Is the gravitational vibration after the merging of supermassive objects meaningful?

More Esa Säkkinen's questions See All

Could the Higgs boson be an artefact?

I found that in the LHC there can occur some symmetric ordering of protons in the high magnetic field. An interesting formation would be 6-ring+3-ring+1 = 10 protons. When two 10-protons packets...

05 August 2016 1,732 6 View

Can a black hole be separated as a serie of mini holes?

I wonder if the heavy gravitational pressure and the quantum states to remain could form small black holes targetting repulsive forces between each other. The idea brought out of the inconvenience...

25 April 2016 6,864 4 View

Quality of the training environment

Quality of the training environment is new term, Includes all appliances, tools and sports fields, and the impact on the psychological athlete. who can give helpful?

01 January 1970 6,653 1 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Could anyone tell me what is the range of submillimeter wave?

There is confusion regarding the submillimeter-wave range. Many papers specify its range from 300GHz but some also consider its range from 100GHz. If I design an antenna on 122ghz what would I...

01 March 2021 516 7 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

Complex wave form in ANSYS?

Is there a way to input wave speed in a complex form on ANSYS? The wave speed I need to assign a material is 325(1+0.11i) however I have been unable to do this thus far. Failing that, is there...

27 February 2021 5,969 1 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

How do you mesh a thin solid in Fluent?

Hello, I have used the shell function on SpaceClaim to create thin solids for the model I am studying. These are contained within an enclosure for my study. I chose this approach as it avoids the...

24 February 2021 8,856 3 View

Could you please suggest to me research in which a relation between the shear wave velocity and the degree of saturation for stone was discussed?

Hi all, I am looking for a graph or a relation that relates the degree of saturation and the shear wave velocity for the marlstone. Looking forward to your suggestions Best Regards

24 February 2021 9,690 1 View

Vikash Pandey

It tells about the strain experienced in the space-time as a result of the merger.

Vyacheslav Ivanovich Dokuchaev

GW-vibrations after the merging (black hole quasinormal modes) contain information on the final black hole mass and spin (Kerr papameter a).

Esa Säkkinen

In fact, there seem to be bigger echos too...

https://arxiv.org/pdf/1709.01525

https://arxiv.org/pdf/1707.03021.pdf