Events
Listed below, in reverse chronological order, are past and forthcoming lectures, seminars, colloquia, schools and meetings related to the topics of my interest here at the Indian Institute of Technology Madras.
Forthcoming events
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None as yet
Past events
- Event: Seminar
Title: Regular spacetimes: Black holes, bubbles and wormholes
Speaker: Sayan Kar, Department of Physics, Indian Institute of Technology, Kharagpur
Date: November 19, 2024
Time: 4:00-5:00 PM
Venue: Physics Seminar Hall, HSB 209 - Event: Seminar
Title: Memories of a square pulse
Speaker: Sayan Kar, Department of Physics, Indian Institute of Technology, Kharagpur
Date: November 18, 2024
Time: 4:00-5:00 PM
Venue: Physics Seminar Hall, HSB 209 - Event: Seminar
Title: Inflationary models in perturbative large volume scenario
Speaker: Dibya Chakraborty, Centre for Strings, Gravitation and Cosmology, Department of Physics, Indian Institute of Technology Madras, Chennai
Date: September 19, 2024
Time: 4:00-5:00 PM
Venue: Physics Seminar Hall, HSB 209 - Event: Seminar
Title: Dynamics of the very early universe: Towards decoding its signature through primordial black hole abundance, dark matter, and gravitational waves
Speaker: Md. Riajul Haque, Centre for Strings, Gravitation and Cosmology, Department of Physics, Indian Institute of Technology Madras, Chennai
Date: April 29, 2024
Time: 4:00-5:00 PM
Venue: Bose Hall, HSB 210 - Event: Seminar
Title: CSL and cosmic inflation
Speaker: Jérôme Martin, Institut d’Astrophysique de Paris, Paris, France
Date: August 8, 2024
Time: 4:00-5:00 PM
Venue: Physics Seminar Hall, HSB 209 - Event: Seminar
Title: Quantum ergodicity, holography and geometry
Speaker: Shoy Ouseph, New York University, Abu Dhabi
Date: August 1, 2024
Time: 4:00-5:00 PM
Venue: Physics Seminar Hall, HSB 209 - Event: Seminar
Title: The distribution of cold neutral gas in the local universe
Speaker: Nishikanta Khandai, School of Physical Sciences, National Institute of Science Education and Research, Bhubaneswar
Date: April 25, 2024
Time: 4:00-5:00 PM
Venue: Physics Seminar Hall, HSB 209 - Event: Seminar
Title: The present and future of Hubble tension
Speaker: Supratik Pal, Physics and Applied Mathematics Unit, Indian Statistical Institute, Kolkata
Date: April 4, 2024
Time: 4:00-5:00 PM
Venue: Physics Seminar Hall, HSB 209 - Event: Seminar
Title: Forming primordial black holes with gravitational wave signatures: Inflationary pathway versus false vacuum decay pathways
Speaker: Anish Ghoshal, Institute of Theoretical Physics, University of Warsaw, Warsaw, Poland
Date: February 29, 2024
Time: 4:00-5:00 PM
Venue: Physics Seminar Hall, HSB 209 - Event: Seminar
Title: Precision cosmology with gravitational-wave observations
Speaker: B. S. Sathyaprakash, Department of Physics, Pennsylvania State University, USA and School of Physics and Astronomy, Cardiff University, UK
Date: November 23, 2023
Time: 11:00 AM-12:00 Noon
Venue: Bose Hall, HSB 210 - Event: Chandrasekhar Lecture
Title: Gravitational-wave astronomy: New discoveries, puzzles and prospects
Speaker: B. S. Sathyaprakash, Department of Physics, Pennsylvania State University, USA and School of Physics and Astronomy, Cardiff University, UK
Date: November 22, 2023
Time: 5:30-6:30 PM
Venue: Physics Seminar Hall, HSB 209 - Event: Seminar
Title: Cosmic web unveiled: A window into the universe with HI intensity mapping
