{"paper":{"title":"Dips and eclipses in the X-ray binary Swift J1858.6-0814 observed with NICER","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"C. Knigge, C. Malacaria, D. Altamirano, D. J. K. Buisson, D. J. Walton, F. Fogantini, F. Tombesi, F. Vincentelli, J. A. Tomsick, J. Hare, J. Homan, J. van den Eijnden, K. Gendreau, M. Armas Padilla, M. D\\'iaz Trigo, M. Mendez, M. Ng, M. \\\"Ozbey Arabac{\\i}, N. Castro Segura, N. Degenaar, P. A. Charles, P. Bult, P. Gandhi, R. Remillard, T. E. Strohmayer, T. Mu\\~noz Darias, Z. Arzoumanian","submitted_at":"2021-03-23T18:35:44Z","abstract_excerpt":"We present the discovery of eclipses in the X-ray light curves of the X-ray binary Swift J1858.6-0814. From these, we find an orbital period of $P=76841.3_{-1.4}^{+1.3}$ s ($\\approx21.3$ hours) and an eclipse duration of $t_{\\rm ec}=4098_{-18}^{+17}$ s ($\\approx1.14$ hours). We also find several absorption dips during the pre-eclipse phase. From the eclipse duration to orbital period ratio, the inclination of the binary orbit is constrained to $i>70^\\circ$. The most likely range for the companion mass suggests that the inclination is likely to be closer to this value than $90^\\circ$. The eclip"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.12787","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2103.12787/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}