{"paper":{"title":"BlackHoleCam: fundamental physics of the Galactic center","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"A. Grenzebach, A. Zhidenko, C. Brinkerink, C. Goddi, C. M. Fromm, C. M\\\"uller, E. Ros, F. Eisenhauer, F. Roelofs, G. Desvignes, H. Falcke, H. J. van Langevelde, H. Olivares, I. van Bemmel, J. R. J. Davelaar, K. Liu, K. Schuster, L. Rezzolla, M. De Laurentis, M. Jan{\\ss}en, M. Kramer, M. Moscibrodzka, N. Wex, O. Pfuhl, O. Porth, P. Torne, R. Deane, R. Eatough, R. Fraga-Encinas, R. Konoplya, R. Laing, R.-S. Lu, R. Tilanus, S. Gillessen, S. Issaoun, T. Bronzwaer, T. P. Krichbaum, Y. Mizuno, Z. Younsi","submitted_at":"2016-06-28T20:41:40Z","abstract_excerpt":"Einstein's General Theory of Relativity (GR) successfully describes gravity. The most fundamental predictions of GR are black holes (BHs), but in spite of many convincing BH candidates in the Universe, there is no conclusive experimental proof of their existence using astronomical observations in the electromagnetic spectrum. Are BHs real astrophysical objects? Does GR hold in its most extreme limit or are alternatives needed? The prime target to address these fundamental questions is in the center of our own Galaxy, which hosts the closest and best-constrained supermassive BH candidate in the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.08879","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}