The supermassive black hole (SMBH) in the center of our galaxy, Sagittarius A , is small in size and has just about 4.15 million solar cells. Event Horizon Telescope (EHT) has just released a stunning photo of its submillimeter, which appears to be illuminated by its glowing space. Many galaxies contain thousands of times larger nuclear nuclei, for example, the nucleus of the M87, whose image was taken by EHT in 2020. But SagA is close to us, only about twenty-five thousand light-years, giving astronomers a unique opportunity to explore the SMBH buildings.
As gas and dust attach slightly to the hot surface of the black hole, the disk-like emits an electromagnetic spectrum. Increased episodes and flexible radiation provide clues to the nature of the increase, the size and location of each event in the complex area of the black hole (inside or near the torus? On the other side of the air?), And how the episodes can be—related to each other and dark hole structures, its spin for example. Each wavelength contains its information, and one of the main tools for diagnosing time differences between flares at different wavelengths follows the explosion of different production modes. Sag A has been close enough to be monitored by radio since its discovery in the 1950s; on average, Sgr A grows essentials at a meager cost, a few hundred parts of the Earth-mass per year, but sufficient to produce diversity and spectacular combustion.
CFA Astronomers Steve Willner, Giovani Fazio, Mark Gurwell, Joe Hora, Howard Smith, and colleagues completed their SagA * intermediate observational analysis simultaneously near the infrared, X-ray, and submillimeter using IRAC camera on Spitzer, Chandra X-ray Observatory, NuSTAR mission, ALMA, and GRAVITY tool on the Largest Telescope Interferometer; the campaign required complex goal planning and the reduction of multiple types of data sets. Burning incidents were seen between July 17-26, 2019 (unfortunately, the SMA was closed due to protests in the mountains.) The team notes that the 2019 operation shows an unusually high acquisition level. While some of the events were observed simultaneously, the submillimeter (ALMA) burns seemed about 20 minutes after infrared burns and X-ray (Chandra).