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Webinar: Weighing masterclass: Understanding measurement uncertainty

Webinar: Weighing masterclass: Understanding measurement uncertainty
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Martin Ross , European Association Of National Metrology Institutes , International Organization Of Legal Metrology , Calibration Guideline , European Association , National Metrology Institutes , Pheur Chapter , International Organization , Legal Metrology ,

Precessing jet nozzle connecting to a spinning black hole in M87

The nearby radio galaxy M87 offers a unique opportunity to explore the connections between the central supermassive black hole and relativistic jets. Previous studies of the inner region of M87 revealed a wide opening angle for the jet originating near the black hole1–4. The Event Horizon Telescope resolved the central radio source and found an asymmetric ring structure consistent with expectations from general relativity5. With a baseline of 17 years of observations, there was a shift in the jet’s transverse position, possibly arising from an 8- to 10-year quasi-periodicity3. However, the origin of this sideways shift remains unclear. Here we report an analysis of radio observations over 22 years that suggests a period of about 11 years for the variation in the position angle of the jet. We infer that we are seeing a spinning black hole that induces the Lense–Thirring precession of a misaligned accretion disk. Similar jet precession may commonly occur in other active ....

M Mosquera Cuesta , Physikalische Zeitschrift , Gouveia Dal Pino , Einsteinschen Gravitationstheorie , Horizon Telescope , East Asia , Event Horizon , Calibration Guideline , Reduction Guideline , Information Handling , Historical Vistas , Kluwer Academic Publishers , Space Telescope ,

Weighing masterclass: Understanding measurement uncertainty on SelectScience

Watch the latest scientific webinars on SelectScience. ....

Martin Ross , European Association Of National Metrology Institutes , International Organization Of Legal Metrology , Calibration Guideline , European Association , National Metrology Institutes , Pheur Chapter , International Organization , Legal Metrology , Clinical Diagnostics , Drug Discovery , Life Sciences ,

Results you can trust: Minimizing weight measurement uncertainty on SelectScience

Watch the latest scientific webinars on SelectScience. ....

Holger Densow , Julian Haller , European Association Of National Metrology Institutes , International Organization Of Legal Metrology , Calibration Guideline , European Association , National Metrology Institutes , International Organization , Legal Metrology , Clinical Diagnostics , Drug Discovery , Life Sciences ,