Speaker: Sourabh Paul, Department of Physics and Astronomy, University of Manchester, UK
Date: November 15, 2023
Time: 4:00-5:00 PM
Venue: HSB 203 - Event: Seminar
Title: Quantum diffusion during cosmic inflation Speaker: Vincent Vennin, Laboratoire de Physique, de l’Ecole Normale Superieure, Sorbonne Universite and Universite Paris Cite, Paris, France
Date: November 8, 2023
Time: 5:00-6:00 PM
Venue: Central Lecture Theatre - Event: Seminar
Title: Black holes and their QNMs in degenerate EGB gravity
Speaker: G. Suvikranth, Department of Physics, Birla Institute of Technology and Science---Pilani, Goa Campus, Goa
Date: September 29, 2023
Time: 2:00-3:00 PM
Venue: HSB 203 - Event: Seminar
Title: The pairwise and cross-pairwise y-type polarised kinetic Sunyaev-Zeldovich effect from the transverse velocity of galaxy clusters
Speaker: Aritra Gon, Department of Theoretical Physics, Tata Institute of Fundamental Research, Mumbai
Date: September 27, 2023
Time: 3:00-4:00 PM
Venue: HSB 203 - Event: Popular talk
Title: Quests and conquests: Gravitational wave science
Speaker: Tarun Souradeep, Raman Research Institute, Bengaluru
Date: September 25, 2023
Time: 5:30 PM
Venue: Physics Seminar Hall, HSB 209 - Event: Seminar
Title: Many faces of reheating and their signatures on primordial gravitational waves
Speaker: Debaprasad Maity, Department of Physics, Indian Institute of Technology, Guwahati
Date: September 21, 2023
Time: 5:00-6:00 PM
Venue: HSB 209 - Event: Popular talk
Title: Mystery of the universe
Speaker: Masahide Yamaguchi, Institute for Basic Science, Daejeon, Korea and Theoretical Cosmology Group, Department of Physics, Tokyo Institute of Technology, Japan
Date: August 22, 2023
Time: 6:00-7:00 PM
Venue: HSB 310 - Event: Seminar
Title: New dynamical degrees of freedom from invertible transformations
Speaker: Masahide Yamaguchi, Institute for Basic Science, Daejeon, Korea and Theoretical Cosmology Group, Department of Physics, Tokyo Institute of Technology, Japan
Date: August 17, 2023
Time: 4:00-5:00 PM
Venue: HSB 210 - Event: Seminar
Title: Primordial black holes from inflation: Dark matter, gravitational waves and imprints from evaporation
Speaker: Rajeev Kumar Jain, Department of Physics, Indian Institute of Science, Bengaluru
Date: August 10, 2023
Time: 4:00-5:00 PM
Venue: HSB 210 - Event: Seminars
Title: Quantum mechanics in the sky?
Speaker: Jérôme Martin, Institut d’Astrophysique de Paris, Paris, France
Dates: July 25 and 27, 2023
Time: 4:00-5:00 PM
Venue: HSB 210 - Event: Seminar
Title: Indirect imprints of primordial non-Gaussianity on cosmological observables
Speaker: H. V. Ragavendra, Raman Research Institute, Bengaluru
Date: July 20, 2023
Time: 4:00-5:00 PM
Venue: HSB 210 - Event: Seminar
Title: Cosmology with the redshifted HI 21-cm line
Speaker: Somnath Bharadwaj, Department of Physics, Indian Institute of Technology, Kharagpur
Date: July 5, 2023
Time: 4:00-5:00 PM
Venue: HSB 210 - Event: Seminar
Title: Equations of state in the curved space-time of compact degenerate stars
Speaker: Susobhan Mandal, Department of Physical Sciences, Indian Institute of Science Education and Research, Kolkata
Date: March 27, 2023
Time: 4:00-5:00 PM
Venue: HSB 203 - Event: Meeting
Title: Aspects of Cosmology
Date: December 23, 2022
Time: 9:00 AM-1:10 PM
Venue: HSB 210 - Event: School
Title: Mini School on Gravitation and Cosmology
Dates: November 24-26, 2022
Time: 9:00 AM-4:30 PM
Venue: HSB 210 - Event: Seminar
Title: Precision cosmology methodologies in CMB: Deconvolution, inflation and weak lensing
