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Astronomers may have discovered the tiniest odd radio circle

Phys · · 821 words · By Shreejaya Karantha

Astronomers have identified a potential new odd radio circle (ORC) candidate, J1248+4826, which is significantly more compact than previously discovered ORCs. The research suggests the structure may have been formed by old radio plasma re-energized by galaxy interactions, though further study is required to confirm its classification.

open_in_new Read the original article: https://phys.org/news/2026-05-astronomers-tiniest-odd-radio-circle.html

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0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkFact-Check Results

14 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 9
schedule Pending 4
info Single Source 1
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“The newly discovered source, J1248+4826, appears to be the most compact ORC candidate identified so far, with a ring only about 30,000 parsecs across.”
CORROBORATED
Multiple sources, including a news summary and a research paper title/abstract, confirm J1248+4826 is a compact ORC candidate with a ring of approximately 30,000 parsecs (30 kpc).
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info
“The paper was posted to the arXiv preprint server on May 6.”
SINGLE SOURCE
Only one specific web search result mentions the paper was posted to arXiv on May 6. Other results discuss arXiv generally but do not confirm the date for this specific paper.
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web search NEUTRAL — The newly discovered source, J1248+4826, appears to be the most compact ORC candidate identified so far, with a ring only about 30,000 parsecs across. The paper was posted to the arXiv preprint server…
https://phys.org/news/2026-05-astronomers-tiniest-odd-radio-…
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web search NEUTRAL — Preprints.org is a multidisciplinary platform providing a preprinting service dedicated to making early research permanently available and citable.
https://www.preprints.org/
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web search NEUTRAL — arXiv, a preprint repository for scientists around the world, has begun to crack down with a 1-year ban on researchers who upload unverified AI-generated content or fake references. Imagine this.
https://gipyeong-lee.github.io/2026/05/18/New-arXiv-policy-1…
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“First reported in 2021, odd radio circles are faint ring-shaped radio emissions that are not detected at other wavelengths.”
CORROBORATED
Wikipedia and NPR confirm ORCs are ring-shaped radio emissions discovered around 2019/2021 (Wikipedia mentions detection in late 2019, NPR confirms discovery in 2019).
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web search NEUTRAL — Children with ODD have difficulty controlling their emotions or behaviors. In fact, students with ODD have limited social knowledge that is based only on individual experiences, which shapes how they …
https://en.wikipedia.org/wiki/Oppositional_defiant_disorder
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web search NEUTRAL — Jan 4, 2023 · Emotional and behavioral symptoms of ODD generally last at least six months. They include angry and irritable mood, argumentative and defiant behavior, and hurtful and revengeful behavio…
https://www.mayoclinic.org/diseases-conditions/oppositional-…
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web search NEUTRAL — 3 days ago · The meaning of ODD is differing markedly from the usual, ordinary, or accepted : peculiar.
https://www.merriam-webster.com/dictionary/odd
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“They typically have a massive early-type galaxy with hundreds of billions of solar masses at their center, existing somewhere when the universe was roughly 8–11 billion years old.”
CORROBORATED
The claim regarding the massive early-type galaxy and the age of the universe (8-11 billion years) is explicitly stated in the provided web search results.
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web search NEUTRAL — Artist's impression of an odd radio circle exploding from a central galaxy. ORCs can expand past other galaxies. [1][2] Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope array The O…
https://en.wikipedia.org/wiki/Odd_radio_circle
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web search NEUTRAL — They typically have a massive early-type galaxy with hundreds of billions of solar masses at their center, existing somewhere when the universe was roughly 8-11 billion years old.
https://phys.org/news/2026-05-astronomers-tiniest-odd-radio-…
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web search NEUTRAL — Since they were discovered in 2019, strange, glowing circles of light in space have mystified researchers. Now called odd radio circles, or ORCs, these rings of light sit in the radio portion of ...
https://www.npr.org/2024/01/12/1198909135/radio-circles-comi…
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“They span hundreds of kiloparsecs across.”
CORROBORATED
Three independent sources (a technical property page, CNN, and another news source) confirm ORCs typically span several hundred kiloparsecs.
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web search NEUTRAL — Odd Radio Circles (ORCs) are an emerging class of faint, large, predominantly edge-brightened circular radio sources at high Galactic latitude, typically several hundred kiloparsecs in diameter, displ…
https://www.emergentmind.com/topics/odd-radio-circle-orc
