Multiwavelength View of the M87 Black Hole Captured by the Event Horizon Telescope
Open Access
- 8 October 2021
- journal article
- Published by American Astronomical Society in Research Notes of the AAS
- Vol. 5 (10), 221
- https://doi.org/10.3847/2515-5172/ac2d33
Abstract
In 2017, the first image of the center of the M87 galaxy was captured by the Event Horizon Telescope (EHT). It revealed a ring morphology and a size consistent with theoretical expectations for the light pattern around a weakly accreting supermassive black hole of ∼6.5 billion solar masses. In parallel to the EHT measurements, an extensive multi-wavelength (MWL) campaign with ground- and space-based facilities from radio all the way up to the TeV energy range was organized. In this note we will give an overview of the results from this campaign. M87 was found to be in a historically low state. At X-ray energies the emission from the core dominates over HST-1. We present the most complete simultaneous, MWL spectrum of the active nucleus to date.This publication has 12 references indexed in Scilit:
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