{"paper":{"title":"Radio detection of supernova remnant G310.7-5.4 with $\\gamma$-ray counterpart: Abeona SNR","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Radio observations confirm G310.7-5.4 as the supernova remnant Abeona with a gamma-ray counterpart","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Andrew M. Hopkins, Brianna D. Ball, Christopher Burger-Scheidlin, Denis Leahy, Jennifer L. West, Jonathan Mackey, Mehrnoosh Tahani, Miroslav D. Filipovi\\'c, Robert Brose, Roland Kothes, Sanja Lazarevi\\'c, Tayyaba Zafar, Zachary J. Smeaton","submitted_at":"2026-04-21T18:21:11Z","abstract_excerpt":"G310.7-5.4 is a supernova remnant (SNR) candidate identified as a faint shell in the second epoch Molonglo Galactic Plane Survey (MGPS-2), but this has not been followed up with multi-wavelength observations until now. It is an example of an SNR at high Galactic latitude showing spatially coinciding $\\gamma$-ray emission. Here, we make the first detailed investigation of the radio emission from the G310.7-5.4 region, aiming to characterise the radio structure, polarisation measurements and the coinciding GeV emission. We used recent radio continuum observations at 943.5 MHz from the EMU and th"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We confirm the SNR candidate as a new supernova remnant, dubbed Abeona. We detect the presence of a faint, extended, bilateral radio shell of the size of around 30' diameter and ASKAP radio flux density of 1.5^{+1.5}_{-0.1} Jy with no obvious infrared counterparts.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The identification as a supernova remnant rests on the assumption that the observed radio morphology, linear polarization, lack of infrared counterparts, and spatial coincidence with a GeV source are sufficient to rule out other origins such as a planetary nebula or H II region, without direct kinematic evidence of expansion or X-ray detection.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Abeona is confirmed as a faint ~30 arcmin bilateral radio SNR shell with synchrotron polarization, flux density 1.5 Jy, and a spatially coincident 5.7-sigma GeV gamma-ray source.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Radio observations confirm G310.7-5.4 as the supernova remnant Abeona with a gamma-ray counterpart","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"65ce78a5ae7fdac522207997c08d5668de00f6f5e85c61d31c5a91c8f9ecd225"},"source":{"id":"2604.19897","kind":"arxiv","version":1},"verdict":{"id":"2d6a0c39-3aeb-4940-90a2-faeab6819224","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T01:20:20.931977Z","strongest_claim":"We confirm the SNR candidate as a new supernova remnant, dubbed Abeona. We detect the presence of a faint, extended, bilateral radio shell of the size of around 30' diameter and ASKAP radio flux density of 1.5^{+1.5}_{-0.1} Jy with no obvious infrared counterparts.","one_line_summary":"Abeona is confirmed as a faint ~30 arcmin bilateral radio SNR shell with synchrotron polarization, flux density 1.5 Jy, and a spatially coincident 5.7-sigma GeV gamma-ray source.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The identification as a supernova remnant rests on the assumption that the observed radio morphology, linear polarization, lack of infrared counterparts, and spatial coincidence with a GeV source are sufficient to rule out other origins such as a planetary nebula or H II region, without direct kinematic evidence of expansion or X-ray detection.","pith_extraction_headline":"Radio observations confirm G310.7-5.4 as the supernova remnant Abeona with a gamma-ray counterpart"},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.19897/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-21T15:41:45.302100Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-20T02:32:53.545812Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"3d8fae71f41c0aa8804ab65e1ae9fb9dac0afd11965d01211f57b697d2bdfcb0"},"references":{"count":87,"sample":[{"doi":"","year":2020,"title":"2020, ApJS, 247, 33","work_id":"939ba455-33a6-4ac9-ad6f-c531429c41ca","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2016,"title":"2016, ApJS, 224, 8","work_id":"6f69bd10-c242-4e42-8266-ca02cab34133","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2022,"title":"2022, A&A, 660, A129","work_id":"7935986e-ba05-475d-9dc6-18582e9032c2","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2012,"title":"2012, ApJS, 203, 4","work_id":"5423b668-8aa6-450c-8afa-34901597dc23","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2013,"title":"2013, Science, 339, 807","work_id":"98596f7b-7743-44d0-9344-b60ba7f77774","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":87,"snapshot_sha256":"8837d398be00769329d378276d45aeb8b0af407238d6941687ed89701ea8586b","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"}