Gravitational Waves Point First Light Merging Neutron Stars
by Savard3659 on October 24, 2017 - 5:33pm
In last August, an unusual phenomenon has been detected in the space. What happened that day is a massive collision between two extremely dense neutron stars. It is the first detection of light coming from a gravitational wave source ever. Every single gravitational wave observed since 2015 was cause by the merger of two black holes. This kind of merge can’t be detected, because it is not producing any electromagnetic radiation, which is needed for detecting the event. In the case of the collision of both neutron stars, they are producing an energetic explosion that can be detected by telescopes. This event length 100 seconds the 17th of August at frequencies that went up to thousands of cycles per second. A collision of two neutron stars is also called a "kilonova". To localize the "kilonova", a guy named David Coulter and his colleagues used a telescope in Chile (Swope-1). Their goal was to find the emission of light in the sky. It was localized 10.9 hours after the event was first detected. A lot of invaluable data on X-ray, ultraviolet, optical, infrared and radio were collected that day. After the merger between the two neutron stars, data suggest that matter composed of approximately 5% of the weight of the sun was ejected forth at an estimated 30% of the speed of light. With all the new data collected, we can confirm that Albert Einstein was true in his predictions. As an example, he predicted that a "kilonova" could produce elements that are heavier than iron, which was confirmed when analyzing the merger between two neutron stars.
As far as I am concerned, I believe that this event is an impressive scientific discovery. Indeed, it explains a lot on the mystery of the universe. Analyzing uncommon things like the collision of two neutron stars is just one of all the beauties that exist. What I like about this phenomenon is that it is so rare to observe due to his length. Even if it’s a really quick moment, it’s a wonderful event that unleashed a lot of energy. It is fascinating to see those two little shiny stars producing that much power.
What I like about the article, it’s the numbers. There are plenty of dates, percentage, time and so on. It is really statistical and the reliability is on point. There are also scientific terms that are well defined such as "kilonova" which is the collision between two neutron stars. However, what I think this article is missing is some more explanations on everything that is happening before the two neutron stars collide together. In other words, there’s a lack of details on how this phenomenon comes to this deafening end.