Dr. Nijo Varghese

Dr. Nijo has joined as Assistant Professor in the Department of Physics in December, 2014. Earlier he held the same post at Sacred Heart College, Thevara, Kochi prior to that he was a UGC Dr. D S Kothari Post Doctoral fellow at Mahatma Gandhi University, Kottayam.

Nijo obtained Masters and Doctorate in Physics from the Department of Physics, Cochin University of Science and Technology, Kerala in 2006 and 2013 respectively. He received Bachelor’s Degree in Physics from Christ College, Irinjalakuda, University of Calicut in 2004.

He is a Life Member of Academy of Physics Teachers (APT), Kerala

His areas of research interests are Black hole physics, Gravitational waves and Dark energy models and teaching interests are in theoretical and computational physics.

Apart from his research and teaching he is actively involved in various public outreach and science popularization activities. His hobbies include astrophotography and making science toys.

Contact

Email : nijo@sacredheartcollege.ac.in

Academic Profile

Education

  • M Sc. Physics – CUSAT, Kerala(2006)
  • B Sc. Physics – Christ College, Irinjalakuda, University of Calicut, Kerala(2004)

Postdoctoral / Professional Experience

  • UGC – Dr. D. S. Kothari Post Doctoral Fellow, SPAP, Mahatma Gandhi University, Kerala

Research Interests

My areas of research interests are Black hole physics, Gravitational waves and Dark energy models. Black hole’s response to external perturbations will carry significant information about these exotic objects. This response, is dominated by the damped oscillation of the perturbations, called quasinormal modes(QNMs), followed by the tails of decay and is the characteristic of the background black hole spacetime. On the other hand, in the last three decades, several shortcomings came out in the Einstein’s General Theory of Relativity(GTR), mainly due to the observed accelerated expansion of the universe and the failure to achieve a quantum version of gravity. My studies probe the signature of new theories of gravity on the evolution of various field perturbations on the black hole spacetimes. Recently direct detection of gravitational waves from black hole binary system is realized by LIGO team. We hope the information about the fundamental theory can be obtained from the gravitational waves produced by events involving the black hole.

Publications

  1. Late-time evolution of Dirac field around Schwarzschild-quintessence black hole”, Nijo Varghese and V. C. Kuriakose Mod. Phys. Lett. A, 29 1450113 (2014).
  2. The thermodynamics and thermodynamic geometry of the Park black hole”, Jishnu Suresh, R. Tharanath, Nijo Varghese and V. C. Kuriakose Eur. Phys. J. C, 74 2819 (2014).
  3. Thermodynamic geometry of Reissener-Nordstrm-de Sitter black hole and its extremal case”, R. Tharanath, Nijo Varghese and V. C. Kuriakose Gen. Relativ. Gravit., 46 1743 (2014).
  4. Phase transition, quasinormal modes and Hawking radiation of Schwarzschild black hole in quintessence field”, R. Tharanath, Nijo Varghese and V. C. Kuriakose Mod. Phys. Lett. A, 29 1450057 (2014).
  5. Late-time tails of fields around a Schwarzschild black hole surrounded by quintessence”, Nijo Varghese and V. C. Kuriakose. Gen. Relativ. Gravit., 45 189 (2013).
  6. Evolution of massive fields around a black hole in Horava gravity”, Nijo Varghese and V. C. Kuriakose, Gen. Relativ. Gravit., 43, 2757 (2011).
  7. Evolution of electromagnetic and Dirac perturbations around a black hole in Horava gravity”, Nijo Varghese and V. C. Kuriakose, Mod. Phys. Lett. A, 26, 1645 (2011).
  8. Effect of cosmic string in spherically symmetric Black Hole on the Dirac perturbation”, Sini R., Nijo Varghese and V. C. Kuriakose, Mod. Phys. Lett. A. 25, 111 (2010).
  9. Quasinormal modes of Reissner-Nordstrom black hole surrounded by quintessence”, Nijo Varghese and V. C. Kuriakose, Gen. Relativ. Gravit., 41 1249 (2009).
  10. Absorption cross-section of Reissner-Nordstrom and Schwarzschild-de Sitter extremal black hole”, Sini R., Nijo Varghese and V. C. Kuriakose, Int. J. Mod. Phys. A, 23, 4011 (2008).

Conferences Presentations

  1. Dirac field around black hole in an expanding Universe”, Nijo Varghese and V. C. Kuriakose, Workshop on Astronomy Research: Opportunities and Challenges, Thiruvalla, Kerala (2013).
  2. Late-time evolution of massive fields around black hole surrounded by quintessence”, Nijo Varghese and V. C. Kuriakose, International Conference on Modern Perspectives of Cosmology and Gravitation(COSGRAV), Kolkatta, India (2012).
  3. Evolution of massive fields around black hole in Horava gravity”, Nijo Varghese and V. C. Kuriakose, VIIth International Conference on Gravitation and Cosmology(ICGC), Goa, India(2011).
  4. Evolution of electromagnetic perturbation around black hole in Horava gravity”, Nijo Varghese and V. C. Kuriakose, 26th meeting of the Indian Association for General Relativity and Gravitation (IAGRG-26), Allahabad, India (2011).

