Blackboards & auditoria

Talks across
the map.

A selected, evolving archive of seminars, conference presentations and public lectures.

Schools, workshops & conferences

Selected presentations

01

Primordial features with a step and the tensor contribution

Cosmology Rapid Response Meeting, TIFR, Mumbai, 6–8 Apr 2010; 8th Meeting on Field Theoretic Aspects of Gravity, HNBGU Srinagar, 19–23 Apr 2010; Primordial Features and Non-Gaussianities, HRI Allahabad, 14–18 Dec 2010; poster, ICTP Summer School in Cosmology, 19–30 Jul 2010.

02

Oscillations in the inflaton potential

26th IAGRG Meeting, HRI Allahabad, 19–21 Jan 2011; Indo–UK Scientific Seminar, IUCAA Pune, 10–12 Aug 2011; COSMO 11, Porto, 22–26 Aug 2011.

03

On the discriminating power of fNL

UK Particle Cosmology Network, Portsmouth, 13–14 Sep 2011; International Conference on Gravitation and Cosmology, Goa, 14–19 Dec 2011.

04

Scalar bi-spectrum during inflation and preheating

Asia Pacific School / Workshop on Gravitation and Cosmology, Jeju Island, 19–22 Feb 2013.

05

Reconstructing the primordial power spectrum

Theories and Practices in Large Scale Structure Formation, APCTP Seoul, 15–16 Apr 2013.

06

Cosmological parameter estimation with free-form PPS

Reconstructing the Universe, IEU Seoul, 3–5 Jun 2013; 1st APCTP–NBIA Workshop, Pohang, 21–25 Oct 2013.

07

Reconstruction from WMAP and Planck

New Perspectives on Cosmology, APCTP, 25–29 Nov 2013; Cosmology and Fundamental Physics IV, APCTP, 5–15 Dec 2013.

08

Joining bits and pieces of reionization history

Concordances and Challenges in Cosmology after Planck, Sexten, 18–22 Feb 2019.

09

One spectrum to cure them all

40th meeting of the Astronomical Society of India, IIT Roorkee / online, 25–29 Mar 2022.

10

Conference contribution

Cosmological Tensions and its Implication to Concordance Cosmology, IFPU Trieste, 12–23 Jun 2023.

11

CMB Data: A Discussion on Physics and Systematics

4th BRICS–AGAC symposium, SGT University, Haryana, 17–19 Dec 2024.

12

Primordial Features and CMB Anomalies

Tensions and Anomalies on the Sky, Centre for Theoretical Physics, Jamia Millia Islamia, New Delhi, 6–8 Mar 2025.

13

ECHO from CMB Bharat

Rethinking Cosmology, Raman Research Institute, Bengaluru, 10 Dec 2025.

Seminar chronology

Seminars & lectures, 2011–2025

Local and non-local primordial features

ICTP Trieste; Royal Observatory Edinburgh; DAMTP Cambridge; APC and IAP Paris; CERN Cosmo Coffee and University of Geneva.

Reconstructing the primordial power spectrum

Bielefeld; Göttingen; Leiden; IAP and APC Paris — 9–18 July 2013.

Primordial power spectrum from Planck

University College London; Imperial College London; Kavli Institute for Cosmology Cambridge — 30 July–6 August 2014.

Assumptions, observations and parameter estimations

IUCAA Pune and TIFR Mumbai — 16–17 October 2014.

Testing the standard model of cosmology and beyond

Berkeley Center for Cosmological Physics and Princeton University — 6 and 18 April 2016.

Primordial Universe: the standard model and beyond

ICAP seminar, Institut d’Astrophysique de Paris — 20 April 2017.

Fingerprints of cosmic evolution in the photons of the Universe

Imperial College London — 12 June 2017.

Decoding cosmic fingerprints

Institute of Mathematical Sciences, Chennai — 1 June 2018.

The standard model of cosmology and beyond

Institute of Mathematical Sciences, Chennai — 4 June 2018.

The standard model and beyond: constraints and forecasts

Institute of Theoretical Astrophysics, University of Oslo — 20 September 2018.

Reconstructing the primordial Universe

Tufts University — 12 September 2019.

Reconstructing cosmological events at early and late times

Harvard–Smithsonian CfA and Brown University — 20 and 30 September 2019.

On the possibility of primordial features

Physics of the Early Universe online programme, ICTS.

Codes, Computations and Constraints in Cosmology

FACETS 2020 mathematics lecture series, IMSc.

Primordial black holes and small-scale gravitational waves in two-field models of inflation

Online seminar accompanying the PBH–SbGW–2FM slide archive.

Data analysis in cosmology and astroparticle physics

Six lectures, including hands-on sessions, at the school-cum-workshop hosted by the Technology Innovation Hub, ISI Kolkata.

School programme ↗

Primordial features: how relevant are they?

A three-stop sequence at IIT Madras, IIT Hyderabad and Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math.

Cosmological perturbations

Lectures at the First IAGRG School on Gravitation and Cosmology.

School page ↗

One spectrum to cure them all

Seminars at École normale supérieure, Institut d’Astrophysique de Paris, Astroparticule et Cosmologie, and the University of Bologna.

Reionization: Joining Bits and Pieces from Different Times

Seminar at the Osservatorio di Astrofisica e Scienza dello Spazio (INAF–OAS), Bologna, Italy.

Tensions in Cosmology: New Physics vs. Systematics

Cosmo-coffee seminar at CERN, Geneva.

A brief history of our Universe — as observed from multiple windows

Public lecture for National Space Day at the Centre for Astronomy and Planetary Sciences, Patrician College, Chennai.

Legacy files

Slide archive

Talks on epidemiology

Looking back, looking forward: the science of the COVID-19 pandemic

IMSc mini-symposium, Chennai, 28 June 2021; plus a short talk on the INDSCI-SIM model for COVID-19 in India.