Results 11 to 20 of about 999,597 (267)

Spectral Lines from Rotating Neutron Stars [PDF]

, 2002
The line profiles from rotating neutron stars are affected by a number of relativistic processes such as Doppler boosts, strong self-lensing, frame-dragging, and the differential gravitational redshift arising from the stellar oblateness. In this Letter,
Ozel, Feryal, Psaltis, Dimitrios
core   +2 more sources

The Magnetic Sensitivity of the (250–278 nm) Fe ii Polarization Spectrum

The Astrophysical Journal, 2023
This paper presents a theoretical investigation of the polarization and magnetic sensitivity of the near-ultraviolet (near-UV) solar spectral lines of Fe ii between 250 and 278 nm.
David Afonso Delgado, Tanausú del Pino Alemán, Javier Trujillo Bueno   +2 more
doaj   +1 more source

Diagnostics of Coronal Magnetic Fields Through the Hanle Effect in UV and IR Lines [PDF]

, 2016
The plasma thermodynamics in the solar upper atmosphere, particularly in the corona, are dominated by the magnetic field, which controls the flow and dissipation of energy.
Fineschi, S., Gibson, S., Raouafi, N. E., Riley, P., Solanki, S. K.   +4 more
core   +2 more sources

The Belgian Repository of Fundamental Atomic Data and Stellar Spectra (BRASS)

Atoms, 2019
Background: BRASS (Belgian Repository of Fundamental Atomic Data and Stellar Spectra) is an international networking project for the development of a new public database providing accurate fundamental atomic data of vital importance for stellar ...
Alex Lobel, Pierre Royer, Christophe Martayan, Michael Laverick, Thibault Merle, Mathieu Van der Swaelmen, Peter A. M. van Hoof, Marc David, Herman Hensberge, Emmanuel Thienpont   +9 more
doaj   +1 more source

Stark Broadening of Zn III Spectral Lines

Universe, 2022
Stark widths for spectral lines within 24 multiplets of Zn III singlets and triplets have been calculated using modified semiempirical method for an electron density of 1017 cm−3 and temperatures from 5000 K up to 100,000 K.
Milan S. Dimitrijević, Magdalena D. Christova   +1 more
doaj   +1 more source

On the stark broadening of Os II spectral lines [PDF]

Bulletin of Natural Sciences Research, 2020
Stark broadening parameters, full widths at half maximum (FWHM) and shifts for 13 Os II lines have been calculated. The plasma parameters are: electron density of 1017 cm-3 and temperatures from 5 000 K to 80 000 K.
Dimitrijević Milan S.
doaj  

Stark Broadening of Al IV Spectral Lines

Universe, 2023
Stark widths for 23 transitions in Al IV have been calculated by employing the modified semiempirical method. The results are obtained for an electron density of 1017 cm−3 and temperatures from 10,000 K to 160,000 K.
Milan S. Dimitrijević, Magdalena D. Christova   +1 more
doaj   +1 more source

Fluorescent Excitation of Spectral Lines in Planetary Nebulae [PDF]

, 2000
Fluorescent excitation of spectral lines is demonstrated as a function of temperature-luminosity and the distance of the emitting region from the central stars of planetary nebulae.
Ahern F. J., Aller L. H., Anil K. Pradhan, Chen G. X., Chen G. X., Guo Xin Chen, Hummer D. G., Hyung S., Hyung S., Hyung S., Lucy L. B., Nussbaumer H., Seaton M. J.   +12 more
core   +3 more sources

A high resolution line survey of IRC+10216 with Herschel. First results: Detection of warm silicon dicarbide SiC2 [PDF]

, 2010
We present the first results of a high-spectral-resolution survey of the carbon-rich evolved star IRC+10216 that was carried out with the HIFI spectrometer onboard Herschel. This survey covers all HIFI bands, with a spectral range from 488 to 1901GHz. In
Agúndez, M., Barlow, M. J., Benz, A., Cernicharo, J., Crimier, N., Daniel, F., De Beck, E., de Koter, A., Decin, L., Di Giorgio, A. M., Enrenaz, P., Erickson, N., Erickson, Neal A., Fich, M., Gaier, T., García-Lario, P., Goicoechea, J. R., Khouri, T., Liseau, R., Lombaert, R., Müller, H. S. P., Pardo, J. R., Pearson, J. C., Shipman, R., Sánchez Contreras, C., Teyssier, D., Tielens, A. G. G. M., Waters, L. B. F. M.   +27 more
core   +8 more sources

Joint Detection and Reconstruction of Weak Spectral Lines under Non-Gaussian Impulsive Noise with Deep Learning

Remote Sensing, 2023
Non-Gaussian impulsive noise in marine environments strongly influences the detection of weak spectral lines. However, existing detection algorithms based on the Gaussian noise model are futile under non-Gaussian impulsive noise.
Zhen Li, Junyuan Guo, Xiaohan Wang
doaj   +1 more source