Weekly Update from the Open Journal of Astrophysics 13/06/2026

It’s Saturday again so it’s time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further three papers, bringing the number in Volume 9 (2026) to 122 and the total so far published by OJAp up to 570.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Thursday 11th June, is “Dancing Streams In Merging Halos: Stellar Streams in a MW–LMC-like merger” by (all based in the USA): Sachi Weerasooriya (Carnegie Observatories), Tjitske Starkenburg (Northwestern U.), Emily C. Cunningham (Columbia U.) & Kathryn V. Johnston (Flatiron Institute). This article explores how galaxy mergers, like the Milky Way-Large Magellanic Cloud merger, significantly alter the properties and structures of stellar streams, challenging the recovery of their initial orbits. It is in the folder marked Astrophysics of Galaxies.

The overlay for this paper is here

You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

https://fediscience.org/@OJ_Astro/116730200889106529

The second paper for this week, also published on Thursday 11th June but in the folder Cosmology and Nongalactic Astrophysics is “X-SORTER (X-ray Survey Of meRging clusTErs in Redmapper): X-ray and Spectroscopic Characterization of 12 Optically Selected Galaxy Cluster Merger Candidates” by Christopher Hopp, David Wittman, Rodrigo Stancioli, Zhuoran Gao & Faik Bouhrik (UC Davis) and Scott Adler (Rochester), all based in the USA. The X-SORTER program identifies merging galaxy clusters to study dark matter interactions, using optical indicators and X-ray observations. This method efficiently identifies active clusters suitable for detailed dark matter studies.

The overlay for this one looks like this:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/116730279994960097

The third and final paper of the week, published on Friday 12th June in the folder Earth and Planetary Astrophysics, is “JCMT Constraints on the Early-Time HCN and CO Emission and HCN Temporal Evolution of 3I/ATLAS” by Jason T. Hinkle (U. Illinois, USA) and 6 others based in the USA and Chile. This article presents observations of the third Interstellar Object, 3I/ATLAS, providing early sub-mm constraints on its activity. The findings suggest a steeper production rate slope than typical Solar System comets.

The overlay for this one is here:

The final, accepted version can be found on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116735805179724489

And that concludes this week’s update. It has been a slow week on the publishing front, but the main reason is that we have a big backlog of papers accepted but waiting for the authors to put their final versions on arXiv and we can’t do anything about that! I’ll do another update next Saturday.

Expatriates are the focus of much research in global mobility because they are often strategically important and costly. But what about the host country nationals (HCNs) they work with? Despite decades-old calls for more attention to HCNs, they continue to be treated as back-stage actors in global mobility.

Read more in this blog about the article I published with Snejina Michailova and Anthony Fee: https://www.emeraldgrouppublishing.com/journal/jgm/jgm-bitblog-working-expatriates-hcn-point-view

#Expatriate #HCN #Globalmobility #IHRM

My new 2026 subscription, the mighty High Country News. Longtime rss lurker but I'm happier to support in depth longform intermountain journalism and have it in print around the house.

The first issue featuring Portland's Albina music history is a tad on the nose, has me all squared up.
#HCN #HighCountryNews #Albina #xRated #wolves #kangarooRats #FrankMatsura #LandBack

@Jennifer @ianjs @ai6yr

Me, too. I also dropped the #LATimes at the same time for the same reason.

Support and read #TheGuardian #CalMatters #KPFK #KALW #KQED #PacificaNews #HCN (HighCountryNews) #Cityside #Berkeleyside #TheAtlantic #BayNature #BerkeleyScanner

Reluctantly subscribe to #NYTimes , but my commitment to that rag is tenuous.

O Hospital Estadual do Centro-Norte Goiano (HCN) realiza mais uma captação de órgãos, oferecendo esperança e nova chance de vida! A solidariedade das famílias transforma dor em amor.

https://mastermaverick.com.br/2025/01/hcn-um-exemplo-de-solidariedade-e-esperanca

#DoaçãoDeÓrgãos #Solidariedade #VidaNova #HCN #JuntosPelaVida