Speaker: Rajorshi Sushovan Chandra, Raman Research Institute, Bengaluru
Date: November 17, 2022
Time: 4:00-5:00 PM
Venue: HSB 210 - Event: Seminar
Title: Novel interferometric approaches to probe large-scale structures in the early universe using redshifted 21 cm
Speaker: Nithyanandan Thyagarajan, CSIRO, Kensington, Australia
Date: October 27, 2022
Time: 4:00-5:00 PM
Venue: HSB 203 - Event: Seminar (Hybrid)
Title: Geometrical and topological properties of CMB fields
Speaker: Vidhya Ganesan, Raman Research Institute, Bengaluru
Date: September 15, 2022
Time: 4:00-5:00 PM
Venue: Bose Hall, HSB 210 - Event: Seminar (Hybrid)
Title: Quantum entanglement phenomenon between uniformly accelerated detectors in a thermal bath
Speaker: Subhajit Barman, Department of Physics, Indian Institute of Technology, Guwahati
Date: August 25, 2022
Time: 4:00-5:00 PM
Venue: Bose Hall, HSB 210 - Event: Seminar (Hybrid)
Title: Probing quantum gravity and non-locality through R^2-like inflation
Speaker: K. Sravan Kumar, Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
Date: August 18, 2022
Time: 4:00-5:00 PM
Venue: Bose Hall, HSB 210 - Event: Seminar (Hybrid)
Title: Back to the features: signatures of primordial physics in the cosmic microwave background
Speaker: Matteo Braglia, Instituto de Fı́sica Teórica, Cabrera, Madrid, Spain
Date: July 14, 2022
Time: 11:30 AM-12:30 PM
Venue: Bose Hall, HSB 210 - Event: Seminar
Title: On the origin of solar wind and solar coronal heating
Speaker: Vishal Upendran, Inter-University Centre for Astronomy and Astrophysics, Pune
Date: April 11, 2022
Time: 4:00-5:00 PM
Venue: Conference Room, HSB 203 - Event: Seminar
Title: Morphological statistics and their applications in cosmology
Speaker: Pravabati Chingangbam, Indian Institute of Astrophysics, Bengaluru
Date: April 7, 2022
Time: 4:00-5:00 PM
Venue: Bose Hall, HSB 210 - Event: Colloquium
Title: Unveiling the universe with gravitational-wave observations
Speaker: B. S. Sathyaprakash, Department of Physics, Pennsylvania State University, USA and School of Physics and Astronomy, Cardiff University, UK
Date: March 9, 2022
Time: 5:00-6:00 PM
Venue: Online - Event: Symposium
Title: Second Chennai Symposium on Gravitation and Cosmology
Dates: February 2-5, 2022
Time: 9:15 AM-8:00 PM
Venue: Online - Event: Symposium
Title: First Chennai Symposium on Gravitation and Cosmology
Dates: January 22-24, 2020
Time: 9:00 AM-6:00 PM
Venue: Hall 3, ICSR building - Event: Colloquium
Title: Quest for cosmic origin
Speaker: Tarun Souradeep, Department of Physics, Indian Institute of Science Education and Research, Pune
Date: September 18, 2019
Time: 5:00-6:00 PM
Venue: Central Lecture Theatre - Event: Seminar
Title: Searching for new physics on Earth and in the sky -- the case for inflaton and dark matter
Speaker: Arindam Chatterjee, Physics and Applied Mathematics Unit, Indian Statistical Institute, Kolkata
Date: August 22, 2019
Time: 4:00-5:00 PM
Venue: Conference Room, HSB 203 - Event: Seminar
Title: Spherical collapse of fuzzy dark matter
Speaker: V. Sreenath, Inter-University Centre for Astronomy and Astrophysics, Pune
Date: May 29, 2019
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: On dark matter self interactions, viscosity and cosmic expansion
Speaker: Abhishek Atreya, Bose Institute, Kolkata
Date: April 25, 2019
Time: 4:00-5:00 PM
Venue: Conference Room, HSB 203 - Event: Seminar
Title: Cosmic inflation: Cold or warm?
