The P-Cygni type profile in the Lyman alpha emission line of DLA 2233+131 ($z=3.15$) is noted to be similar to those found in the nearby galaxies and distant ($3 doi:10.48550/arXiv.astro-ph/9801031Ahn, Sang-HyeonLee, Hee-Wonphysics...
However, since the Earth's atmosphere is entirely opaque at wavelengths shorter than 300 nm, the first astrophysical observations of the Lyman alpha line were made only when rocketborne instruments were flown above the Earth's atmosphere. Solar Lyman alpha The solar Lyman Alpha emission wa ... ...
3. a.A range of values of a quantity or set of related quantities:the income spectrum. b.A sequence or range of related qualities, ideas, activities, entities, or phenomena:the whole spectrum of 20th-century thought; the spectrum of genes involved in the immune response. ...
The Lyman-alpha line of neutral hydrogen (Lyα; 1216 Å) is the most intense emission line in the quiescent solar spectrum (Curdt et al.2001). In spite of this, observations of flare-related Lyαemission have historically been relatively scarce. Among the earliest measurements of flare-relat...
Lyman-alpha {Lya} is intrinsically the strongest recombination line in HII nebulae, reprocessing around 1/3 of the ionizing energy. This fact, combined with a rest wavelength that makes it convenient for high redshift studies have made Lya the dominant spectral probe of galaxy formation and evolu...
3. Panels b-e show emission from individual regions near QSO, with vertical lines indicating features seen in the QSO absorption line spectrum which have counterparts (within 2Å) in the emission spectra. Line colors alternate for clarity. Supplementary information Supplementary Information ...
Lyman-alpha rocket spectra and models of the quiet and active solar chromosphere based on partial redistribution diagnostics We present Lα line profiles obtained with 0''.8 spatial resolution and 50 mA spectral resolution during the first rocket flight of the NRL High Resolution... GS Basri,JL...
3 METHODS AND ANALYSIS 4 DISCUSSION 5 SUMMARY ACKNOWLEDGEMENTS DATA AVAILABILITY Footnotes REFERENCES APPENDIX A: NIRCAM OBSERVATIONS OF LAES AND CANDIDATE COMPANION GALAXIES APPENDIX B: RELATING |$\xi _\mathrm{ion, \, 0}$| TO LY |$\alpha$| EW APPENDIX C: EMISSION-LINE MEASURE...
Lyman-alpha radiationLyman-alpha radiation[′lī·mən ′al·fə ‚rād·ē′ā·shən] (spectroscopy) Radiation emitted by hydrogen associated with the spectral line in the Lyman series whose wavelength is 121.5 nanometers.McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, ...
Lyman-alpha rocket spectra and models of the quiet and active solar chromosphere based on partial redistribution diagnostics We present Lα line profiles obtained with 0''.8 spatial resolution and 50 mA spectral resolution during the first rocket flight of the NRL High Resolution... GS Basri,JL...