Results 31 to 40 of about 1,596 (181)

Probing the 3D Structures of Supernovae through IR Signatures of CO and SiO

The Astrophysical Journal
We present a new public-domain Molecular Fitting Analysis Tool (MOFAT) designed to probe molecule-forming regions in supernovae through analysis of molecular features in the near- and mid-infrared.
T. Mera, P. Hoeflich, C. R. Burns, C. Ashall, K. Medler, E. Fereidouni, W. B. Hoogendam, M. Shahbandeh, S. Shiber, C. M. Pfeffer, E. Baron, J. Lu, N. Morrell, E. Y. Hsiao, M. M. Phillips   +14 more
doaj   +1 more source

JWST Low-resolution MIRI Spectral Observations of SN 2021aefx: High-density Burning in a Type Ia Supernova

The Astrophysical Journal Letters, 2023
We present a JWST/MIRI low-resolution mid-infrared (MIR) spectroscopic observation of the normal Type Ia supernova (SN Ia) SN 2021aefx at +323 days past rest-frame B -band maximum light.
J. M. DerKacy, C. Ashall, P. Hoeflich, E. Baron, B. J. Shappee, D. Baade, J. Andrews, K. A. Bostroem, P. J. Brown, C. R. Burns, A. Burrow, A. Cikota, T. de Jaeger, A. Do, Y. Dong, I. Dominguez, L. Galbany, E. Y. Hsiao, E. Karamehmetoglu, K. Krisciunas, S. Kumar, J. Lu, T. B. Mera Evans, J. R. Maund, P. Mazzali, K. Medler, N. Morrell, F. Patat, M. M. Phillips, M. Shahbandeh, S. Stangl, C. P. Stevens, M. D. Stritzinger, N. B. Suntzeff, C. M. Telesco, M. A. Tucker, S. Valenti, L. Wang, Y. Yang, S. W. Jha, L. A. Kwok   +40 more
doaj   +1 more source

Germanium‐Based Mid‐Infrared Integrated Photonics

Laser &Photonics Reviews, Volume 20, Issue 14, 22 July 2026.
The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini, Goran Z. Mashanovich, Milos Nedeljkovic, Carlos Alonso‐Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella   +6 more
wiley   +1 more source

EPISODE. II. Variability in the CO and H2O Rovibrational Absorption Lines in a Periodically Variable Protostar EC 53

The Astrophysical Journal
We present two-epoch JWST NIRSpec and MIRI observations of the young protostar EC 53 (V371 Ser), a periodically variable source with well-characterized quiescent and burst phases.
Seokho Lee, Jeong-Eun Lee, Chul-Hwan Kim, Jaeyeong Kim, Young-Jun Kim, Gregory J. Herczeg, Doug Johnstone, Giseon Baek, Yuri Aikawa, Joel D. Green, Yao-Lun Yang, Logan Francis, Klaus M. Pontoppidan, Ho-Gyu Lee, Takahiro Nagayama, Yoichi Itoh, Tomohito Ohshima, Jun Takahashi, Jun Toshikawa, Tomoki Saito, Motohide Tamura, Takayoshi Kusune   +21 more
doaj   +1 more source

Analysis of Optical Telescope Element (OTE) used in James Webb Space Telescope (JWST)

Defense and Security Studies
This paper presents an analysis of the James Webb Space Telescope (JWST) Optical Telescope Element (OTE) based on its published optical prescription and system architecture.
Alan Catovic, Dzan Jasarevic
doaj   +1 more source

Identifying and Predicting Coronal Mass Ejection Occurrence: Observational Checklists for Space Weather Forecasters

Space Weather, Volume 24, Issue 6, June 2026.
Abstract Ejections of magnetized plasma from the Sun, known as coronal mass ejections, can drive major geomagnetic activity if Earth‐directed, and are therefore monitored by space weather forecasters. The current focus being the forecast of the arrival time of a coronal mass ejection at Earth and the level of geomagnetic impact.
L. M. Green, A. W. James, N. Ngampoopun, S. L. Yardley, K. Waite, E. K. Mottram, J. Hernandez Camero, J. O'kane   +7 more
wiley   +1 more source

Understanding the James Webb Space Telescope

, 2022
Hamburg Aerospace Lecture Series --- Collection of Presentations --- http://www.AeroLectures ...
openaire   +2 more sources

Systems engineering on the James Webb Space Telescope [PDF]

SPIE Proceedings, 2010
The James Web Space Telescope (JWST) is a large, infrared-optimized space telescope scheduled for launch in 2014. System-level verification of critical performance requirements will rely on integrated observatory models that predict the wavefront error accurately enough to verify that allocated top-level wavefront error of 150 nm root-mean-squared (rms)
Michael T. Menzel, Marie Bussman, Michael Davis, Gary Golnik, Sandra Irish, Jon Lawrence, Richard Lynch, Peiman Maghami, Landis Markley, Kimberly Mehalick, Gary Mosier, Danniella Muheim, Keith Parrish, Shaun Thomson, Paul Geithner, Joseph Pitman, James Wehner, Jonathan Arenberg, Brian Costanza, Satya Anandakrishnan, William Burt, Reem Hejal   +21 more
openaire   +1 more source

Jupiter's Auroral Ionosphere: Hybrid Monte Carlo, Auroral Spectrum and Conductivity Modeling

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract We present a new model of auroral precipitation and associated phenomena at Jupiter, called the Jupiter Auroral Ionosphere Code (JAIC). The hybrid model follows the primary electron population using a Monte Carlo code that runs on a GPU, and computes the contribution of the secondaries using a two‐stream approximation.
J. D. Nichols
wiley   +1 more source

Science with the James Webb Space Telescope [PDF]

Proceedings of the International Astronomical Union, 2005
The scientific capabilities of the James Webb Space Telescope (JWST) fall into four themes. The End of the Dark Ages: First Light and Reionization theme seeks to identify the first luminous sources to form and to determine the ionization history of the universe.
openaire   +1 more source