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First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration

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An overview of the performance and scientific results from the Chandra X-ray Observatory

MC Weisskopf et al.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC (2002)

Article Astronomy & Astrophysics

On the absorption of X-rays in the interstellar medium

J Wilms et al.

ASTROPHYSICAL JOURNAL (2000)

Article Astronomy & Astrophysics

Viewing the shadow of the black hole at the Galactic center

H Falcke et al.

ASTROPHYSICAL JOURNAL (2000)