Conferences

13.    Indian Academy’s Refresher course on Quantum Mechanics,  Bishop Moore College, Mavelikkara, (May 1-14, 2017)

  1. National workshops organized by Academy of Physics Teachers on Theoretical physics and Virtual Astronomy (2015,2016,2017)
  2. National Workshop on gravitational waves, M A College, Kothamangalam, Kerala(December, 2015)
  3. NationalWorkshop on Gravitation and Cosmology, Sacred Heart College, Thevara, Kerala (September, 2014)
  4. Workshop on Astronomy Research: Opportunities and Challenges, MACFAST, Kerala (August, 2013)
  5. ICTS School on Numerical Relativity, ICTS-TIFR, Banglore (June 2013).
  6. Workshop on Fourier Transforms in (Astro)Physics, M.G. University, Kerala (February, 2013).
  7. International Conference on Modern Perspectives of Cosmology and Gravitation(COSGRAV), ISI, Kolkatta (January 2012).
  8. VIIth International Conference on Gravitation and Cosmology(ICGC), Goa (December 2011).
  9. International Conference on Frontiers in Nanoscience and Technology, Kochi, Kerala (August -2011).
  10. Recent Trends in Theoretical Physics, CUSAT, Kerala (March 2011).
  11. 26th meeting of the Indian Association for General Relativity and Gravitation (IAGRG-26), HRI, Allahabad (January 2011)
  12. Conference on Chandrayana, IMSc, Chennai (January 2011).

Invited Lectures

  •  ‘Wonders of Sky’, Sasthrapadham 2019′ Christ College, Irinjalakuda  1st Feb 2019 (Higher Educational Department, Kerala Sponsored)
  • “Night Sky watching” in Talent Hunt – Shastrajalakam, Sree Sankara College, Kalady 23 Nov 2018 (SIET, Kerala Sponsored)
  •  ‘Know Your Universe’ St. Antony’s CHS Kottatt, 5th Nov 2018
  • ‘Wonders of the Universe’ Vimala College, Thrissur, 6th Feb 2018, KSESTE Sponsored
  • ‘The Dawn of Gravitational Wave Astronomy’, Sahrdaya College of Advanced Studies, Kodakara, 2nd Feb 2018
  • ‘Wonders of the Universe’, MES Asmabhi College, Kodungallor 31st Jan 2018
  • “Sun Spots & Night Sky”, Workshop on ‘Telescope making and Sky Watching’, Alagappanagar HSS, Amballoor (7th Oct 2017)
  • “Gravitational Waves -New Window to the Universe”, Carmel College, Mala(27th Sept 2017)
  • “Night Sky watching”, 3rd March 2017, NSS College, Ottappalam
  • “Night Sky watching”, St. Pauls College, Kalamassery(January, 2017)
  • “The Voice of the Invisibles: Black Hole Vibrations”, National seminar on Gravitational waves, PRNSS College, Kannur(22nd December, 2016)
  • “Ringing of the Cosmic Bells: Gravitational Waves from Black Holes” Seminar on 100 Years of Einstein’s General Theory of Relativity, Govt. College, Madappylly, Kelara (26th February, 2016)
  • “Exploring Our Universe”, World Astronomy Day celebrations, Vyasa Vidyanikethan School, Chalakudy on (24th June, 2016)
  • “Gravity: From Apple to Waves” Workshop on the Development of Scientific Temperament, organized by Vyasa Vidyanikethan School, Chalakudy and sponsored by the Department of Culture, Govt. of India, on (20th August, 2016).
  • “Night Sky Watching” Seminar on Astronomical Instrumentation, Govt. Engineering College, Idukki(24th March, 2015)
  • “Ringing of the Cosmic Bells” Seminar on Astrophysics, KKTM College, Kodungallor, Kerala (21st November, 2014)
  • “Listening to the ‘sound’of black holes” National seminar on Recent Trends in Astrophysics, St. Peter’s College, Kolenchery (14th August, 2014).

Positions Held in the College

  • College Nodal Officer, e-Tender
  • Co-ordinator, DBT-STAR College scheme
  • Local organizer, APT-IIA Workshop on Optical and UV Astronomical Data Analysis for college physics teachers(January, 2018)
  • Co-ordinator, ENCON Club
  • IQAC Joint- Coordinator (2017 Onwards)
  • Local organizer, APT-IUCAA Workshop on Virtual Observatory for college physics teachers(July, 2016)
  • Co-ordinator, Einstein Lecture, sponsored by ICTS, Banglore(February, 2016)
  • Co-ordinator, Ernakulam Dist., KSCSTE sponsored, International Year of Light celebrations(2015)
  • Co-ordinator, KSCSTE sponsored National Science Day programs(February, 2015)
  • Internal mentor, Walk with scholar program, Govt. of Kerala(2015)
  • Convener, National workshop on Gravitation and Cosmology sponsored by IUCAA (2014)
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