Archive for The Open Journal of Astrophysics

SCOPUS SCOPUM

Posted in Open Access with tags , , on November 21, 2023 by telescoper

I’ve just spent the best part of two hours completing a lengthy and very tedious online form in order to apply to have the Open Journal of Astrophysics listed on Scopus. I did try this before, back in September, but the Scopus website crashed when I tried to submit the application. I emailed their helpline and they said they’d get back to me, but they never did.

One of the annoying things about the proposal form is the duplication of information. Almost every page requires the applicant to enter the name and email of the Managing Editor (that’s me). They could just carry that information forward from one page to the next.

An even more annoying thing is that one has to upload ten recent articles published by the Journal. It won’t accept weblinks, which would be more efficient for an online journal like OJAp. So I had to download ten papers from arXiv just to upload them again. Then I discovered they have a maximum file size of 10MB, which rules out several of our recent papers.

(All this reminds me that the next book on my reading list is Bullshit Jobs, by David Graeber…)

My personal feeling is that I couldn’t care less about getting listed by Scopus – which is run by racketeering publishing giant Elsevier as a gate-keeper for the academic publishing industry – but it seems that there are a lot of bean-counters around the world who think a journal isn’t a journal unless it is on their list, no doubt because Elsevier told them that is the case.

In fact it’s quite easy to look up citations, etc, for journals and individual articles without recourse to Scopus but administrators have been brainwashed into handing over large sums of money to Elsevier to inflate their already substantial profits. I don’t feel I should be asking for approval from the likes of them.

Anyway, the flakiness of their Scopus application platform – see paragraphs 1 to 3 above – does not fill me with confidence that Elsevier put much effort into the process. On the other hand, they have a captive audience so why should they? Now, however, at least I have an email confirming they received the application along with a tracking number and the statement

Please allow up to several months for the review process to be completed. 

The only reason for posting this here is to remind me to post if and when they respond. I won’t be holding my breath.

Flying visit to Cardiff

Posted in Biographical, Cardiff, Open Access with tags , , , , on November 1, 2023 by telescoper

I got up at 3am this morning to take a bus to an airport, then a flight to Bristol Airport, then another bus to Bristol Temple Meads, and then a train to Cardiff in order to give a seminar. Now I’m in the middle of the reverse process, having a pint in Bristol Airport.

In case you’re thinking of using Bristol Airport at any time in the next 8 weeks, then please bear in mind that there are major roadworks on the approach road, so be sure to allow extra time. It took over an hour from Bristol Temple Meads this evening, more than double the usual time, and it’s only 8 miles…

I’m more than a little tired after all that, but it was still very nice to meet up with friends and former colleagues again. I was particularly delighted to learn that Professor Haley Gomez has been appointed Head of the School of Physics and Astronomy. Congratulations to Haley!

I’ll upload the slides from my talk when I get back to base. For the time being, however, I’m just going to chill in the departure lounge before my return flight.

Update: the return leg ran to schedule so here, as promised, are the slides for the talk I was invited to give:

P.S. I’ll be giving two talks on the same theme later this month in different institutes in France.

Two New Publications at the Open Journal of Astrophysics

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , , , , , on October 20, 2023 by telescoper

It’s Friday so it’s a good time to catch up with the week’s action at the Open Journal of Astrophysics, where there have been two new publications so far this week. These papers take us up to a total of 40  in Volume 6 (2023) and 105 in total since we started publishing.

The title of the first paper is “Halo Properties from Observable Measures of Environment: I. Halo and Subhalo Masses” and its primary classification is Astrophysics of Galaxies. it is an exploration using neural networks of how the peak masses of dark matter halos and subhaloes correlate with observationally-accessible measures of their dependence on environment.

The authors based in the United States of America: Haley Bowden and Peter Behroozi of the University of Arizona, and Andrew Hearin of the Argonne National Laboratory

Here is a screen grab of the overlay which includes the abstract:

 

You can click on the image of the overlay to make it larger should you wish to do so. You can find the officially accepted version of the paper on the arXiv here.

