Universal coordinates for Schwarzschild black holes

W G Unruh

Universal coordinates for Schwarzschild black holes

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1401.3393 v1 pith:7DL3SYSH submitted 2014-01-15 gr-qc

W G Unruh This is my paper · ORCID

classification gr-qc

keywords coordinatesschwarzschildblackcomparedconstantcoordinateextendedfeatures

verification ladder T0 review T1 audit T2 compute T3 formal

0 comments

read the original abstract

A variety of historical coordinates in which the Schwarzschild metric is regular over the whole of the extended spacetime are compared and the hypersurfaces of constant coordinate are graphically presented. While the Kruscal form (one of the later forms) is probably the simplest, each of the others has some interesting features.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Modified Fronsdal coordinates for maximally extended Schwarzschild spacetime
gr-qc 2025-10 accept novelty 4.0 of 10

A new 'modified Fronsdal' coordinate system covers the entire maximally extended Schwarzschild spacetime with an explicit areal radius, r = r_s(1 + χ² − η²), at the cost of curved light-cone lines.

Pith tools