Zobrazeno 1 - 10
of 155 197
pro vyhledávání: '"absorption and emission"'
According to modern cosmological models, galaxies are embedded within cosmic filaments, which supply a continuous flow of pristine gas, fueling star formation and driving their evolution. However, due to their low density, the direct detection of dif
Externí odkaz:
http://arxiv.org/abs/2412.04546
Autor:
Luminari, Alfredo, Piconcelli, Enrico, Tombesi, Francesco, Nicastro, Fabrizio, Fiore, Fabrizio
Fast, massive winds are ubiquitously observed in the UV and X-ray spectra of Active Galactic Nuclei (AGN) and other accreting sources. Theoretical and observational evidences suggest they are launched at accretion disc scales, carrying significant ma
Externí odkaz:
http://arxiv.org/abs/2410.13933
Autor:
Xu, Xinfeng, Henry, Alaina, Heckman, Timothy, Carr, Cody, Strom, Allison L., Jones, Tucker, Berg, Danielle A., Chisholm, John, Erb, Dawn, James, Bethan L., Jaskot, Anne, Martin, Crystal L., Mingozzi, Matilde, Senchyna, Peter, Roy, Namrata, Scarlata, Claudia, Stark, Daniel P.
Galactic outflows provide important feedback effects to regulate the evolution of the host galaxies. Two primary diagnostics of galactic outflows are broad and/or blueshifted emission and absorption lines. Even though well-established methods exist t
Externí odkaz:
http://arxiv.org/abs/2409.19776
Autor:
Pereira-Santaella, Miguel, González-Alfonso, Eduardo, García-Bernete, Ismael, Donnan, Fergus R., Santa-Maria, Miriam G., Goicoechea, Javier R., Lamperti, Isabella, Perna, Michele, Rigopoulou, Dimitra
Publikováno v:
A&A 689, L12 (2024)
We study the 3.4-4.4$\mu$m fundamental rovibrational band of H3+, a key tracer of the ionization of the molecular interstellar medium (ISM), in a sample of 12 local (d< 400 Mpc) ultra/luminous infrared galaxies (U/LIRGs) observed with JWST/NIRSpec. T
Externí odkaz:
http://arxiv.org/abs/2408.14545
Using a formalism based on the non-Abelian Berry connection, we explore quantum geometric signatures of Wannier-Stark spectra in two-dimensional superlattices. The Stark energy can be written as \textit{intraband} Berry phases, while Zener tunneling
Externí odkaz:
http://arxiv.org/abs/2407.14670
We study tree-level scattering processes of arbitrary string states using the DDF formalism and suitable coherent vertex operators. We obtain new exact compact formulae for heavy-heavy-light-light scattering amplitudes in open or closed bosonic strin
Externí odkaz:
http://arxiv.org/abs/2407.16476
Publikováno v:
Proceedings of the National Academy of Sciences of the USA, volume 121, issue 37, article e2410280121 (2024)
We present Einstein coefficient spectra and a detailed-balance derivation of generalized Einstein relations between them that is based on the connection between spontaneous and stimulated emission. If two broadened levels or bands overlap in energy,
Externí odkaz:
http://arxiv.org/abs/2405.13742
Autor:
Márkus, Ferenc1 (AUTHOR) markus.ferenc@ttk.bme.hu, Gambár, Katalin2,3 (AUTHOR) gambar.katalin@uni-obuda.hu
Publikováno v:
Symmetry (20738994). Dec2024, Vol. 16 Issue 12, p1559. 18p.
Autor:
Merkhatuly, Nurlan1 (AUTHOR) nurlanmerhatuly@mail.ru, Iskanderov, Amantay1 (AUTHOR) nurlanmerhatuly@mail.ru, Abeuova, Saltanat2 (AUTHOR) abeuova.salta@gmail.com, Iskanderov, Ablaykhan1 (AUTHOR), Zhokizhanova, Saltanat3 (AUTHOR) saltanat_zh75@mail.ru
Publikováno v:
Molecules. Nov2024, Vol. 29 Issue 21, p5041. 10p.
Autor:
Heintz, K. E., Brammer, G. B., Watson, D., Oesch, P. A., Keating, L. C., Hayes, M. J., Abdurro'uf, Arellano-Córdova, K. Z., Carnall, A. C., Christiansen, C. R., Cullen, F., Davé, R., Dayal, P., Ferrara, A., Finlator, K., Fynbo, J. P. U., Flury, S. R., Gelli, V., Gillman, S., Gottumukkala, R., Gould, K., Greve, T. R., Hardin, S. E., Hsiao, T. Y. -Y, Hutter, A., Jakobsson, P., Killi, M., Khosravaninezhad, N., Laursen, P., Lee, M. M., Magdis, G. E., Matthee, J., Naidu, R. P., Narayanan, D., Pollock, C., Prescott, M., Rusakov, V., Shuntov, M., Sneppen, A., Smit, R., Tanvir, N. R., Terp, C., Toft, S., Valentino, F., Vijayan, A. P., Weaver, J. R., Wise, J. H., Witstok, J.
One of the surprising early findings with JWST has been the discovery of a strong "roll-over" or a softening of the absorption edge of Ly$\alpha$ in a large number of galaxies at ($z\gtrsim 6$), in addition to systematic offsets from photometric reds
Externí odkaz:
http://arxiv.org/abs/2404.02211