The second paper was published on 18th October 2023.  The primary classification for this one is Cosmology and Nongalactic Astrophysics and is “Mitigating the noise of DESI mocks using analytic control variates”. For those of you not up with the lingo, DESI stands for the Dark Energy Spectroscopic Instrument and you can read more about it here.

The lead author for this one is Boryana Hadzhiyska of the Lawrence Berkeley Laboratory and the University of California, Berkeley (USA) and there are 32 other authors. This paper presents a method for reducing the effects of sample variance on cosmological simulations using analytical approximations and tests it using DESI data.

Here is a screen grab of the overlay which includes the abstract:

 

 

You can click on the image of the overlay to make it larger should you wish to do so. You can find the officially accepted version of the paper on the arXiv here.

Open Peer Review Analytics

Posted in OJAp Papers, Open Access with tags , , , , on October 18, 2023 by telescoper
A Peer, Reviewing. Photo from Pexels.com

Quite a few people have contacted me to ask about the Peer Review Process at the Open Journal of Astrophysics so I thought I’d do a quick post here to explain a bit about it here.

When a paper is submitted it is up to the Editor-in-Chief – that’s me! – to assign it to a member of the Editorial Board. Who that is depends on the topic of the paper and on the current availability due to workload. I of course take on some papers myself. I also reject some papers without further Peer Review if they clearer don’t meet  the journal’s criteria of scientific quality, originality, relevance and comprehensibility. I usually run such papers past the Editorial Board before doing such a ‘Desk Reject’.

Once the paper has been assigned, the Editor takes control of the process, inviting referees (usually two) to comment and make recommendations. This is the rate-determining step, as potential referees are often busy. It can take as many as ten declined invitations before we get a referee to agree. Once accepted, a referee is asked to provide a report within three weeks. Sometimes they are quicker than that, sometimes they take longer. It depends on many factors, including the length of the manuscript.

Once all the referee reports are in the Editor can make a decision. Some papers are rejected upon refereeing, and some are accepted with only tiny changes. The most frequent decision is “Revise and Resubmit” – authors are requested to make changes in response to the referee comments. Sometimes these are minor, sometimes they are substantial. We never give a deadline for resubmission.

A resubmitted paper is usually sent to the same referee(s) who reviewed the original. The referees may be satisfied and recommend acceptance, or we go around again.

Once a paper is accepted, the authors are instructed to upload the final, accepted, version to arXiv. It normally takes a day or two to be announced. The article is then passed over from the Peer Review process to the Publication process. As Managing Editor, I make the overlay and prepare the metadata for the final version. This is usually done the same day as the final version appears on arXiv, but sometimes it takes a bit longer to put everything in order. It’s never more than a few days though.

Anyway, here are some “analytics” – it’s weird how anything that includes any quantitative information is called analytics these days to make it sound more sophisticated than it actually is – provided by the Scholastica platform:

These numbers need a little explanation.

The “average days to a decision” figure includes desk rejects as well as all submissions and resubmissions. Suppose a paper is submitted and it then takes 4 weeks to get referee reports and for the Editor to make a “Revise and Resubmit” request. That would count as 28 days. It might take the authors three months to make their revisions and resubmit the paper, but that does not count in the calculation of the “average days to decision” as during that period the manuscript is deemed to be inactive. If the revised version is accepted almost immediately, say after 2 days, then the average days to decision would be (28+2)/2 = 15 days. Also, being an average there are some shorter than 14 days and some much longer.

The acceptance rate is the percentage of papers eventually accepted (even after revision). The figure for ‘total submissions’ includes resubmissions, so the hypothetical paper in the preceding paragraph would add 2 to this total. That accounts for why the total number of papers accepted is not 50% of 388, which is 194; the actual figure is lower, at 105.

Finally, the number of manuscripts “in progress” is currently 23. That includes papers currently going through the peer review process. It does not include papers which are back with the authors for revisions (although it would be reasonable to count those as in progress in some sense).

There we are. I hope this clarifies the situation.

New Publication at the Open Journal of Astrophysics

Posted in OJAp Papers, The Universe and Stuff with tags , , , , , on September 15, 2023 by telescoper

Time to announce yet another new paper at the Open Journal of Astrophysics. This one is hot off the press and was published today (15th September 2023).

