Physicist කෙනෙක් ඉන්නව ද?

[kasunigamage]

Gamma ray bursts දවසකට එකක් වගේ ඇති වෙනවා නම් ඒ කියන්නෙ දවස ගානෙ බ්ලැක් හෝල්ස් හැදෙන්න පටන් ගන්නව ද?
නැත්නම් එකම බ්ලැක් හෝල් එක gamma ray bursts කීප වරක් ඇති කරනවා ද?

 

[Rogueswindlerbanditcrook]

Gamma ray bursts දවසකට එකක් වගේ ඇති වෙනවා නම් ඒ කියන්නෙ දවස ගානෙ බ්ලැක් හෝල්ස් හැදෙන්න පටන් ගන්නව ද?
නැත්නම් එකම බ්ලැක් හෝල් එක gamma ray bursts කීප වරක් ඇති කරනවා ද?

GRB ekak enna blackholes walinma newei. Neutron stars 2k collide unama, Blackholes +Neutron stars collide unamath enawa.

 

[imhotep]

Gamma ray bursts දවසකට එකක් වගේ ඇති වෙනවා නම් ඒ කියන්නෙ දවස ගානෙ බ්ලැක් හෝල්ස් හැදෙන්න පටන් ගන්නව ද?
නැත්නම් එකම බ්ලැක් හෝල් එක gamma ray bursts කීප වරක් ඇති කරනවා ද?

Gamma Ray Bursts were thought to be generated with the formation of black holes. They are short bursts but contain as much energy as our Sun will emit for its entire life of 10 billion years. The Gamma Ray experimental satellites showed that there are two types of gamma-ray bursts with distinct signatures: those that lasted 2 to 30 seconds, and those that flashed for less than 2 seconds.

The longer one have been found to be associated with ultrapowerful supernovas called hypernovas, which occur when stars between five and 10 times the solar mass end their lives and implode into black holes. Hypernovas are 100 times brighter than typical supernovas and are thought to be generated by stars that are spinning particularly fast or have an especially strong magnetic field, imparting extra energy to their combustions.

However, the shorter one, which is about 30% of all burst events remained unexplained till NASA's Swift Gamma-Ray Burst Explorer was finally able to record enough data. This data enabled to figure out that the most likely cause is when two ultradense neutron stars collided and formed a black hole, or when a black hole ate a neutron star.

Currently the LIGO project will collect more data on these as these cause Gravitational Waves. Check the LIGO site. There will be much more information on GRBs.

Note that although satellites spot about one gamma-ray burst per day, roughly 500 are occurring within the same time period. So far gamma-ray bursts have only been detected in distant galaxies. Hope one doesn't happen near us.... all of us are then finished.