Centre of the Galaxy : Did you ever wonder what is in the centre of the Galaxy? What is in the center, which billions of stars are orbiting? Scientists have answer with a detailed mysterious photograph.
A New Giant Radio Telescope has provided us most clear photos of Centre of the Galaxy. These Images shows us in-depth detail of the Centre and it’s mysterious surrounding Region filled with Red Giants and unknown objects called filaments”.
The Centre of the Galaxy
The Centre of the Galaxy is approximately 24000 to 28000 Light Years away from us, our telescopes can not see directly at the centre because there are large clouds of interstellar dust lies in between. This interstellar dust even prevent ultraviolet and Soft X-Rays also.
So, all available information about this mysterious centre we get from Gamma ray, Hard X-Ray, infrared and Radio wavelength observations. These observations tell us that there lies a Super Massive Black hole surrounded by a giant radio source disk; Sagittarius A*. This radio source is powered by super massive black hole. The diameter of this radio source is almost equal to distance from Mercury to Sun.
The Mass of the Centre of the Galaxy is estimated 4.3 Million Solar Masses. Around 10 Million Stars are within one parsec of galactic centre. The nearest star from sun is 1.3 parsec away, by this you can imagine how dense the region is. Here is only two medium stars in 1.3 parsec diameter but at the near of Centre of the Galaxy there are 10 Millions filled in small space.
The Giant Radio Telescope
The Giant Radio telescope is named MeerKAT, it is a combination of 64 radio waves detecting dishes. It took a decade long efforts in Design and Construction to build this Telescope in semi desert Karoo region of South Africa. Each disk is 13.5 meters in diameter. These dishes have four cryogenic receiver systems operating in different radio bands. These 64 disks produce 275 GB Data per second, this huge data is processed in real-time and after further offline analysis images are generated.
Clearest images of Filaments near Centre of Galaxy
“This image is remarkable”, says Farhad Yusef-Zadeh of Northwestern University in Evanston, Illinois, expert of Filament object. These clear images so many new features never seen before, like compact sources associated with some of the filaments, it could provide key to solve this mystery of Magnetized Filament Structures.
This is just the beginning for MeerKat
“We wanted to show the science capabilities of this new instrument”, says Fernando Camilo, chief scientist of the South African Radio Astronomy Observatory (SARAO), which built and operates MeerKAT
“The Centre of the Galaxy was an obvious target: unique, visually striking and full of unexplained phenomena – but also notoriously hard to image using radio telescopes”, according to Camilo. “Although it’s early days with MeerKAT, and a lot remains to be optimized, we decided to go for it – and were stunned by the results.” Said Camilo.
Here are some detailed images of Centre of the Galaxy earlier taken by giant telescopes for your ready reference.
The center of the Galaxy image taken by ISAAC, the VLT’s near and mid-infrared spectrometer and camera
Infrared image of Centre of Galaxy from Spitzer Space Telescope
Infra-red image of the center of the Galaxy revealing a new population of massive stars