Tuesday, February 6, 2018

Burst 28 - The Cosmic Archipelago, part III



Released: 6 February 2018
Duration: 24 minutes, 48 seconds

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A hundred years ago cosmologists were struggling to understand the nature and structure of the universe, and at the heart of this struggle was the island universe hypothesis. Today we find ourselves confronted with a similar question posed at a far greater scale. In order to resolve our cosmic archipelago problem we will have to attempt to reconstruct a history of our universe as a part of a far larger cosmological system, and to do this we will have to extend cosmology beyond the observable universe -- but what, exactly, is the observable universe?

Supernova iPTF14hls
Przybylski's Star

Credits:

Writer and Host: Nick Nielsen
Producer and Announcer: Paul Carr
Music: by kind permission of the artist, Jason Robinson

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


Thursday, January 25, 2018

Burst 27 - The Cosmic Archipelago - Part 2



Released: 25 January 2018
Duration: 21 minutes, 51 seconds
The geologic time spiral

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The Cosmic Archipelago, part 1.

A hundred years ago cosmologists were struggling to understand the nature and structure of the universe, and at the heart of this struggle was the island universe hypothesis. Today we find ourselves confronted with a similar question posed at a far greater scale. As we confront these great questions of cosmology, whether a hundred years ago or today, we find ourselves faced with as many philosophical questions as scientific questions when we challenge the boundaries of our understanding. In Part II we focus on cosmological scales of time and what this means for human observation of a very old universe.

Links:

The Scale of the Universe, Shapley and Curtis

Credits:

Writer and Host: Nick Nielsen
Voiceover and Producer: Paul Carr
Music: Jason Robinson


Sunday, January 21, 2018

Burst 26 - The Cosmic Archipelago, Part 1.



Released: 21 January 2018
Duration: 19 minutes

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Henrietta Swan Leavitt,
discoverer of Leavitt's Law


A hundred years ago cosmologists were struggling to understand the nature and structure of the universe, and at the heart of this struggle was the island universe hypothesis.
Today we find ourselves confronted with a similar question posed at a far greater scale. As we confront these great questions of cosmology, whether a hundred years ago or today, we find ourselves faced with as many philosophical questions as scientific questions when we challenge the boundaries of our understanding. In Part I we focus on the original problems of constructing the cosmological distance ladder.

Links:

The Scale of the Universe, Shapley and Curtis

 

Credits:

Writer and Host: Nick Nielsen
Producer and Voiceover: Paul Carr
Music: Jason Robinson


Sunday, December 31, 2017

Episode 38 - The Overview Effect



Released: 31 December 2017
Duration: 65 minutes, 20 seconds

Direct download of audio .mp3 file

Daniela DePaulis and Nick Nielsen in conversation with Frank White on the Overview Effect.

Detailed show notes To Be Supplied.

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




Saturday, December 2, 2017

Burst 24- The Summer of Tabby's Star


Released: 3 December 2017
Duration: 11 minutes 43 seconds

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Host Paul Carr covers some recent developments with respect to Boyajian's Star, especially the 4 dips of the Summer of 2017.

Boyajian and Team's light curve for KI8462852 since just before the Elsie dip from wherestheflux.com

Links:

wherestheflux.com

Burst 23 - Tabby Boyajian discusses Elsie

Simon, et. al. - Where Is the Flux Going? The Long-Term Photometric Variability of Boyajian's Star
Meng, et. al. - Extinction and the Dimming of KIC 8462852
Steele, et. al. - Optical Polarimetry of KIC 8462852 in May-August 2017
Wyatt, et. al. -Modelling the KIC8462852 light curves: compatibility of the dips and secular dimming with an exocomet interpretation
NEOWISE

The script for the episode

Credits: 

Host and Producer: Paul Carr
Music: Jason Robinson


Thursday, November 16, 2017

Episode 37 - Sonar Calling GJ 273B



Released: 16 November 2017
Duration: 48 minutes, 5 seconds

Host Paul Carr talks to Douglas Vakoch of METI.org about a recent transmission using a powerful
radar transmitter to the star GJ 273, which has a super-Earth planet circling it in the habitable zone.

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Links:

GJ 273 on SIMBAD
The HARPS search for southern extra-solar planets XLI. A dozen planets around the M dwarfs GJ 3138, GJ 3323, GJ 273, GJ 628, and GJ 3293
GJ 273 in the Open Exoplanet Catalog
The EISCAT Tromso Facility
Sonar Barcelona
EISCAT Tromso Site
The Arecibo Message
Ignasi Ribas
The Story of Lincos

Our previous interview with Douglas Vakoch

The Unseen Podcast

Credits:

Host and Producer: Paul Carr
Music: DJ Spooky, Jason Robinson
Announcer: Erin Carr