{"paper":{"title":"Multiwavelength Analysis of PSR J0437-4715 with Pulse Profile Modeling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Multi-wavelength analysis constrains the mass of PSR J0437-4715 to 1.38 solar masses and its radius to 13.25 km.","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Ang Li, Fangjun Lu, Hua Feng, Juan Zhang, Liqiang Qi, Mingyu Ge, Shijie Zheng, Shuang-Nan Zhang, Weiwei Xu","submitted_at":"2026-05-06T20:37:59Z","abstract_excerpt":"We present a multi-wavelength analysis of the nearby millisecond pulsar PSR J0437--4715, combining Hubble Space Telescope (HST) far-ultraviolet, ROSAT soft X-ray, and XMM-Newton X-ray data, to model its broadband emission and energy-resolved pulse profiles, and infer key stellar parameters via Bayesian inference. The broadband emission includes cold thermal, hot thermal, and non-thermal components: cold bulk surface emission is modeled with a non-magnetized partially-ionized hydrogen atmosphere; hot-spot emission adopts the pulse profile modeling technique with a non-magnetized fully-ionized h"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"the joint multi-instrument analysis yields a statistically viable and radio-consistent solution with a gravitational mass of 1.38±0.03 M⊙ and an equatorial circumferential radius of 13.25−0.35+0.34 km (68% confidence intervals). The hot-spot geometry consists of two spherical caps with uniform temperature distributions.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that non-magnetized partially-ionized and fully-ionized hydrogen atmosphere models accurately describe the cold and hot thermal emission, combined with the informative prior on hot-spot geometry from radio polarization data.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Joint multi-wavelength analysis of PSR J0437-4715 yields neutron star mass 1.38 solar masses and equatorial radius 13.25 km with two uniform-temperature hot spots at colatitudes of approximately 130 and 9 degrees.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Multi-wavelength analysis constrains the mass of PSR J0437-4715 to 1.38 solar masses and its radius to 13.25 km.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"1ab87f2e748065b88a66c93816005df0c6591e5a2f39342a288f2e9f138780a7"},"source":{"id":"2605.05429","kind":"arxiv","version":2},"verdict":{"id":"964f8043-75b2-407e-934e-b552c4e05999","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-08T15:33:08.751356Z","strongest_claim":"the joint multi-instrument analysis yields a statistically viable and radio-consistent solution with a gravitational mass of 1.38±0.03 M⊙ and an equatorial circumferential radius of 13.25−0.35+0.34 km (68% confidence intervals). The hot-spot geometry consists of two spherical caps with uniform temperature distributions.","one_line_summary":"Joint multi-wavelength analysis of PSR J0437-4715 yields neutron star mass 1.38 solar masses and equatorial radius 13.25 km with two uniform-temperature hot spots at colatitudes of approximately 130 and 9 degrees.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that non-magnetized partially-ionized and fully-ionized hydrogen atmosphere models accurately describe the cold and hot thermal emission, combined with the informative prior on hot-spot geometry from radio polarization data.","pith_extraction_headline":"Multi-wavelength analysis constrains the mass of PSR J0437-4715 to 1.38 solar masses and its radius to 13.25 km."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.05429/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_title_agreement","ran_at":"2026-05-19T20:31:19.734916Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T13:35:21.387594Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"36e7e4f11259468e41a81fa8e1ccb25dc225a6e1cd2181a5539f11c70e615576"},"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"}