novel vision of death of massive stars
Last Updated : GMT 10:00:09
Arab Today, arab today
Arab Today, arab today

Novel vision of death of massive stars

Arab Today, arab today

Arab Today, arab today Novel vision of death of massive stars

Gamma-Ray Bursts (GRB)
Tehran - FNA

Scientists published a compendium of data obtained after the simultaneous research of three supernovas and of their corresponding Gamma-Ray Bursts (GRB) enabling to contrast statistically that the supernovas associated with GRB emit greater quantities of nickel compared to those not linked to GRB.
An international consortium, in which the University of the Basque Country (UPV/EHU), Ikerbasque and CSIC are participating, has published in a single article a compendium of data obtained after the simultaneous research of three supernovas and of their corresponding Gamma-Ray Bursts (GRB).
The research enabled contrasting statistically that the supernovas associated with GRB emit greater quantities of nickel compared to those not linked to GRB.
Participating in this study were researchers from 19 countries and who employed 13 telescopes distributed throughout the planet. The results have been published in the journal Astronomy & Astrophysics.
Gamma-Ray Bursts are brief and intense flashes of gamma radiation that occur randomly in the heavens at a rate of approximately three per day.
Since 2003 astrophysicists believe that at least a large part of these gamma ray outbreaks are linked to supernovas; nevertheless, not all supernovas emit gamma rays.
The sample studied by this international consortium was made up of three GRBs and their respective supernovas.
It should be stressed that the quality of the data obtained from one of the supernovas has enabled knowledge to be gained of the properties of the neutron star that can result from the explosion.
In concrete, it could be shown that the neutron star behaves like a gigantic spinning top of various kilometers radius, and with a high period of rotation (12 milliseconds) and an intense magnetic field (100 billion Gauss, Earth's magnetic being only half a Gauss).
The research on the association of a GRB with a supernova required great international effort, as it was necessary for telescopes at various observatories to monitor the evolution of the intense brightness over months. This explains that, after eleven years since the GRBs were first linked to supernovas, only a few cases have been published in the international literature.
This new and novel study presents -- in just one publication -- a compendium of three GRBs associated with three supernovas, in what is a qualitative and quantitative leap forward in the number of supernovas that have been linked to GRBs. The UPV/EHU has had the honor of taking part for the first time in one of these great international consortia.
Astrophysicists have known for decades now that stars are born, they mature and then die in different ways. There have been many research studies undertaken in this field which have helped to understand the mechanisms by which stars terminate their lives.
It is thus known that "small" stars (with masses approximately less than 9 times the mass of the Sun) end their lives placidly, slowly extinguishing in the same way as an incandescent metal cools down.
Our Sun belongs to this type of star, able to live for a long period of time (for approximately 10,000 million years) before burning out definitively.
"Massive" stars (with masses greater than approximately 10 solar masses) have much more agitated lives however. After a life of approximately 30 million years (at the most), these stars of great mass violently explode as a supernova.
A supernova is simply the result of a complex explosion in a spherical form that happens when the star runs out of its nuclear fuel.
It has been well established by astrophysicists that in the interior of such explosions a central object of very high density arises. This remnant of the explosion can be a neutron star or a black hole, depending on the mass of the star. The density of these objects is so high that it is equivalent to concentrating all the mass of a commercial aircraft into one grain of sand.

 

arabstoday
arabstoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

novel vision of death of massive stars novel vision of death of massive stars

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

novel vision of death of massive stars novel vision of death of massive stars

 



Arab Today, arab today
Arab Today, arab today Jordanian woman reveals her project

GMT 00:46 2017 Saturday ,11 November

Jordanian woman reveals her project
Arab Today, arab today The Big Apple bike boom

GMT 10:47 2017 Wednesday ,22 November

The Big Apple bike boom
Arab Today, arab today Sophian Yussef reveals suitable decoration

GMT 02:56 2017 Thursday ,23 November

Sophian Yussef reveals suitable decoration
Arab Today, arab today Syria opposition meets in Riyadh

GMT 06:23 2017 Thursday ,23 November

Syria opposition meets in Riyadh
Arab Today, arab today 'Advanced' cyber attack targets Saudi Arabia

GMT 10:18 2017 Wednesday ,22 November

'Advanced' cyber attack targets Saudi Arabia
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today Australian academic's book pulled

GMT 15:20 2017 Monday ,13 November

Australian academic's book pulled
Arab Today, arab today Srebrenica women cry tears of joy

GMT 08:03 2017 Thursday ,23 November

Srebrenica women cry tears of joy
Arab Today, arab today Delhi half-marathon to go ahead

GMT 03:51 2017 Saturday ,18 November

Delhi half-marathon to go ahead
Arab Today, arab today The history of solar eclipses

GMT 05:16 2017 Sunday ,20 August

The history of solar eclipses
Arab Today, arab today 'Robo-taxis' hold promise, and perils

GMT 08:07 2017 Thursday ,23 November

'Robo-taxis' hold promise, and perils
Arab Today, arab today Honda recalls 800,000 minivans

GMT 11:43 2017 Wednesday ,22 November

Honda recalls 800,000 minivans
Arab Today, arab today Singer Jahda Wahba has unlimited ambitions

GMT 07:56 2017 Monday ,20 November

Singer Jahda Wahba has unlimited ambitions
Arab Today, arab today paObama climate envoy slams Trump's rejection

GMT 16:04 2017 Friday ,17 November

paObama climate envoy slams Trump's rejection

GMT 09:23 2017 Saturday ,18 November

Fedra happy for “Between Two Worlds” success

GMT 02:14 2017 Saturday ,18 November

May under Brexit pressure at EU reform summit

GMT 18:41 2017 Friday ,20 October

Designer Aql Faqih aspires to innovation

GMT 11:38 2017 Wednesday ,15 November

Unloved vultures fight for their survival

GMT 17:52 2017 Sunday ,03 September

Etiquette expert underlines importance of gifts

GMT 10:43 2017 Wednesday ,22 November

Cigar-shaped asteroid came

GMT 00:44 2017 Monday ,20 November

Japanese regulators raid Airbnb

GMT 17:12 2017 Monday ,07 August

Al-Shawaifi reveals secrets of total solar eclipse

GMT 16:53 2017 Tuesday ,05 September

Youssra depended on colored foam
Arab Today, arab today
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube
arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday