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How can I define the calibration of Gravitational waves.


Hunt for Gravitational wave.

Article by: Rahul Kumar



According to Einstein, we should expect to find this radiation everywhere in space. So, why is it still one of astronomy’s most elusive targets?



Gravity alters the shape of space and time. Paths of light and massive bodies curve under its influence. When something Agitate space-time with enough energy – say a supernova explosion – the distortion spreads out in ripples, like a stone  when  dropped in a pond. Those ripples or waves are called gravitational waves. But this waves are very weak and only if the accelerating object has enough mass, it should be possible to spot them. At least, that’s what we suspect. we’ve been trying to detect them ever since.

In Einstein's theory of general relativity published in the year 1916, gravity is treated as a phenomenon resulting from the curvature of spacetime. This curvature is caused by the presence of mass. Generally, the more mass that is contained within a given volume of space, the greater the curvature of spacetime will be at the boundary of this volume. As objects with mass move around in spacetime, the curvature changes to reflect the changed locations of those objects. In certain circumstances, accelerating objects generate changes in this curvature, which propagate outwards at the speed of light in a wave-like manner. These propagating phenomena are known as gravitational waves.

To define in simple words the space time according to Einstein is a sheet similar to a paper hold horizontally along the axis which in this case is represented as Space time. Well more details about the gravitational wave can be read online. 

This topic which i am gonna talk about is regarding the possibilities of whether we can or cannot detect the gravitational waves. In particular, gravitational waves could be of interest to as they offer a possible way of observing the very early universe. This is not possible with conventional astronomy, since before the universe was opaque to electromagnetic radiation. Precise measurements of gravitational waves will also allow scientists to test the general theory of relativity more thoroughly. 

Now to be more precise scientist today think that these wave can be dedicated only if there is a sudden distortion in the space time curve which will create a ripple in principal of different frequency and wavelength 
ranging from 10−7 Hz up to 1011Hz which can be measured using Laser Interferometer Space Antenna.

But my question is, Why do we think that only the sudden distortion created by an object moving with the near speed of light can create a gravitational wave?

why do light bends along the path traveled if encountered by an heavy object? Well in that case there is no sudden distortion in the space time curve, the distortion have been there for a very long time period and which is due to the weight of the heavy object. Similarly there are many cases in which the sudden distortion theory does not work out. 

My view to look at this theory is little off the conventional way. Well lets do a small experiment, take a large piece of paper and hold it horizontally and ask you friend to place a ball on the paper. Now what do u notice? I hope u will see that there is deformation in the paper where the ball is placed right? So the next thing which i would like you to do is to imagine that if you are running on this sheet of paper. So when u start running on this paper the relationship is formed between you and this sheet and that relationship is marked down at the point of contact between you and the sheet. Now when there is no deformation in the space, you can run straight with out any deviation from your original path. But then there is a deformation in the path you travel which is not created by you then the out come of whether you have reached the destination is uncertain.

Now when you know this fundamental concept of how the space time cure distorts and how do lighter object bend they path along the those of the heavy ones.

So lets have a deeper look into how this gravitation wave can be measured. Let me tell you that the method which i am gonna tell is totally concerned with my view towards this topic.

Then we take a large amount of body and scatter on the sheet of paper as mentioned earlier and if we notice the change then we can clearly see that there are many distortion formed in the sheet and which are basically the dent in the sheet. so if you start running on this sheet of paper you will notice that path is not straight but always bend's due to the distortion and if you speed is less and if you by mistakenly fall in any of these big pit then u will be rotating around then just like a circus performer in hole of death where the person down the in the hole tries to come out of that hole by increasing this speed which eventually over runs the force that holds the man in that hole. 

Well now how does this man running on a sheet if fall in pit and still manages to rotate around the body with out over coming the pull is a different set of story.

So now coming back to point, When the mass of the object increases gradually the tension in curve also increases and finally you can see that the bodies lighter then this are gradually pulled towards this heavy object. And in this way we can explain why the black hole pulls the body in it. So as we know from the basic laws of quantum mechanics that all the body existing in this universe like to be in the minimum energy state and if any alter in the energy level is made then it will try either to absorb or dissipate out the excess energy to maintain the balance.

But remember that even the lighter bodies around the heavy ones will have some distortion in the space time curve and will create a resistant towards the pull by heavy body. 

So if the concept of resistance is right then this resistance wave carry energy, momentum and angular momentum with it and we can measure this wave with the help of a distinguish spectroscopy. 

And the other possible method to measure is bit complicated but will give us a better valve. Well in experiment of the balls on the sheet of paper. If we increase the weight of the ball at the centre at a gradual rate then we will notice that the pull of this ball will create an over impact in the space time curve and will reduce the over all distortion under the lighter body. So when we start running at this new distorted space you will notice that we require a less force to over come which means our frequency and wave length will keep altering over the period of time and so it we measure this variation over a period of time then we will be able to get the value of gravitational wave over the period of time.


   

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