Colloquium by Prof. Bhal Chandra Joshi (National Centre for Radio Astrophysics, Pune) @ Dept. of Physics (Physics Dept, BITS-HYD), BITS Pilani, Hyderabad Campus (BITS Hyderabad). Title: Using Galactic Clocks to Observe The Universe In Long Wavelength Gravitational Wave Date: September 11, 2023 Time: 5 pm Venue: F207

The IPTA gravitational wave analysis group just finished a comparison of the PTA (NANOGrav PFC European Pulsar Timing Array InPTA) results published this past summer.  You can read all about it here: arxiv.org/abs/2309.00693 🧵

NANOGrav PFC European Pulsar Timing Array InPTA The properties of the GW background seen independently by EPTA+InPTA, NANOGrav, and PPTA are consistent

Right now the IPTA is busy at work combining data from European Pulsar Timing Array , InPTA , African Pulsar Timing | APT , NANOGrav PFC, and CSIRO_ATNF to make the third data release from the IPTA, IPTA-DR3.  The fully combined data will be even more sensitive than the simple extensions shown above!

Four pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohertz gravitational wave background (GWB). But how similar are these results, even after each PTA made different choices for modeling their data?

Our latest #ipta paper comparing the June 29 results from European Pulsar Timing Array , InPTA , NANOGrav PFC , CSIRO_ATNF is now on arxiv: arxiv.org/pdf/2309.00693 In this study, we compared the GWB properties from each PTA and also the Noise properties of each pulsar from different PTA. #GWB

Happy Diwali! 🪔 NANOGrav PFC European Pulsar Timing Array International Pulsar Timing Array African Pulsar Timing | APT CSIRO_ATNF OzGrav (animation of vela pulsar-credit: Joeri van Leeuwen) #DiwaliCelebration #PulsarAstronomy

IISER Kolkata Integrated PhD student Yoshita Baruah of Physics and CESSI Space Weather activities are spotlighted in nature. For details see nature.com/articles/d4158…

During the second day of #ASI2024, Prof. B.C. Joshi, currently the Raja Ramanna Chair Professor at #NCRA-TIFR, delivered a plenary talk focussing on pulsar timing array experiments and their pursuit of detecting nanohertz gravitational waves. ASI Public Outreach and Education Committee #pulsars #PTA #GW #SGWB

Celebrating 109 birth anniversary of John Tukey, a pioneer of data science, master statistician, of Cooley- Tukey FFT algorithm used extensively in radio astronomy and elsewhere and who coined the term "bit".

¡ uɐsɐɐɥsɹıɥs sı sıɥʇ ˙ʎɐp ɐƃoʎ Ɩɐuoıʇɐuɹǝʇuı uo sǝɥsıʍ ʇsǝq

Life Update: Forgot to mention that I joined Max Planck Institute für Radioastronomie for my PhD :)

InPTA members at #IPTAScienceWeek2024 1. with Prof. Jocelyn Bell ✨ 2. Dr. Prerna Rana Prerna Rana presenting the upcoming DR2 results 3. Dr. Jaikhomba Singha Jaikhomba Singha presenting the new scatter broadening estimation technique.

🚀🇩🇪 InPTA at SKAO 2025! Dr. Manoneeta Chakraborty (IIT Indore) & Dr. Krishnakumar M.A. (NCRA Pune) represented InPTA at the SKAO Science Meeting in Görlitz, Germany (June 16–20) discussing the future of radio astronomy & GW science at DZA.📡 #InPTA #SKAO2025 #GW #RadioAstronomy

The Indian Pulsar Timing Array is preparing to share something exciting. Stay tuned!!! — the skies have a story to tell. #InPTA #Pulsars #RadioAstronomy #GravitationalWaves #StayTuned

Exactly 8 years ago, detection of #gravitationalwaves from the binary neutron star merger #GW170817 unfolded a new era of multi-messenger astronomy✨ Recently, a workshop was held at The Institute of Mathematical Sciences to discuss about the state-of-the-art in neutron stars & multi-messenger astronomy