The latest paper is the 36th  so far in Volume 6 (2023) and the 101st in all. The authors are Kareem El-Badry (Department of Astronomy, California Institute of Technology, USA), Kevin Burdge (Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, USA), Jan van Roestel (Anton Pannekoek Institute for Astronomy, University of Amsterdam,NL) & Antonio C. Rodriguez (Department of Astronomy, California Institute of Technology, USA).

The primary classification for this paper is Solar and Stellar Astrophysics and its title is “A transiting brown dwarf in a 2 hour orbit”.  The article reports the discovery of a brown dwarf in a very short orbit around a low-mass star with a discussion about the evolution of this orbit probably due to magnetic braking. Amazingly, the entire binary system would fit comfortably inside the Sun (although that’s not actually where it is).

Anyway, here is a screen grab of the overlay of the published version which includes the  abstract:

 

 

You can click on the image of the overlay to make it larger should you wish to do so. You can find the officially accepted version of the paper on the arXiv here.

Three New Publications at the Open Journal of Astrophysics

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , , , , on August 30, 2023 by telescoper

Not unexpectedly because of holidays, August has been rather a quiet month at the Open Journal of Astrophysics, but with people returning to work this week business has picked up again and it’s time to announce the last batch (all published this week).

In fact, this week we have published three papers, which I now present to you here. These take the count in Volume 6 (2023) up to 34 and the total published by OJAp up to 99. Who will be the author(s) of the 100th? We will just have to wait and see! I’ll do a special post for whichever paper wins that honour.

In chronological order, the three papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

First one up is “Bright common envelope evolution requires jets” by Noam Soker of Technion, Haifa in Israel. This is a discussion of the role of jets that a main sequence secondary star launches as it enters a common envelope evolution (CEE) with a primary giant star. The paper was published on 28th August, is just the fifth item in the folder marked Solar and Stellar Astrophysics and can be found here.

Here is a screen grab of the overlay, which includes the abstract:

 

You can find the officially accepted version of the paper on the arXiv here.

The second paper to announce is “Almanac: MCMC-based signal extraction of power spectra and maps on the sphere” by Elena Sellentin (Leiden), Arthur Loureiro (Stockholm); Lorne Whiteway (UCL); Javier Lafaurie (Leiden); Sreekumar Balan (UCL); Malak Olamaie (York); and Andrew Jaffe & Alan Heavens (Imperial).  This presents a new software tool called Almanac , which uses Hamiltonian Monte Carlo sampling to infer the underlying all-sky noiseless maps of cosmic structures, together with their auto- and cross-power spectra.

This one is  in the folder marked Cosmology and Nongalactic Astrophysics. The paper was also published on 28th August 2023 and you can see the overlay here:

 

The accepted version of this paper can be found on the arXiv here.

The last paper of this batch paper is in the Instrumentation and Methods for Astrophysics folder. It is entitled “Neural Network Based Point Spread Function Deconvolution For Astronomical Applications” and the authors are: Hong Wang, Sreevarsha Sreejith, Yuewin, Nesar Ramachandra*, Anze Slosar & Shinjae Yoo, all of the Brookhaven National Laboratory (NY) except * who is at the Argonne National Laboratory (IL), all based in the USA. This paper discusses a neural-network based deconvolution algorithm based on Deep Wiener Deconvolution Network (DWDN) and its performance in an astronomical context.

Here is the overlay:

 

You can find the full text for this one on the arXiv here.

Four New Publications at the Open Journal of Astrophysics

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , , , , , , , , , , , , , on July 29, 2023 by telescoper

The rate of publication at the Open Journal of Astrophysics has now reached the point at which I think I’ll have to limit myself to weekly updates here rather than announcing every paper as it appears. We still announce individual papers on social media of course, meaning Mastodon, Facebook and the platform formerly known as Twitter…

This week we have published four papers which I now present to you here. These four take the count in Volume 6 (2023) up to 31 and the total published by OJAp up to 96. I speculated earlier this year that we might reach 100 before the end of 2023, now it looks certain we will reach the century mark as early as August! It is gratifying to see the range of papers published increasing, with all four of these in different categories.

