{"paper":{"title":"Einstein@Home Discovery of a PALFA Millisecond Pulsar in an Eccentric Binary Orbit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"A. Brazier, A. G. Lyne, A. Venkataraman, B. Allen, B. Knispel, B. Machenschalk, B. W. Stappers, C. Aulbert, C. Karako-Argaman, C. Patel, D. R. Lorimer, E. Madsen, F. A. Jenet, F. Camilo, F. Cardoso, F. Crawford, H.-B. Eggenstein, H. Fehrmann, I. H. Stairs, J. K. Swiggum, J. M. Cordes, J. S. Deneva, J. van Leeuwen, J. W. T. Hessels, K. Stovall, L. G. Spitler, M. A. McLaughlin, O. Bock, P. C. C. Freire, P. Lazarus, P. Scholz, R. Ferdman, R. Lynch, R. S. Wharton, S. Bogdanov, S. Chatterjee, S. M. Ransom, V. M. Kaspi, W. W. Zhu, X. Siemens","submitted_at":"2015-04-14T20:00:50Z","abstract_excerpt":"We report the discovery of the millisecond pulsar (MSP) PSR J1950+2414 ($P=4.3$ ms) in a binary system with an eccentric ($e=0.08$) 22-day orbit in Pulsar ALFA survey observations with the Arecibo telescope. Its companion star has a median mass of 0.3 $M_\\odot$ and is most likely a white dwarf. Fully recycled MSPs like this one are thought to be old neutron stars spun-up by mass transfer from a companion star. This process should circularize the orbit, as is observed for the vast majority of binary MSPs, which predominantly have orbital eccentricities $e < 0.001$. However, four recently discov"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.03684","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"}