Observatoire de Paris

A 4200-hour HyperFlash and ÉCLAT campaign on the hyperactive FRB 20240114A: constraining energetics with the most brilliant bursts

Abstract Hyperactive repeaters provide a unique window into the evolving environments and energy budgets of fast radio burst (FRB) sources, though they may not be representative of the FRB population in general. High-cadence observations are key to capturing the rarest and most e...

Breaking the Blend: A multi-tracer kinematic decomposition method for IFS data applied to disentangling the AGN outflow and circumnuclear ring in NGC 5728 with JWST

Abstract Integral field spectroscopy (IFS) of the central kiloparsecs of active galactic nuclei (AGN) reveals a mixture of spatially coincident emission from star-formation and AGN feedback exciting the interstellar medium. Disentangling these components remains a challenge, as m...

Making an Annotated and Curated Corpus of Heliophysics Literature for Named Entity Recognition

Presentation for the DASH/IHDEA 2026 meeting in Dublin, Ireland. It relates about the work of Sébastien Durna, intern at Paris Observatory on the creation of a pre-annotated corpus for heliophysics named entity recognition using language models, and the thesis of Liza Fretel on t...

Generalized Nonlinear Bayesian Pulsar Timing with ENTERPRISE

Abstract We use the Bayesian methods in the ENTERPRISE package to examine the fully general parameterization of pulsar timing models in tandem with noise. We investigate four pulsars, PSRs J1600–3053, J2043+1711, J0740+6620, and J1640+2224, through the lens of Bayesian timing. We...

Evaluation of ASCAT soil moisture retrievals and their potential to detect intraday variability

Accurate sub-daily soil moisture (SM) retrievals from satellite observations remain a major challenge due to sparse temporal sampling and retrieval uncertainties. This study introduces a localized convolutional neural network (CNN-l) framework designed to enhance SM estimates fro...

Peganum harmala L.: Essential Oil Composition, Extraction Technologies, Biological Activities and Emerging Applications

Peganum harmala L. is a xerophytic medicinal and aromatic plant of considerable ethnopharmacological importance, characterized by a rich diversity of β-carboline alkaloids, phenolic compounds, and essential oil constituents. Despite increasing scientific interest, current knowled...

Biological Activities and In Silico Molecular Docking of an Aqueous Extract of Nigella sativa L. Seeds: A Focus on Antioxidant, Cytotoxic, and Diuretic Effects

Background: Nigella sativa L. is a medicinal plant widely recognized for its diverse pharmacological properties. This study aimed to evaluate the antioxidant, diuretic, and cytotoxic effects of an aqueous seed extract and its effects on selected biochemical parameters in rats. Th...

Post launch spectral and radiometric performances of MAJIS, the VIS-NIR imaging spectrometer of JUICE

Abstract. The post-launch spectral and radiometric performances of MAJIS, the VISNIR imaging spectrometer of the ESA Jupiter Icy Moon Explorer (JUICE), have been evaluated using observations performed during the Lunar-Earth Gravitational Assist (LEGA) of 19–20 August 2024 and obs...

Reimbursement status, access delays and prices of orphan drugs in France: a population-stratified analysis of indications approved between 2021 and 2024

Abstract Background More and more treatments are available for patients with rare diseases. However, a marketing authorization (MA) for a new treatment does not mean access in France for all patients. Moreover, while rare diseases affect children mostly, paradoxically it seems th...