In chronological order, the four papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

First one up is “M-σ relations across cosmic time” by David Garofalo (1), Damian J. Christian (2), Chase Hames (1), Max North (3), Keegan Thottam (1) & Alisaie Eckelbarger (1). The author affiliations are: (1) Department of Physics, Kennesaw State University, USA; (2) Department of Physics and Astronomy, California State University, Northridge, USA; (3) Department of Information Systems, Kennesaw State University, USA. This is a discussion of the relationship between black hole mass and stellar velocity dispersion discovered in low redshift galaxies and its evolution with cosmic time. The paper was published on 25th July, is in the folder marked Astrophysics of Galaxies and can be found here.

Here is a screen grab of the overlay, which includes the abstract:

You can find the officially accepted version of the paper on the arXiv here.

The second paper to announce is “The fastest stars in the Galaxy” by Kareem El-Badry et al. (21 authors. This one is the fourth item in the folder marked Solar and Stellar Astrophysics and it reports the spectroscopic discovery of 6 new “runaway” stars, probably the surviving members of binary star systems in which one star exploded in a Type 1a supernova. The paper was published on 27th July 2023 and you can see the overlay here:

The accepted version of this paper can be found on the arXiv here.

The next paper is in the Earth and Planetary Astrophysics folder. It is in fact only the second paper we have published in that area. It is entitled “WHFast512: A symplectic N-body integrator for planetary systems optimized with AVX512 instructions” by Pejvak Javaheri & Hanno Rein (University of Toronto, Canada) and Daniel Tamayo (Harvey Mudd College, USA). This paper presents a fast direct N-body integrator for gravitational systems, and demonstrates it using a 40 Gyr integration of the Solar System.

Here is the overlay:

 

You can find the full text for this one on the arXiv here.

Last but by no means least, published yesterday (29th July), we have a paper that asks the question “Can Einstein (rings) surf Gravitational Waves?” by Leonardo Giani, Cullan Howlett and Tamara M. Davis of the University of Queensland, Australia. The primary classification for this one is Cosmology and Nongalactic Astrophysics and it discusses the possible effect(s) of gravitational waves on gravitational lensing observations.

 

You can click on the image of the overlay to make it larger should you wish to do so. You can find the officially accepted version of the paper on the arXiv here.

New Publication at the Open Journal of Astrophysics

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , , , on July 22, 2023 by telescoper

Time to announce yet another new paper at the Open Journal of Astrophysics. This one was published yesterday, on 21st July 2023.

The latest paper is the 27th  so far in Volume 6 (2023) and the 92nd in all. The authors are Sohan Ghodla, Richard Easther, M.M. Briel and J.J. Eldridge, all of the University of Auckland in New Zealand.

The primary classification for this paper is Cosmology and Nongalactic Astrophysics and its title is “Observational implications of cosmologically coupled black holes”.  The paper elucidates some of the consequences of a suggestion that the interaction between black holes and the global properties of space-time underlying explanation for dark energy. The key result is that the existence of cosmologically-coupled black holes implies a much larger rate of black-hole merger events than is observed.

The papers to which this is a response are mentioned here. For reference ,these earlier works were published in The Astrophysical Journal and The Astrophysical Journal Letters. There is also a detailed twitter thread about this paper by Richard Easter, posted when it was submitted as a preprint to the arXiv last month:

 

Anyway, here is a screen grab of the overlay of the published version which includes the  abstract:

 

You can click on the image of the overlay to make it larger should you wish to do so. You can find the officially accepted version of the paper on the arXiv here.

Four New Publications at the Open Journal of Astrophysics

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , , , , on July 19, 2023 by telescoper

Time for an update at the Open Journal of Astrophysics. Owing to a well-deserved holiday by a member of the OJAp team, we were unable to register DOIs and associated metadata for a couple of weeks so refrained from announcing new papers during this period while other functions of the journal continued. Anyway, this week we have caught up with the backlog of four papers, which I now present to you here, all published on 17th July 2023. These four take the count in Volume 6 (2023) up to 26 and the total published by OJAp up to 91.

