Saturday, September 16, 2017

Episode 79 - Przybylski's Star Stuff

Recorded: 15 September 2017
Released: 16 September 2017
Duration: 81 minutes, 31 seconds

download the .mp3 audio file

Przybylski's Star in the DSS vis Aladin
Host Paul Carr welcomes Adam Smith and Sam Lichtenstein to talk about Przybylski’s Star, or HD 101065, possibly the weirdest star in astrophysics - even weirder than Boyajian's Star, maybe.


Przybylski's Star in Simbad
Jason Wright's blog series on Przybylski's Star
Antoni Przybylski (1961) - HD 101065-a G0 Star with High Metal Content
Antoni Przybylski (1977) - Is iron present in the atmosphere of HD 101065 ?
D.W. Kurtz (1982) - Rapidly oscillating Ap stars
Martinez and Kurtz (1990) - New observations and a frequency analysis of the extremely peculiar rapidly oscillating Ap star HD 101065
Cowley, et. al. (2000) - Abundances in Przybylski's star
Gopka, et. al. (2007) - On the possible nature of Bp-Ap Stars: an application to HD101065 and HR465
Renson and Manfroid (2009) - Catalogue of Ap, HgMn and Am stars
Joshi, et. al. (2016) - The Nainital-Cape Survey. IV. A search for pulsational variability in 108 chemically peculiar stars.
Chen et. al. (2017) -  A new photometric study of Ap and Am stars in the infrared.
Dzuba, et. al. (2017) - Isotope shift and search for metastable superheavy elements in astrophysical data

Jerry Pournelle

War is a Racket
RIP Jerry Pournelle
Episode 80 discussion thread


Paul - Alban Berg String Quartet - late Mozart quartets
Sam - Salvation
Adam - Witcher 3


Host and Producer: Paul Carr
Music: DJ Spooky

Monday, September 4, 2017

Episode 78 - Alien Signal Stephen Hawking Clickbait Mystery

Recorded: 4 September 2017
Released: 4 September 2017
Duration: 70 minutes, 11 seconds

download the .mp3 audio file

Host Paul Carr welcomes long-time panelist Nick Nielsen to talk about some of the latest news in radio astronomy - both the serious science and the lurid headlines. Radio Bursts (FRBs) have been know for some years now, but a the only known repeating FRB, 121102, has been acting up lately.


FRB 121102: Detection at 4 - 8 GHz band with Breakthrough Listen backend at Green Bank
Jason Siegel: Five Reasons Why The Signals From Stephen Hawking's Breakthrough Initiative Aren't Aliens
Scholz, et. al., Simultaneous X-ray, gamma-ray, and Radio Observations of the repeating Fast Radio Burst FRB 121102
C.J. Law, et. al. -
A Multi-telescope Campaign on FRB 121102: Implications for the FRB Population
Astronomer Jason Hessels on the repeating FRB
Astronomers have found the source of a deep space radio wave burst for the first time: We finally know the galactic culprit

The Most Mysterious Star in the Galaxy
Almost certainly wrong: an alien megastructure speculation about KIC 8462852



Host and Producer: Paul Carr
Music: DJ Spooky

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