GW (Gravitaional wave) detection: A new finding by LIGO team and beginning of New Era

#Frequency #sources #Reference #Standard
Share

According to Einstein theory of  general relativity, gravity is treated as a phenomenon resulting from the curvature of space time. This curvature is caused by the presence of mass, 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 case, accelerating objects generate changes in this curvature, which propagate outwards at the  light speed 3e8m/s in a wave-like manner. These propagating phenomena are known as gravitational waves.

Long ago, deep in space, two massive black holes—the ultrastrong gravitational fields left behind by gigantic stars that collapsed to infinitesimal points—slowly drew together. The stellar ghosts spiraled ever closer, until, about 1.3 billion years ago, they whirled about each other at half the speed of light and finally merged. The collision sent a shudder through the universe: ripples in the fabric of space and time called gravitational waves. Five months ago, they washed past Earth. And, for the first time, physicists detected the waves, fulfilling a 4-decade quest and opening new eyes on the heavens.

Albert Einstein predicted the existence of gravitational waves 100 years ago, but directly detecting them required mind-boggling technological prowess and a history of hunting. LIGO researchers sensed a wave that stretched space by one part in 1021, making the entire Earth expand and contract by 1/100,000 of a nanometer, about the width of an atomic nucleus. The observation tests Einstein’s theory of gravity, the general theory of relativity, with unprecedented rigor and provides proof positive that black holes exist. This talk is about the possiblity of detecting the GW uisng Mobius inspired multi-konots negative index inspired arbitray structure acts like detector in GW regions. The frequency of GW spectrum is unknown and opens the new reserach just like electromagnetic wave spectrum.



  Date and Time

  Location

  Hosts

  Registration



  • Add_To_Calendar_icon Add Event to Calendar
  • Synergy Microwave Corp
  • Paterson, New Jersey
  • United States
  • Building: 201 McLean Boulevard

  • Contact Event Host
  • Ajay Kumar Poddar, Phone: (201)560-3806) (Email: akpoddar@synergymwave.com)

  • Co-sponsored by MTT/AP-S (Chair-Dr. Ajay K. Poddar)
  • Starts 11 February 2016 04:00 PM UTC
  • Ends 15 February 2016 04:00 PM UTC
  • No Admission Charge


  Speakers

Ulrich Rohde

Topic:

GW (Gravitaional wave) detection: A new finding by LIGO tean

Biography:

Prof. Dr.-Ing. habil. Dr. h.c. mult. Ulrich L. Rohde is a Chairman of Synergy Microwave Corp., Paterson, New Jersey; President of Communications Consulting Corporation, serving as an honorary member of the Senate of the Department of Defense University Munich ,honorary member of the Senate of the Brandenburg University of Technology Cottbus–Senftenberg , Germany; past member of the Board of Directors of Ansoft Corporation, Pittsburgh, Pennsylvania; and is a partner of Rohde & Schwarz, Munich, Germany. 

Email:

Address:Brandenburgische Technische Universitat, BTU Cottbus, Cottbus, Brandenburg, Germany, 03013

Dr. Ajay Poddar

Topic:

GW Frequency Spectrum

Astrophysical electromagnetic waves are typically much smaller than their sources, ranging from a few kilometres down to sub-nuclear wavelengths. On the otherhand, GW (gravitational waves) are larger than their sources, with wavelengths starting at a few kilometres and ranging up to the size of the Universe. A gravitational perturbation larger than the Universe would not be called a wave because it would not have any detectable oscillation; in fact, it would not be detectable at all. In general, GW  consists of ripples in the curvature of spacetime which propagate as waves, travelling outward from the source. Nobel Laurette Albert Einstein formulated  theory of general relativity gravitational waves transport energy as gravitaional radiation.  The existence of gravitational waves is a possible consequence of the Lorenzt invarianace of general theory of relativity since it brings the concept of a finite speed of propagation of the physical interactions with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that physical interactions propagate at infinite speed. Water waves, sound waves, and electromagnetic waves are able to carry energy, momentum, and angular momentum. By carrying these away from a source, waves are able to rob that source of its energy as well as its linear and angular momentum. Gravitational waves perform the same function. Thus, for example, a binary system loses angular momentum as the two orbiting objects spiral towards each other—the angular momentum is radiated away by gravitational waves.

On 11 February 2016, the LIGO collaboration announced the detection of GW, from a signal detected at 10:51 GMT on 14 September 2015 of two black holes with masses of 29 and 36 SOLAR MASSES merging together about 1.3 billion light years away. During the final fraction of a second of the collision, It released more power than 50 times of all the stars in the observable universe combined. The signal sweeps upwards in frequency from 35 to 250 Hz. The mass of the new black hole obtained from merging the two was 62 solar masses. Energy equivalent to three solar masses was emitted as gravitational waves. The signal was seen by both LIGO detectors, in Livingston and Hanford, with a time difference of 7 milliseconds due to the angle between the two detectors and the source. The signal came from the sOUTHERN CELESTIAL HEMISPHERE, in the rough direction of (but much further away than) the MAGELLANIC CLOUDS.

This talk will discuss about the spectrum of GW applications in Astronomy.

Biography:

Associate Professor (RF & Microwave Engineering), Oradea University, Romania

http://www.uoradea.ro/display5879

Chief Scientist (Synergy Microwave Corporation, 201 McLean Boulevard, NJ 07504, USA)

Guest Professor (Technical University Munich, Germany)

Academy Advisory Board Committee Member (Don Bosco Institute of Technology, Bombay, India)

 


Ulrich Rohde

Topic:

GW (Gravitaional wave) detection: A new finding by LIGO tean

Biography:

Email:

Address:Cottbus, Brandenburg, Germany

Dr. Ajay Poddar

Topic:

GW Frequency Spectrum

Biography:






Agenda

5:00PM-6:00PM: Talk You don't have to be IEEE member to attend the talk.