Starship Asterisk*

bystander wrote: No, just a little background information.

OK.

bystander wrote:http://asterisk.apod.com/viewtopic.php?t=36201

Oops. Sorry. Would it be best to combine the thread that I've made here with that one?

The First Pulsar astrobites | 2017 Sep 15 Today’s summary of a classical and significant paper highlights an important event in radio astronomy. This event results in two astronomers receiving the Nobel Prize while creating some much deserved controversy. It primarily involves three astronomers, An...

Notre Dame U. A one-of-a-kind star found to change over decades September 12, 2017 http://news.nd.edu/news/a-one-of-a-kind-star-found-to-change-over-decades/ Astronomers studying the unique binary star system AR Scorpii have discovered the brightness of the system has changed over the past decade. ...

As you say, Ann, interesting, and we await further discussion by experts with even more interest. I don't think this piece, from October 2016, got posted here. I've done an advanced Google search and can't find it. https://www.nature.com/articles/srep35596 Marginal evidence for cosmic acceleration f...

Here you go: arXiv: Timescape Cosmology google: Timescape Cosmology Many thanks. I found the sources I've posted via a Google search on Timescape Cosmology, but had not thought of doing a specific arXiv search. The piece in The Conversation is reprinted in The Wire, which is returned on the first p...

And yet more background (I'm really finding this fascinating.) DAVID L. WILTSHIRE, Int. J. Mod. Phys. D, 18, 2121 ( 2009 ).  https://doi.org/10.1142/S0218271809016193 FROM TIME TO TIMESCAPE — EINSTEIN'S UNFINISHED REVOLUTION [...]In a universe dominated by voids of the size observed in large-scale s...

Background from 2007. This article from the Australian Broadcasting Corporation explains what David Wiltshire is proposing as only Australians can: Dark energy a furphy, says new paper http://www.abc.net.au/science/articles/2007/12/21/2124258.htm Friday, 21 December 2007 Marilyn Head ABC ( BTW: Wiki...

Doing a search for "timescape cosmology" hoping to get a better grasp on what is being proposed, I found this article by David Wiltshire in The Conversation. It begins: Can we ditch dark energy by better understanding general relativity? https://theconversation.com/can-we-ditch-dark-energy...

http://www.nature.com/news/cassini-crashes-into-saturn-but-could-still-deliver-big-discoveries-1.22619 And from an email September 15, 2017 Dear Friends and Colleagues, After 18 years, here is my final Captain's Log. http://ciclops.org Carolyn Porco Cassini Imaging Team leader Director, CICLOPS, Sp...

http://www.eso.org/public/blog/stellar-fingerprints-using-exoplanets/ Stellar Fingerprints: Using Exoplanets to See the Surfaces of Stars 8 September 2017 Science Snapshots The Universe is absolutely teeming with stars — at least 100 billion populate our Milky Way galaxy alone. Yet because most sta...

http://www.eso.org/public/blog/eso-looking-at-the-many-faces-of-the-universe/ ESO, Looking at the Many Faces of the Universe Exploring the cosmos across the electromagnetic spectrum with the many telescopes at ESO 1 September 2017 Letters from the DG https://cdn.eso.org/images/thumb350x/eso1728a.jp...

http://www.eso.org/public/announcements/ann17058

In case this is useful http://m.esa.int/Our_Activities/Space_Science/Cassini-Huygens/How_to_follow_Cassini_s_end_of_mission HOW TO FOLLOW CASSINI’S END OF MISSION 12 September 2017 The international Cassini mission reaches its dramatic finale this Friday by plunging into Saturn’s atmosphere, conclud...

Background article in The Conversation by Caroline Foster and Richard McDermid 3D view helps us to understand how galaxies formed and evolved September 11, 2017 https://theconversation.com/3d-view-helps-us-to-understand-how-galaxies-formed-and-evolved-81318 Thanks for posting this, Margarita! Very ...

https://www.ras.org.uk/news-and-press/3043-astronomers-spun-up-by-galaxy-shape-finding Background article in The Conversation by Caroline Foster and Richard McDermid 3D view helps us to understand how galaxies formed and evolved September 11, 2017 https://theconversation.com/3d-view-helps-us-to-und...

The NAOJ link didn't work for me, returning a "the site cannot be reached" notice. I googled and found this one
https://www.nao.ac.jp/en/news/science/2 ... -alma.html


And this one
https://phys.org/news/2017-09-explosive ... cores.html

https://arxiv.org/abs/1709.00478 Astrophysical Implications of a New Dynamical Mass for the Nearby White Dwarf 40 Eridani B Howard E. Bond (1,2), P. Bergeron (3), A. Bedard (3) ((1) Penn State Univ., (2) Space Telescope Science Institute, (3) Departement de Physique, Univ. de Montreal) (Submitted o...

A quick note to point out that http://asterisk.apod.com/viewtopic.php?t=34912 has the info that the star is about half the mass of the Sun and the black hole is about 12 Earth masses. Therefore the BH will not be orbiting the star (as is said in the SAO image text), but both will be orbiting the com...

AAAS Science: Long-rumored midsized black hole may be hiding out in the Milky Way By Daniel Clery Sep. 4, 2017 Astronomers have found the best evidence yet for the existence of a midsized black hole—long-rumored objects bigger than the small black holes formed from a single star, yet far smaller th...

ESA: CELEBRATING EUROPE’S SCIENCE HIGHLIGHTS WITH CASSINI The international Cassini­-Huygens mission has explored Saturn and its rings and moons for 13 years, and will conclude by plunging into the planet’s atmosphere next week. This article highlights some of the mission’s exciting discoveries led...

Interesting to see that a similar process happens in superluminous NOVAE as well as reported in this post only a few days back: http://asterisk.apod.com/viewtopic.php?f=31&t=37537 As the explosion begins, it ejects a cooler, slower wave of gaseous material, relatively speaking. Behind it, though...

Thanks, bystander, for the link to the topic posted in March. Very useful.

Thanks for putting the link to the AAS Nova topic, bystander. I had been scratching my head trying to recall where I'd read about black widow pulsars.

16th Meeting of AAS High Energy Astrophysics Division (HEAD). AAS Nova Editor’s note: This week [ the week beginning 21 August 2017] we’re in Sun Valley, Idaho at the 16th meeting of the AAS High Energy Astrophysics Division (HEAD). Follow along to catch some of the latest news from the field of hi...