T. P. Ray

Simulation of MKID Design Sensitivity to Fabrication Tolerances

Oisín Creaner, Cáthal McAleer, Gerhard Ulbricht, Gary Donegan et autres

Simulations of Microwave Kinetic Inductance Detectors (MKIDs) can be used to inform fabrication tolerances or design requirements. Frequency-domain multiplexing is used to allow thousands of MKIDs to be read on a single feedline. The signals are separated into frequency bins. For this …

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JWST/MIRI observations of the young TWA 27 system: hydrocarbon disk chemistry, silicate clouds, evidence for a CPD

P. Patapis, M. Morales-Calderón, Aditya M. Arabhavi, H. Kühnle et autres

The Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST) enables the characterisation of young self-luminous gas giants at previously inaccessible wavelengths, revealing physical processes in gas, dust, and clouds. We characterise the young planetary system TWA 27 (2M1207) in the …

Clumpy star formation and an obscured nuclear starburst in the luminous dusty z = 4 galaxy GN20 seen by MIRI/JWST (Corrigendum)

Arjan Bik, Javier Álvarez-Márquez, L. Colina, Alejandro Crespo Gómez et autres

Erratum This article is an erratum for: [https://doi.org/10.1051/0004-6361/202348845] ​​​​​​​

MIRI Deep Imaging Survey (MIDIS) of the Hubble Ultra Deep Field

Göran Östlin, Pablo G. Pérez‐González, Jens Melinder, Steven Gillman et autres

The recently launched James Webb Space Telescope (JWST) is opening new observing windows on the distant universe. Among JWST's instruments, the Mid Infrared Instrument (MIRI) offers the unique capability of imaging observations at wavelengths $λ> 5μ$m. This enables unique access to the …

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JWST Observations of Young protoStars (JOYS). HH 211: the textbook case of a protostellar jet and outflow

A. Caratti o Garatti, T. P. Ray, P. J. Kavanagh, M. J. McCaughrean et autres

We use the James Webb Space Telescope (JWST) and its Mid-Infrared Instrument (MIRI) (5-28 um), to study the embedded HH 211 flow. We map a 0.95'x0.22' region, covering the full extent of the blue-shifted lobe, the central protostellar region, and a small …

Spatially-resolved H$α$ and ionizing photon production efficiency in the lensed galaxy MACS1149-JD1 at a redshift of 9.11

J. Álvarez-Márquez, L. Colina, Alejandro Crespo Gómez, Pierluigi Rinaldi et autres

We present MIRI/JWST medium-resolution spectroscopy (MRS) and imaging (MIRIM) of the lensed galaxy MACS1149-JD1 at a redshift of $z$=9.1092$\pm$0.0002 (Universe age about 530 Myr). We detect, for the first time, spatially resolved H$α$ emission in a galaxy at a redshift above nine. …

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High-frequency transverse oscillations and intensity perturbations in spicular-type events

J. Shetye, D. Kuridze, M. Stangalini, J. G. Doyle et autres

Investigating the transport of angular momentum from young stellar objects

A. Chrysostomou, F. Bacciotti, B. Nisini, T. P. Ray et autres

Aims. In this pilot study, we examine molecular jets from the embedded Class I sources, HH 26 and HH 72, to search, for the first time, for kinematic signatures of jet rotation from young embedded sources.

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GRAVITATIONAL FIELD OF A GLOBAL MONOPOLE IN KALB–RAMOND BACKGROUND

Farook Rahaman, T. P. Ray, O. FARUK, Rajarshi Mukherjee et autres

The problem of global monopole in Kalb–Ramond background is investigated. A comparison is made with the corresponding results predicted by general relativity.

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Radio Jets - the View from Patras

T. P. Ray