| ORCID | https://orcid.org/0000-0002-5535-2850 |
| Work Page | https://www.maynoothuniversity.ie/people/peter-coles |
| Blog (Personal) | https://telescoper.blog/about |
| Pronouns | He/him/his |
| ORCID | https://orcid.org/0000-0002-5535-2850 |
| Work Page | https://www.maynoothuniversity.ie/people/peter-coles |
| Blog (Personal) | https://telescoper.blog/about |
| Pronouns | He/him/his |
Winding Down for Easter
When I was a lad, back in England, the name for the Thursday before Good Friday was Maundy Thursday. That term isn't used here in Ireland, where it seems to be known as Holy Thursday. Anyway, Maynooth University is closed tomorrow (Good Friday) but not today (Holy Thursday). Although today is not an official holiday, some campus facilities are in fact closed - including Pugin Hall, where I often have lunch.
The first Day’s Night had come – Emily Dickinson
The first Day's Night had come—And grateful that a thingSo terrible—had been endured—I told my Soul to sing—She said her Strings were snapt—Her Bow—to Atoms blown—And so to mend her—gave me workUntil another Morn—And then—a Day as hugeAs Yesterdays in pairs,Unrolled its horror in my face—Until it blocked my eyes—
http://telescoper.blog/2026/04/01/the-first-days-night-had-come-emily-dickinson/
New Publication at the Open Journal of Astrophysics: "The Growth of Dust in Galaxies in the First Billion Years with Applications to Blue Monsters" by Desika Narayanan (U. Florida, USA) and 11 others based in the USA and Europe.

By Desika Narayanan, Paul Torrey & 10 more. A simulation-based study of dust accumulation in early galaxies via supernovae production and rapid growth on tiny dust grains, with local density and grain size being important factors.
The Hitchhiker’s Guide to the Swampland Published
Regular readers of this blog might remember that last year I did a post about a very comprehensive review article which had appeared on arXiv with the title Hitchhiker’s Guide to the Swampland: The Cosmologist’s Handbook to the string-theoretical Swampland Programme. The article is by Kay Lehnert (who happens to be my PhD student). Well, that paper was published…
http://telescoper.blog/2026/03/31/the-hitchhikers-guide-to-the-swampland-published/
Three papers published this morning at @OJ_Astro bring the first quarter of 2026 to a close on a total of 70 articles.
Using my sophisticated prediction software I estimate that the total by year end will be around 280...
New Publication at the Open Journal of Astrophysics: "Differentiable Stochastic Halo Occupation Distribution with Galaxy Intrinsic Alignments" by Sneh Pandya and Jonathan Blazek (Northeastern U., USA)

By Sneh Pandya, Jonathan Blazek. Introducing diffHOD-IA, a differentiable model for galaxy population analysis that incorporates intrinsic alignments and halo occupation distribution. It's validated against existing models and can be used in next-generation weak-lensing analyses.
New Publication at the Open Journal of Astrophysics: "Validation of the DESI-DR1 3x2-pt analysis: scale cut and shear ratio tests" by Ni Putu Audita Placida Emas (Swinburne University of Technology, Australia) and an international cast of 56 others.

By Ni Putu Audita Placida Emas, A. Porredon & 55 more. This study validates the combined analysis of galaxy clustering and weak gravitational lensing data from various surveys, ensuring accurate tests of the standard cosmological model using future Stage-IV surveys