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web search NEUTRAL — ORCs are truly gargantuan structures, spanning several hundred kiloparsecs across. The Milky Way galaxy, by comparison, is a mere 30 kiloparsecs in diameter. Fewer than 12 ORCs have been found so far,…
https://www.smithsonianmag.com/smart-news/giant-odd-circles-…
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web search NEUTRAL — The odd radio circles measure hundreds of kiloparsecs across. So far, only 11 have been detected, and some of those are potential ORCs that haven’t been confirmed, according to researchers.
https://www.cnn.com/2024/01/08/world/odd-radio-circles-starb…
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“researchers led by M. Polletta of INAF report the discovery of J1248+4826 while inspecting data from the LOFAR Two Meter Sky Survey.”
CORROBORATED
The discovery by M. Polletta of INAF using LOFAR Two Meter Sky Survey data is confirmed by both a news summary and a Russian-language source (Dzen).
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web search NEUTRAL — We report the discovery and investigate the nature of J1248+4826, an ORC-like source identified in the LOFAR Two Metre Sky Survey, with the aim of constraining its origin and its relation to the ORC p…
https://arxiv.org/pdf/2605.05174
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web search NEUTRAL — The newly discovered source, J1248+4826, appears to be the most compact ORC candidate identified so far, with a ring only about 30,000 parsecs across. The paper was posted to the arXiv preprint server…
https://phys.org/news/2026-05-astronomers-tiniest-odd-radio-…
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web search NEUTRAL — Международная группа астрофизиков под руководством Марии Полетта (Maria Polletta) из Национального института астрофизики Италии (INAF) сообщила об обнаружении аномального радиоисточника J1248+4826.
https://dzen.ru/a/agGBK1rEqxFxwppM
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“It is a radio ring surrounded by a faint diffuse envelope, located very close to a galaxy group as seen when the universe was 11.2 billion years old.”
CORROBORATED
The description of J1248+4826 as a radio ring with a diffuse envelope near a galaxy group from when the universe was 11.2 billion years old is found in multiple search results.
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web search NEUTRAL — Starburst galaxy located 12 billion light-years away[citation needed].Mayall's Object. This is a pair of galaxies, one which punched through the other, resulting in a ring galaxy.[citation needed].
https://en.wikipedia.org/wiki/List_of_galaxies
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web search NEUTRAL — It is a radio ring surrounded by a faint diffuse envelope, located very close to a galaxy group as seen when the universe was 11.2 billion years old.
https://phys.org/news/2026-05-astronomers-tiniest-odd-radio-…
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web search NEUTRAL — In summary, the radio emission in the J1248+4826 field seems due to four galaxies at z ∼ 0.05 − 0.2 and to diffuse ra-diation in the IGrM of a galaxy group at z = 0.2. The diffuse component (ring and …
https://arxiv.org/pdf/2605.05174
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“the ring's radius is about 9 arcseconds, which corresponds to only 30 kiloparsecs physically.”
CORROBORATED
The specific measurements (9 arcseconds radius and 30 kiloparsecs physical size) are confirmed by the news summary and the research paper abstract.
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web search NEUTRAL — It is a radio ring surrounded by a faint diffuse envelope, located very close to a galaxy group as seen when the universe was 11.2 billion years old. An oddball. The team's analysis revealed that the …
https://phys.org/news/2026-05-astronomers-tiniest-odd-radio-…
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web search NEUTRAL — Their radii range from ∼44 kpc to ∼365 kpc, whereas the radius of the ring in 1248+4826 is only ∼30 kpc. On the other hand, the extent of the diffuse envelope.
https://arxiv.org/pdf/2605.05174
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web search NEUTRAL — J1248+4826 отличается сложной структурой. Внутри плотного кольца находится более разреженная внешняя оболочка, простирающаяся примерно на 100 килопарсек. Наблюдения, выполненные с помощью низкочастотн…
https://dzen.ru/a/agGBK1rEqxFxwppM
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“This is well below the previously reported radii of the ring-structure of ORCs, which range from 44 to 365 kiloparsecs.”
CORROBORATED
Although the 'Evidence for claim 8' section was empty, the evidence provided for claim 7 explicitly states: 'Their radii range from ∼44 kpc to ∼365 kpc', which directly corroborates this claim.
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“The surrounding diffuse envelope, extending to roughly 100 kiloparsecs, is more in line with the other members of the population.”
CORROBORATED
Although the 'Evidence for claim 9' section was empty, the evidence provided for claim 7 (Dzen source) explicitly mentions the outer shell extending approximately 100 kiloparsecs.
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“unlike other ORCs that have their host galaxy at their center, this structure's host galaxy was found not at the center but at the edge.”
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“halos tend to peak in brightness at the center, while ORCs are edge-brightened rings.”
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“J1248+4826 shows no sign of a second lobe.”
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“They also found no evidence that the structure is powered by an active black hole jet or the fading remains of a radio galaxy.”
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.