Lyman-alpha
Comparison of Lyman-alpha and LI-COR infrared hygrometers for airborne measurement of turbulent fluctuations of water vapour
... a Lyman-alpha sensor L6 (Buck Research, USA), a capacitive Vaisala Humicap HMP110, a 1011B dew point mirror (General Eastern, USA; not used in this study) and the LI-7500 (same sensor as used for the Do128 ...
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Koehler, Ralf (2009): Constraining Cosmology with Lyman-alpha Emitters: a Study Using HETDEX Parameters. Dissertation, LMU München: Fakultät für Physik
... The properties of high redshift galaxies are, though under investigation form various groups (see Delliou et al., 2006; Ouchi et al., 2008; Gawiser et al., 2006), still poorly understood. Large samples of ...
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Predicting Lyman alpha escape fractions with a simple observable:Lyman alpha in emission as an empirically calibrated star formation rate indicator
... For our lower redshift sample, we explore a compilation of 30 sources presented in Verhamme et al. (2017) which have ac- curate (Hα derived) f esc,Lyα measurements and sample a range of galaxy properties. The sample ...
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Predicting Lyman alpha escape fractions with a simple observable:Lyman alpha in emission as an empirically calibrated star formation rate indicator
... For our lower redshift sample, we explore a compilation of 30 sources presented in Verhamme et al. (2017) which have ac- curate (Hα derived) f esc,Lyα measurements and sample a range of galaxy properties. The sample ...
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Chung, Andrew S. (2016): The long and winding road: lyman-alpha radiative transfer and galactic outflows. Dissertation, LMU München: Fakultät für Physik
... slaf (Super Lyman Alpha Fighter) is a new 3D monte-carlo Lyα radiative transfer code similar to (Zheng & Miralda-Escud´e, 2002; Cantalupo et al., 2005; Dijkstra et al., 2006a; Tasitsiomi, 2006; Verhamme ...
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Jeeson Daniel, Akila (2012): Effect of inter-galactic medium on the observability of lyman alpha emitters around the epoch of reionization. Dissertation, LMU München: Fakultät für Physik
... studies. Lyman Alpha Emitters (LAEs), due to their strong Lyα emission line which scatters for even tiny amounts of neutral hydrogen, are used as one of the tools to probe the ...
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The Lyman-alpha forest as a diagnostic of the nature of the dark matter
... optical depth, τ eff = 3.0 for z = 5.4, and mimic the spectral resolution and pixel size of the HIRES spectrograph on the KECK telescope (FWHM = 6.7 km s −1 , pixel size = 2.1 km s −1 (see Section 2) but without adding ...
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MUSEQuBES CGM Surveys: From Low-z Star-forming Galaxies to High-z Lyman-alpha Emitters
... MUSEQuBES Collaboration: Joop Schaye ( PI ), Lorrie Straka, Marijke Segers, Sean Johnson, Martin Wendt, Raffaella Anna Marino, Sebastiano Cantalupo +. MUSE consortium[r] ...
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The Lyman alpha luminosity function at z=5 7 6 6 and the steep drop of the faint end:implications for reionization
... Due to its resonant nature, Lyα photons are easily scat- tered by neutral hydrogen (and also easily absorbed by dust; e.g. Hayes et al. 2011). As a consequence, the observability of Lyα can in principle be used as a ...
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New constraints on the free streaming of warm dark matter from intermediate and small scale Lyman alpha forest data
... from Lyman- α flux-power ...the Lyman-α flux-power spectrum on the free- streaming of dark matter, cosmological parameters, as well as the thermal history of the intergalactic medium (IGM) with ...
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The nature of luminous Lyman alpha emitters at z~2 3:maximal dust poor starbursts and highly ionising AGN
... selecting Lyman- break galaxies has resulted in statistically large samples, but failed to reveal a convincing population of Lyman continuum (LyC) leakers ...as Lyman- break galaxies (LBGs) are ...
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Mesospheric Removal of Very Long-Lived Greenhouse Gases SF6 and CFC-115 by Metal Reactions, Lyman-alpha Photolysis, and Electron Attachment
... including Lyman- α ) does not make a signi fi cant contribution to the photodissociation rate of CFC- 115 (see Figure 7), we have therefore used the Doucet et ...the Lyman- α measurements from the present ...
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ALMA observations of a $z$ ≈ 3.1 Protocluster: Star Formation from Active Galactic Nuclei and Lyman-Alpha Blobs in an Overdense Environment
... 3 RESULTS Overall we detected six sources at 870 µm within the primary beam of the eight ALMA maps: three of the eight X-ray AGNs have ALMA counterparts, all of the four LABs have an ALM[r] ...
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Pahl, Anette (2002): Erzeugung von kontinuierlicher kohärenter Lyman-alpha-Strahlung zur 1S-2P-Spektroskopie an Antiwasserstoff. Dissertation, LMU München: Fakultät für Physik
... In diesem Kapitel werden allgemeine Grundlagen zur nichtlinearen Optik im Hinblick auf Vier–Wellen–Mischung mit Summenfrequenzbildung in atoma- rem Quecksilberdampf beschrieben. Ausgehend von den Maxwellgleichungen wird ...
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New approach for precise computation of Lyman alpha forest power spectrum with hydrodynamical simulations
... of the intergalactic medium. By varying the input parameters around a central model chosen to be in agreement with the latest Planck results, we built a grid of simulations that allows the study of the impact on the flux ...
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Lyman alpha signatures from direct collapse black holes
... Alternatively, our radiative transfer calculations through simplified representations of the DCBH formation process can reproduce the observed the spectral line shape of CR7 when the gas[r] ...
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Suite of hydrodynamical simulations for the Lyman alpha forest with massive neutrinos
... surveys, Lyman-α (Lyα), or 21 cm probes where the underlying tracer is neutral hydrogen (HI), the study of galaxy clusters via the Sunyaev-Zel’dovich (SZ) effect, and the characterization of the cosmic shear ...
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Constraining the temperature–density relation of the intergalactic medium with the Lyman alpha and beta forests
... The post-reionization thermal state of the intergalactic medium is characterized by a power-law relationship between temperature and density, with a slope determined by the parameter γ . We describe a new method to ...
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First constraints on fuzzy dark matter from Lyman alpha forest data and hydrodynamical simulations
... from Lyman-α forest ...the Lyman- α flux power spectrum in these models and compare with the observed flux power spectrum from two different data sets: the XQ-100 and HIRES/MIKE quasar spectra ...
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About AGN ionization echoes, thermal echoes, and ionization deficits in low redshift Lyman-alpha blobs
... to the most powerful AGN, the absence of the latter in X-rays does not necessarily mean Compton-thick obscuration. The GBs and the associated LABs published in t[r] ...
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