In no particular order, the four papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

“Large-scale power loss in ground-based CMB mapmaking” by Sigurd Naess (Oslo, Norway) and Thibaut Louis (Saclay, France). This one is a discussion of the possible biases introduced by using a data model to create sky maps of CMB temperature fluctuations and is in the folder marked Instrumentation and Methods for Astrophysics.

Here is a screen grab of the overlay, which includes the abstract:

 

 

You can find the officially accepted version of the paper on the arXiv here.

The primary classification for the next paper paper is Cosmology and Nongalactic Astrophysics and its title is “”The cumulant generating function as a novel observable to cumulate weak lensing information”. The authors are Aoife Boyle (Saclay, France), Alexandre Barthelemy (LMU, Germany), Sandrine Codis (Saclay, France), Cora Uhlemann (Newcastle, UK) & Oliver Friedrich (LMU, Germany). The paper explores the use of the cumulant generating function (CGF), from which the probability density function (PDF) can be obtained, in the context of weak gravitational lensing information.

You can click on the image of the overlay to make it larger should you wish to do so. You can find the officially accepted version of the paper on the arXiv here.

Also in the folder marked Cosmology and Nongalactic Astrophysics is the third paper “Cosmology with 6 parameters in the Stage-IV era: efficient marginalisation over nuisance parameters” by B. Hadzhiyska (Berkeley, USA), K. Wolz (Trieste, Italy), S. Azzoni (Oxford, UK; Tokyo, Japan), D. Alonso (Oxford, UK), C. García-García (Oxford, UK), J. Ruiz-Zapatero (Oxford, UK) and A. Slosar (Tokyo, Japan). This presents an efficient analytical method to speed up marginalization over nuisance parameters introduced to model systematic effects in large-scale structure data.

Here is a screen grab of the overlay which includes the abstract:

 

You can find the officially accepted version of the paper on the arXiv here.

The final paper in this quartet, also in Cosmology and Nongalactic Astrophysics, is “Modeling the Galaxy Distribution in Clusters using Halo Cores” by D. Korytov, E. Rangel, L. Bleem, N. Frontiere, S. Habib, K. Heitmann, J. Hollowed, and A. Pope (all of the Argonne National Laboratory, USA). This presents a new method to speed up numerical simulations using a method of simplifying the handling of substructure in galaxy clusters using halo ‘core-tracking’.

The overlay of this one is here:

 

You can find the officially accepted version of the paper on the arXiv here.

New Publication at the Open Journal of Astrophysics

Posted in OJAp Papers, The Universe and Stuff with tags , , , , , on May 26, 2023 by telescoper

It’s time to announce yet another new paper at the Open Journal of Astrophysics. This one was published yesterday (25th May).

The latest paper is the 18th paper so far in Volume 6 (2023) and the 83rd in all. With this one we have now published more papers in 2023 than we did in all of last year. With significantly less than half the year gone, and a large number of papers in the pipeline, I think it’s quite likely we will exceed a total of 100 papers by the end of 2023.

The primary classification for this paper is Cosmology and Nongalactic Astrophysics and its title is “The Effect of Splashback on Weak Lensing Mass Estimates of Galaxy Clusters and Groups”. For the uninitiated  “Splashback” of infalling material produces features in the radial density profile of galaxy clusters. This paper discusses the effect of this on cluster masses derived from weak lensing measurements.

The authors, most of whom have multiple affiliations, are: Yuanyuan Zhang (NOIRLab, Tucson, AZ, USA), Susmita Adhikari (IISER, Pune, India), Matteo Costanzi (Univ. Trieste, Italy) and Josh Frieman, Jim Annis & Chihway Chang (Univ. Chicago, IL, USA).

Here is a screen grab of the overlay which includes the  abstract:

 

 

You can click on the image of the overlay to make it larger should you wish to do so. You can find the officially accepted version of the paper, along with all other astrophysics and cosmology research papers worth reading, on the arXiv here.