exoplanet-research

A Python pipeline that downloads NASA TESS light curves, searches them for the periodic dips of transiting exoplanets, fits each signal with an MCMC transit model, and vets it against eclipsing binaries and other false positives. https://tess.mit.edu/

GitHub profile hub for Biswajit Jana, connecting astrophysics, astronomical instrumentation, exoplanet research, scientific computing, reproducible data analysis and the strongest public research repositories in the portfolio.

Open exoplanet-discovery laboratory for transit and radial-velocity signals, candidate testing, public data and reproducible detection workflows. Uses reproducible numerical experiments, parameter exploration and quantitative scientific visualization.

Research portfolio of Biswajit Jana covering astrophysics, astronomical instrumentation, exoplanets, precision radial-velocity spectroscopy, scientific computing, open research projects and interactive scientific tools.

Interactive radial-velocity and Doppler-spectroscopy observatory connecting stellar spectra, wavelength shifts, orbital motion and exoplanet signals with the measurement challenges of precision radial-velocity astronomy.

Interactive exoplanet transit-analysis laboratory for real and simulated light curves, transit geometry, residual structure, target comparison, time-series diagnostics and reproducible visual exploration of transit evidence.

Archive-driven, reproducible search for Earth-like exoplanets using public catalogues, habitable-zone filters, planetary parameters, Bayesian reasoning, provenance checks and interactive visual analysis to narrow thousands of records into high-interest candidates.

Hybrasil is a map of every known Exoplanet and Star System with a planet or planet candidate out to 100 ly.

Dense hot-Saturn study pairing real TESS transit analysis with JWST atmospheric context for carbon dioxide, water and HD 149026 b's unusually large heavy-element inventory.

Hot-Saturn atmosphere study pairing a timing-adjusted TESS transit with public JWST/NIRSpec transmission spectroscopy, including the prominent carbon-dioxide feature and reproducible spectral diagnostics.

Ultra-hot Jupiter atmosphere study using phase-resolved JWST/NIRSpec G395H emission spectroscopy to measure day-night brightness-temperature contrast, with reproducible uncertainty propagation and archive-backed system context.

Mini-Neptune climate study using public JWST/MIRI phase-curve spectra to infer wavelength-dependent day/night brightness temperatures for GJ 1214 b and test thermal-emission structure behind its historically flat transmission spectrum.

Temperate sub-Neptune transit study in a compact M-dwarf system, using real TESS photometry to examine timing and transit support while stating the limits of broadband data for atmospheric claims.

Extreme low-density giant-planet transit study using real TESS photometry to examine timing, depth and correlated-noise behavior for the highly inflated, low-gravity atmosphere of WASP-127 b.

Hot-Jupiter atmosphere study using public JWST/NIRCam transmission spectroscopy to measure spectral contrasts and compare them with published H2S and molecular-detection evidence for HD 189733 b.

Highly inflated hot-Jupiter study combining a corrected TESS transit with three independent JWST/NIRISS dayside-emission reductions to examine water emission and reduction consistency.

Nearby super-Earth transit study at the rocky/volatile-rich atmosphere boundary, using real TESS photometry, timing-aware fitting and reproducible diagnostics with NASA Exoplanet Archive provenance.

Warm super-Earth transit study using multiple TESS sectors to test consistency, timing and correlated noise, explicitly preserving mixed evidence rather than over-combining weak detections.

Reduced-order likelihood inference on the public four-instrument JWST WASP-39 b benchmark spectrum, with explicit model-inadequacy diagnostics.

Hot-Neptune desert case study using real TESS transit photometry, timing diagnostics and literature context for LTT 9779 b's unusually reflective cloudy dayside and survival in a sparsely populated regime.