After struggling for sometime, the Foundation for the Study of Cycles is now operating properly again, and its Forum is also restarted. Please consider posting...

Sagittarius A* is considered a large Black Hole at the center of the Milky Way. Around this BH a certain number of Stars (or mini Black Holes) are...

At bottom is my posting of 9-Jan-2019 wherein I described finding the lost quasar "0440-168" on the basis of a strong NVSS radio source associated to the...

I have a question which I can't resolve online and perhaps you might answer if you have the time. I'm familiar with the M-sigma relation for supermassive...

Le 10/03/2021 11:09, Phillip Helbig (undress to reply) a écrit : How well do we know the value of G? G is the constant (well, as far as we know) of...

] Having been severely disappointed by the extremely low quality of production by two astronomy journals (at least one of which didn't have such problems...

Those who use Pan-STARRS data might bemoan the lack of a "u" band. There is a quick fix, of sorts -- the POSSI-O band which is centered on 4050A. While not...

How well do we know the value of G? G is the constant (well, as far as we know) of nature whose value is known with the least precision. How well do we know...

I would appreciate it if someone who has published something in the European Physical Journal H via LaTeX could contact me via email.

Hi I have posted several times here about a "sea" of galaxies just beyond the limit of our telescopes. Two new obsevations start confirming the existence of...

Why is Tau Ceti a G-type star and Toliman (Alpha Cen B) a K-type? In terms of mass, Tau Ceti is actually the lighter one (78% of the Sun's mass vs. 90% for...

In a paper in the Astrophysical Journal, (The Astrophysical Journal, 904:51 (20pp), 2020 November 20) several researches cnfirm MOND's prediction of 1984:...

The 13th International LISA Symposium is happening online today (2020-Sept-01), tomorrow (2020-Sept-02), and thursday...

The Million Quasars (Milliquas) catalogue v6.6 is released with data from publications to 30-August-2020, with the count of fully classified type-I quasars &...

Some may be interested in a Jul 9 online talk "Relieving the Hubble tension with primordial magnetic fields" by Levon Pogosian. Details are at...

The LIGO/Virgo collaboration has just announced their detection of a gravitational-wave signal, GW190814 (observed on 2019 August 14), interpreted as the...

Monthly Notices of the Royal Astronomical Society has charged authors nothing; costs are covered (and more, as the commercial publisher makes a profit and also...

Please give comments OJ 287 binary black hole system articles of proper time general relativity analytic solution. Weinberg S. 1972 Gravitation and Cosmology...

Accordingly to this article: https://medium.com/the-cosmic-companion/is-the-universe-younger-than-we-thought-e8a649a32ec8 "Is the Universe Younger than We...

When it's complete, a new infrared telescope in Australia will give astronomers an unprecedented glimpse of the universe. The Dynamic Red All-Sky Monitoring...