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Essential Radio Astronomy by James J. Condon and Scott M. Ransom by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Official course and author record: science.nrao.edu/opportunities/courses/era
NRAO-hosted authored text. Equations (4.57)–(4.60) define emission measure, radio optical depth and optically thick/thin observables. The course page identifies both authors and the 12 March 2016 preface date.
NACO User Manual by European Southern Observatory by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Document VLT-MAN-ESO-14200-2761. The inspected title page prints Issue 102, dated 4 July 2018, despite the URL suffix v103. Institutionally prepared with the instrument operations team. §§3.1–3.2 are printed p.13; §4.3 is printed p.19. This manual supplies physical and instrumental explanations, not an assertion of 2016 operating performance.
Institutional technical explanation of single- and multiple-conjugate correction, finite-altitude laser guide stars, cone effect and tip-tilt limitations. Related guide-star overview: www.eso.org/sci/facilities/develop/lgsf/overview.html
Version 2.0; also called the ABC Guide. Institutional technical source, ASCA Guest Observer Facility, NASA/Goddard. Section 4, SIS Issues: heasarc.gsfc.nasa.gov/docs/asca/abc/node5.html
§4.7 gives the Fano factor, read-noise contribution and FWHM energy-resolution expression; the numerical detector examples are ASCA-specific, not universal CCD specifications.
Section 7, SIS, in the institutional ASCA technical description, Appendix E. Describes silicon electron-hole generation at approximately 3.65 eV per pair, clocked transfer, collection losses and imaging spectroscopy.
Heating and Cooling of HII regions by Ian Czekala by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Lecture on the event-by-event energy balance of photoionized nebulae. The photoionization section weights heating by absorbed photon energy above threshold; the recombination section uses the mean kinetic energy of captured electrons. iancze.github.io/courses/astro542/lectures/23-hii-heating-cooling/
A luminous quasar at a redshift of z = 7.085 by Daniel J. Mortlock and collaborators by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Original spectroscopic discovery report for the high-redshift quasar and its inferred massive black hole. Published in Nature474,616–619. Primary preprint: arxiv.org/abs/1106.6088 . Discovery-paper parameters are not substituted for a separately specified examination age model.
Galactic Bridges and Tails by Alar Toomre and Juri Toomre by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Original restricted-particle calculations of tidal structures in close galaxy encounters. SectionII constructs examples with rotating particle rings and nearly parabolic companion orbits; the model deliberately neglects disc self-gravity. Original paper: articles.adsabs.harvard.edu/pdf/1972ApJ...178..623T .
Core condensation in heavy halos by Simon D. M. White and Martin J. Rees by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Original two-stage galaxy-formation model coupling non-dissipative gravitational clustering to gas cooling and condensation. Full title includes the subtitle A two-stage theory for galaxy formation and clustering. DOI: doi.org/10.1093/mnras/183.3.341 . Primary abstract: ui.adsabs.harvard.edu/abs/1978MNRAS.183..341W/abstract .
Earth Fact Sheet by National Aeronautics and Space Administration by
Codex 0 Created 2026-10-20 Updated 2026-11-05
The bulk-parameters table gives the terrestrial standard gravitational parameter and volumetric mean radius . The orbital-parameters table distinguishes the sidereal day, , from the -hour solar day. Use the problem's own radius when it supplies one.
NIST Guide to the SI, Footnotes by National Institute of Standards and Technology by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Footnote 23 records the conventional standard acceleration .
Planck 2015 inflation constraints by Planck Collaboration by
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Primary analysis of the 2015 cosmic microwave background data and inflationary implications. The original February2015 version reports a red scalar tilt and upper limits on tensors; it already disfavors a simple quadratic potential relative to lower-tensor alternatives. Original version: arxiv.org/abs/1502.02114v1 . Full title: Planck2015results.XX.Constraints on inflation.
Planck 2015 cosmological parameters by Planck Collaboration by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Primary cosmological-parameter analysis under specified model and data combinations. The original February2015 abstract gives flat-model temperature/lensing estimates near and . Original version: arxiv.org/abs/1502.01589v1 . Full title: Planck2015results.XIII.Cosmological parameters.
The relationship between bathymetry and gravity in the Atlantic Ocean by Dan McKenzie and Carl Bowin by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Journal of Geophysical Research 81, 1903–1915 (1976). Primary ship-track gravity/bathymetry spectral analysis. doi.org/10.1029/JB081i011p01903
Magnetic Anomalies Over Oceanic Ridges by F. J. Vine and D. H. Matthews by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Nature 199, 947–949 (1963). Original remanent-magnetization and seafloor-spreading interpretation. doi.org/10.1038/199947a0 courses.washington.edu/ess502/Vine_Matthews.pdf
Space geodesy constrains ice age terminal deglaciation: The global ICE-6G_C (VM5a) model by W. R. Peltier and others by
Codex 0 Created 2026-10-20 Updated 2026-11-05
A New Method for Determining First-Motion Focal Mechanisms by Jeanne L. Hardebeck and Peter M. Shearer by
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Bulletin of the Seismological Society of America 92, 2264–2276 (2002). Primary method propagating polarity, location and velocity-model uncertainty. doi.org/10.1785/0120010200 igppweb.ucsd.edu/~shearer/mahi/PDF/78SSA02a.pdf
Preliminary reference Earth model by Adam M. Dziewonski and Don L. Anderson by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Physics of the Earth and Planetary Interiors 25, 297–356 (1981). Joint inversion of travel times, normal modes, mass and inertia for reference Earth structure. doi.org/10.1016/0031-9201(81)90046-7 lweb.cfa.harvard.edu/~lzeng/papers/PREM.pdf
Lepton number as the fourth color by Jogesh Pati and Abdus Salam by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Physical Review D10, pp. 275–289. The conventional local subgroup appears in equation (2), printed p276; the larger global structure is discussed separately.
Results on neutrinoless double beta decay of 76Ge from GERDA Phase I by the GERDA Collaboration by
Codex 0 Created 2026-10-20 Updated 2026-11-05
Primary collaboration report. Physical Review Letters111,122503. Full paper: arxiv.org/pdf/1307.4720
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.Figure 3. Visual Studio Code extension installation.Figure 5. . You can also edit articles on the Web editor without installing anything locally. Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension. - Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact





