Astronomers studying the black hole at the center of Milky Way for past couple of decades recently reported that they witnessed a strange phenomenon that has not been seen till date. They have been in reality watching play of matter around the black hole when the region becomes more active than usual it becomes bright as it heats up. The region referred to as Sagittarius A in scientific parlance is usually calm but became unusually active during May this year say researchers. Astronomer Tuan Do at California University stated that this is the brightest glow that they have witnessed in their infrared so far.
The researchers lay their hypothesis on the observation that when they viewed the black hole on May 13 they saw that the high brightness was slowly decreasing so apparently it had already crossed an unknown peak which was brighter. As per the paper that they released recently the recent flare at Sagittarius A increased its brightness to twice its previous measurements recorded on date. These observations were made by Tuan Do and his team using KECK telescope located on the top of Mauna Kea at Hawaii which can see the entire world through near infrared light. The wavelengths of this telescope are longer than our eyes can see.
The researchers believe that this flare-up of the black hole could have occurred due to close pass-by of star called SO-2 which occurred last year or a dusty space object called G-2 during 2014. They hope more observations of the region will help them to understand what is happening around the black-hole. Other instruments / telescopes namely Spitzer and Chandra along with ground based instruments have been used for observation of SGR-A for past few months and the data has to be analyzed. The black-hole is also being observed by Event Horizon Telescope which is spanning the globe and published its first image of black hole in April.