Speaker: Mayukh Raj Gangopadhyay, Saha Institute of Nuclear Physics, Kolkata
Date: March 5, 2019
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: The inflationary universe in F(R) gravity with antisymmetric tensor fields and their suppression during the universe evolution
Speaker: Tanmoy Paul, Indian Association for the Cultivation of Science, Kolkata
Date: February 22, 2019
Time: 4:00-5:00 PM
Venue: Bose Hall, HSB 210 - Event: Seminar
Title: Initial conditions for inflation in an FRW universe
Speaker: Swagat Saurav Mishra, Inter-University Centre for Astronomy and Astrophysics, Pune
Date: November 22, 2018
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: The information hidden in the shape of the CMB spectrum
Speaker: Rishi Khatri, Department of Theoretical Physics, Tata Institute of Fundamental Research, Mumbai
Date: September 27, 2018
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Public talk
Title: Dark matter, dark energy, Einstein's cosmological constant, and the accelerating universe
Speaker: Bharat Ratra, Department of Physics, Kansas State University, Manhattan, Kansas, USA
Date: August 13, 2018
Time: 5:00-6:00 PM
Venue: Bose Hall, HSB 210 - Event: Seminar
Title: The 'standard' model of cosmology ... and open questions
Speaker: Bharat Ratra, Department of Physics, Kansas State University, Manhattan, Kansas, USA
Date: August 13, 2018
Time: 2:30-3:30 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: Scales of gravity, and tensor bounds on the hidden universe
Speaker: Subodh Patil, Neils Bohr Institute, University of Copenhagen, Copenhagen, Denmark
Date: July 3, 2018
Time: 4:00-5:00 PM
Venue: Bose Hall, HSB 210 - Event: Seminar
Title: The locations of gravitational collapse: analytical insights and open issues
Speaker: Aseem Paranjape, Inter-University Centre for Astronomy and Astrophysics, Pune
Date: April 12, 2018
Time: 4:00-5:00 PM
Venue: Bose Hall, HSB 210 - Event: Colloquium
Title: The limits of cosmology
Speaker: Joseph Silk, Institut d'Astrophysique de Paris, Paris, France/Johns Hopkins University, Baltimore, USA/Gresham College, London, UK
Date: April 11, 2018
Time: 5:00-6:00 PM
Venue: Bose Hall, HSB 210 - Event: Seminar
Title: Cosmological observables and the nature of dark matter
Speaker: Shiv Kumar Sethi, Raman Research Institute, Bengaluru
Date: March 22, 2018
Time: 4:00-5:00 PM
Venue: Bose Hall, HSB 210 - Event: Meeting
Title: A day of gravitation and cosmology
Date: January 26, 2018
Time: 9:00 AM-5:00 PM
Venue: Bose Hall, HSB 210 - Event: Popular talk
Title: Ancient light: the microwave background radiation and cosmology
Speaker: Mark Birkinshaw, School of Physics, University of Bristol, Bristol, UK
Date: January 22, 2018
Time: 5:00-6:00 PM
Venue: Bose Hall, HSB 210 - Event: Seminar
Title: Probing dark energy with gravitational lensing
Speaker: Arun Kannawadi, Leiden Observatory, Netherlands
Date: December 12, 2017
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: Observational insights into black hole feedback at high-redshift
Speaker: Darshan Kakkad, European Southern Observatory, Garching, Germany
Date: September 12, 2017
Time: 3:00-4:00 PM
Venue: Seminar Hall, HSB 209 - Event: Colloquium
Title: Measuring the expansion history of the universe with supernovae type Ia: successes and pitfalls
Speaker: Roberto Trotta, Astrophysics Group, Imperial College, London, UK
Date: February 13, 2017
Time: 5:00-6:00 PM
Venue: Central Lecture Theatre - Event: GIAN course
Title: Origin and evolution of perturbations during inflation and reheating
Speaker: Jérôme Martin, Institut d’Astrophysique de Paris, Paris, France
Dates: November 25-30, 2016
Time: 8:45 AM-3:30 PM
Venue: MSB 360 and Bose Hall, HSB 210
The course had consisted of 11 lectures, which are available as videos at the following links: Lecture 1, Lecture 2, Lecture 3, Lecture 4, Lecture 5, Lecture 6, Lecture 7, Lecture 8, Lecture 9, Lecture 10, Lecture 11. - Event: Seminar
Title: Observing the mysterious epoch of reionization using the 21 cm line
Speaker: Suman Majumdar, Astrophysics Group, Imperial College, London, U.K.
Date: November 16, 2016
Time: 3:00-4:00 PM
Venue: HSB 310 - Event: Colloquium
Title: Gravitation and the cosmos: 100 years after Einstein's discovery of general relativity
Speaker: Abhay Ashtekar, Institute for Gravitation and the Cosmos, Pennsylvania State University, State College, U.S.A.
Date: October 7, 2015
Time: 5:00-6:00 PM
Venue: Central Lecture Theatre - Event: Meeting
Title: One-day meeting on black holes and cosmology
Date: October 6, 2015
Time: 9:00 AM-5:30 PM
Venue: Seminar Hall, HSB 209 - Event: Introductory talk
Title: Understanding the universe through cosmic microwave background radiation
Speaker: T. R. Seshadri, Department of Physics and Astrophysics, University of Delhi, Delhi
Date: September 18, 2015
Time: 3:30-4:30 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: Gravitinos, reheating and the matter-antimatter asymmetry of the universe
Speaker: Raghavan Rangarajan, Physical Research Laboratory, Ahmedabad
Date: April 23, 2015
Time: 3:00-4:00 PM
Venue: Seminar Hall, HSB 209 - Event: Colloquium
Title: Latest cosmological results from the Planck space mission
Speaker: François Bouchet, Institut d’Astrophysique de Paris, Paris, France
Date: April 8, 2015
Time: 5:00-6:00 PM
Venue: Central Lecture Theatre - Event: Seminar
Title: Gravity waves from inflation and the Lyth bound
Speaker: Aditya Aravind, Texas Cosmology Center, The University of Texas at Austin, Austin, USA
Date: August 11, 2014
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: Correlating features in the primordial spectra, or, what was the inflaton?
