Facts and Information you should know about Magnetar SGR 1806-20

A December 27, 2004, gamma-ray flare expands from SGR 1806–20 and eventually impacts Earth’s atmosphere in this illustrated conception. 
                          
                                                     NASA 

Image Source : Astronomy Magazine

Topic : Facts and Information you should know about Magnetar SGR 1806-20

Our Universe is full of mysterious and Amazing Objects and things. Today in this article we are going to see one of them.

Today’s topic is Magnetar SGR 1806-20 , well before talking about SGR 1806-20 , In the first instance let us talk about Magnetar.

What is a Magnetar ?

A Magnetar is a type of neutron star with an immense magnetic field and it emits Electromagnetic Radiation , which is normal for magnetic objects.

Now let us move to our main topic.

Magnetar SGR 1806-20 :

Magnetar SGR 1806-20 is also a neutron star but this is a very special magnetar because it is the most highly magnetised object ever observed.

According to a survey of 2016 SGR 1806-20 is the most highly magnetised object in the universe ( as I have mentioned above ).

To understand the Magnetic field of SGR 1806-20 in a deep way , let us compare it with our sun’s magnetic field.

So, the magnetic field of SGR 1806-20 is 1015 Gauss (G) , while the magnetic field of our Sun is Just in between 1-5 Gauss. Now you can imagine how powerful it is in the field of Magnetic fields.

So, we can say this is the most powerful object in the case of Magnetic field.

Diameter and Rotation :

The Diameter of SGR 1806-20 is estimated to be 20 kilometres which is just 12 Miles. And the rotation speed of SGR 1806-20 is 30,000 km/h and on an average it takes 7.5 seconds for its complete rotation on its axis.

Discovery and Location :

In the year of 1979 SGR 1806−20 was discovered and it is located in the Sagittarius Constellation ( In milky way ) which is 50,000 Light-years away from Us ( Earth). At the beginning it was identified as a soft gamma repeater.

( Soft Gamma Repeater : It is an astronomical object in outer space which emits gamma-rays and X-rays at very large scales at Irregular Intervals.)

Also Read : Betelgeuse : (A Mysterious Star) ,Facts You Should Know 2021

Explosion on SGR 1806-20 :

On December 27, 2004 astronomers detected a radiation from SGR 1806-20 and named it as (GRB 041227). This radiation was Fifty thousand years old, which means the explosion on the SGR 1806-20 surface took place Fifty thousand years ago.

The radiation was gamma radiation with an absolute magnitude of -29.
As per astronomers it was the brightest event to have been observed on this planet from outer space , until GRB 080319B.

The energy released by Magnetar in One-tenth of a second (1.0×1040 J)
Was more than the releases by sun in 150,000 years ( 1.85×1039 J).

And this burst is thought to be the largest explosion observed by humans in our galaxy Since the SN 1604 Supernova observed by Johannes Kepler in the year of 1604.

In this burst the Earth’s ionosphere was struck by gamma rays and created more Ionization , which briefly expanded the ionosphere.

Bonus Fact : 1E 1048.1-5937 is a Magnetar located 9,000 light-years away from earth in the Carina Constellation , and this Magnetar is the nearest known Magnetar to Earth.

Exact Location of SGR 1806−20 :

The exact location of SGR 1806−20 is at core of radio nebula G10.0-0.3
in the Sagittarius Constellation. It is also Component of W31 , which is one of the largest regions in the Milky way galaxy.

Also Read : A new form of Supernova : A Prediction that turned out to be true

About the Post :

So, this is all about object with the most powerful magnetic field. So far we have learnt many new terms regarding SGR 1806−20 and Astronomy. So, that’s it for today. I hope you enjoyed reading this article. See you in the next article. Have a good day.

Share