF/SPEX Observations of the Unusual Kepler Lightcurve System KIC8462852
Constraints on the Circumstellar Dust Around KIC 8462852

DASCH

I'm Not Saying it Was Aliens (Unseen Podcast panel discussion of Tabby's Star)

The AAVSO

No Signal Found from KIC8462852

Bradley E. Schaefer




Update: Hippke and Angerhausen disagree:  KIC 8462852 did likely not fade during the last 100 years

Further Update: Schaefer responds to Hippke on Centauri Dreams.

Further, further update: Hippke paper is revised in response to comments & We interview DASCH PI Josh Grindlay.

Credits
Host and Producer: Paul Carr
Music: Dj Spooky, Jason Robinson, Mike Griffin, George Hrab