Speaker: Subodh Patil, CERN, Geneva, Switzerland
Date: August 6, 2014
Time: 3:00-4:00 PM
Venue: Seminar Hall, HSB 209 - Event: Colloquium
Title: Inflation after Planck
Speaker: Jérôme Martin, Institut d’Astrophysique de Paris, Paris, France
Date: February 19, 2014
Time: 5:00-6:00 PM
Venue: Physics Lecture Theatre - Event: Seminar
Title: CSL as a plausible mechanism for quantum to classical transition of primordial perturbations
Speaker: Suratna Das, Tata Institute of Fundamental Research, Mumbai
Date: January 30, 2014
Time: 5:00-6:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: Curvature couplings of the inflaton
Speaker: Subhendra Mohanty, Physical Research Laboratory, Ahmedabad
Date: January 16, 2014
Time: 5:00-6:00 PM
Venue: Conference Room, HSB 203 - Event: Seminar
Title: Probing the universe with redshifted HI 21-cm radiation
Speaker: Somnath Bharadwaj, Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur
Date: December 12, 2013
Time: 4:00-5:00 PM
Venue: Conference Room, HSB 203 - Event: Seminar
Title: Primordial magnetic fields and early structure formation in the universe
Speaker: Kanhaiya Lal Pandey, Raman Research Institute, Bengaluru
Date: August 20, 2013
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: A needlet ILC analysis of WMAP 9-year data
Speaker: Soumen Basak, Service d'Astrophysique, Centre d'Etudes de Saclay, France
Date: July 16, 2013
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: Anisotropic non-Gaussianity with non-commutative spacetime
Speaker: Akhilesh Nautiyal, Institute of Mathematical Sciences, Chennai
Date: April 18, 2013
Time: 5:00-6:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: Cosmological implications of primordial magnetic fields
Speaker: Shiv Kumar Sethi, Raman Research Institute, Bengaluru
Date: March 12, 2013
Time: 5:00-6:00 PM
Venue: Seminar Hall, HSB 209 - Event: Pedagogical lecture
Title: Einstein is Newton in space curved
Speaker: Naresh Dadhich, Inter-University Centre for Astronomy and Astrophysics, Pune and Centre for Theoretical Physics, Jamia Millia Islamia, New Delhi
Date: February 1, 2013
Time: 12:00 Noon-1:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: The gravitational equation in higher dimensions
Speaker: Naresh Dadhich, Inter-University Centre for Astronomy and Astrophysics, Pune and Centre for Theoretical Physics, Jamia Millia Islamia, New Delhi
Date: January 31, 2013
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: (Loop) quantum gravity and spacetime structure
Speaker: Rakesh Tibrewala, Department of Physics, Indian Institute of Science Education and Research, Thiruvananthapuram
Date: November 2, 2012
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Colloquium
Title: Matters of gravity
Speaker: T. Padmanabhan, Inter-University Centre for Astronomy and Astrophysics, Pune
Date: October 10, 2012
Time: 5:00-6:00 PM
Venue: Physics Lecture Theatre - Event: Seminar
Title: Geometrical and topological properties of excursion sets of the CMB
Speaker: Pravabati Chingangbam, Indian Institute of Astrophysics, Bangalore
Date: September 12, 2012
Time: 5:00-6:00 PM
Venue: Seminar Hall, HSB 209 - Event: Seminar
Title: Probing primordial magnetic fields with cosmic microwave background radiation
Speaker: T. R. Seshadri, Department of Physics and Astrophysics, University of Delhi, Delhi
Date: May 17, 2012
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209 - Event: Extra Mural Lecture
Title: How well do we know our universe?
Speaker: Jayant Narlikar, Inter-University Centre for Astronomy and Astrophysics, Pune
Date: February 3, 2012
Time: 7:30-8:30 PM
Venue: Central Lecture Theatre - Event: Seminar
Title: The theory of inflationary perturbations
Speaker: Jérôme Martin, Institut d’Astrophysique de Paris, Paris, France
Date: February 3, 2012
Time: 4:00-5:00 PM
Venue: Seminar Hall, HSB 209
