About Astrojohn

I am a science geek! Interests Astronomy, Skiing, Philosophy, basically any form of technology including writing automation software for my observatory. I will also share this with others using the same EQMOD/Astroart tool set.


New paper accepted by Royal Astronomical Society.

Now loaded on arXiv.org Cornell University Archive.

  1. arXiv:2206.06919  [pdfpsother]  astro-ph.SR astro-ph.EPEclipse timing variations in post-common envelope binaries: Are they a reliable indicator of circumbinary companions?
  2. Authors: D. PulleyI. D. SharpJ. MallettS. von Harrach
  3. Abstract: Post-common envelope binary systems evolve when matter is transferred from the primary star at a rate that cannot be accommodated by its secondary companion. A common envelope forms which is subsequently ejected resulting in a system with a binary period frequently between 2 and 3 hours. Where circumbinary companions are predicted, it remains unclear whether they form before or after the common en…
  4.  ▽ MoreSubmitted 14 June, 2022; originally announced June 2022.Comments: 16 pages, 8 figures, 7 binary systems and 163 observations

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