{"paper":{"title":"Blazhko-type modulation in the double-mode RR Lyrae stars of the OGLE Galactic bulge collection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Udalski, D. Skowron, G. Pietrzy\\'nski, I. Soszy\\'nski, J. Skowron, K. Ulaczyk, {\\L}. Wyrzykowski, M.K. Szyma\\'nski, P. Mr\\'oz, P. Pietrukowicz, R. Poleski, R. Smolec, S. Koz{\\l}owski","submitted_at":"2014-11-10T14:56:52Z","abstract_excerpt":"We present the analysis of Blazhko-type modulation in double-mode RR Lyrae (RRd) stars found in the OGLE photometry of the Galactic bulge. Modulation is detected in 15 stars. Most of them have non-typical period ratio of the radial modes. In the Petersen diagram, at a given period of the fundamental mode, they are located significantly below or above the sequence formed by the majority of RRd stars.\n  Multi-periodic modulation is very frequent; two or three modulation periods are detected in 8 stars. Modulation periods vary from ~20 to more than 300 days. Radial mode amplitudes can be modulate"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.2447","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"}