The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI - Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections

By P. Kalberla, W. B. Burton, D. Hartmann, E. M. Arnal, E. Bajaja, R. Morras, W. Institut, U. Bonn, S. Leiden, Nrao and 4 more. 2005

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We present the final data release of observations of ?21-cm emission from Galactic neutral hydrogen over the entire sky, merging the Leiden/Dwingeloo Survey (LDS: Hartmann & Burton 1997, Atlas of Galactic Neutral Hydrogen) of the sky north of ? = ?30? with the Instituto Argentino de Radioastronomia Survey (IAR: Arnal et al. 2000, AA and Bajaja et al. 2005, A&A, 440, 767) of the sky south of ? = ?25?. The angular resolution of the combined material is HPBW ? 0. ?6. The LSR velocity coverage spans the interval ?450 km s?1 to +400 km s?1, at a resolution of 1.3 kms?1. The data were corrected for stray radiation at the Institute for Radioastronomy of the University of Bonn, refining the original correction applied to the LDS. The rms brightness-temperature noise of the merged database is 0.07?0.09 K. Residual errors in the profile wings due to defects in the correction for stray radiation are for most of the data below a level of 20?40 mK. It would be necessary to construct a telescope with a main beam efficiency of ?MB >? 99% to achieve the same accuracy. The merged and refined material entering the LAB Survey of Galactic HI is intended to be a general resource useful to a wide range of studies of the physical and structural characteristices of the Galactic interstellar environment. The LAB Survey is the most sensitive Milky Way HI survey to date, with the most extensive coverage both spatially and kinematically.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

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Citations in the corpus

New Physical Insights about Tidal Disruption Events from a Comprehensive Observational Inventory at X-Ray Wavelengths (2016, methodology): “In Figure 9 we have plotted as a function of time, the ratio of the measured NH against the Galactic column density along the line of sight as measured by the Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla et al. 2005).”
THE REPEATING FAST RADIO BURST FRB 121102: MULTI-WAVELENGTH OBSERVATIONS AND ADDITIONAL BURSTS (2016, background): “…FRB 121102, and that the hydrogen column density, NH, is correlated with DM according to the prescription of He et al. (2013), then the NH toward the source would be 1.7+0.7−0.5 × 1022 cm−2 (signifi- cantly higher than the predicted maximum Galactic NH of 4.9 × 1021 cm−2, Kalberla et al. 2005).”
THE GALFA-Hi SURVEY: DATA RELEASE 1 (2011, methodology): “The Galactic All Sky Survey (GASS; McClure-Griffiths et al. 2009), is a half-sky intermediate resolution (15′) survey in the southern hemisphere.”
Probing cosmic isotropy with a new X-ray galaxy cluster sample through the LX–T scaling relation (2020, methodology): “This happens because in the calculation of NHtot, W13 use the NHI from the LAB survey (Kalberla et al. 2005) and not from DL90.”
The Binary Neutron Star Event LIGO/Virgo GW170817 160 Days after Merger: Synchrotron Emission across the Electromagnetic Spectrum (2018, methodology): “We adopt an absorbed power-law spectral model with index Γ and Galactic neutral hydrogen column density NHmw = 0.0784×1022 cm−2 (Kalberla et al. 2005) and use MCMC sampling to constrain the spectral parameters.”
The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. V. Rising X-Ray Emission from an Off-axis Jet (2017, background): “The neutral hydrogen column density in the direction of the transient is = ´ -NH 0.0784 10 cmmw 22 2 (Kalberla et al. 2005).”
Astrophysical Limits on Very Light Axion-like Particles from Chandra Grating Spectroscopy of NGC 1275 (2019, methodology): “An initial fit of the spectra with a power-law continuum modified by Galactic absorption (NH = 1.32 × 1021 cm−2 ; Kalberla et al. 2005) finds 10–15% excesses in three energy bands; below 1.3 keV (MEG only), 2.2 − 2.5 keV (HEG and MEG), and 6 − 7 keV (principally in the HEG).”
TeV BL Lac objects at the dawn of the Fermi era (2009, methodology): “In most cases a single power-law model absorbed with a column density fixed to the Galactic value (taken from Kalberla et al. 2005) provides a good fit to the data.”
Revealing the Properties of Dark Matter in the Merging Cluster MACS J0025.4–1222 (2008, methodology): “The Galactic absorption was fixed at the value of 2.5 × 1020 cm−2 derived from HI surveys (Kalberla et al. 2005).”
The Effelsberg-Bonn H i Survey: Milky Way gas - First data release (2015, methodology): “…merged with the Instituto Argentino de Radioastronomı́a Survey (IAR; Arnal et al. 2000; Bajaja et al. 2005, for δ < −27◦.5) to form the Leiden/Argentine/Bonn Survey (LAB; Bajaja et al. 1985; Kalberla et al. 2005) – the first full-sky Milky Way H i survey that was corrected for stray radiation (SR).”
The Vertical Structure of the Outer Milky Way H I Disk (2006, methodology): “Data Processing We use the 21 cm Leiden/Argentine/Bonn (LAB) data (Kalberla et al. 2005; Hartmann & Burton 1997; Bajaja et al. 2005; Arnal et al. 2000) to conduct a quantitative study of the warp and scalloping.”
FERMI OBSERVATIONS OF CASSIOPEIA AND CEPHEUS: DIFFUSE GAMMA-RAY EMISSION IN THE OUTER GALAXY (2009, methodology): “Column densities N(H I) of atomic hydrogen have been derived using the LAB H I survey by Kalberla et al. (2005).”
A new bound on axion-like particles (2017, neutral): “components account for the Galactic foreground absorption and the intrinsic absorption local to M87, respectively. The Galactic absorption was xed to the measured HI column density of 1:94 1020 cm 2 ([39]). The best-t photon index was 2:30 0:05, the intrinsic absorption was (4 1) 1020 cm 2 and the u”
A HUBBLE DIAGRAM FOR QUASARS (2015, methodology): “…flux at 2 keV was obtained by converting the ROSAT/PSPC count rates in the energy band 0.1–2.4 keV into unabsorbed 0.5–2 keV fluxes using Webpimms assuming a power-law spectrum with no intrinsic absorption and a photon index 2.0G = modified by Galactic absorption (Kalberla et al. 2005).”
BAT AGN Spectroscopic Survey. V. X-Ray Properties of the Swift/BAT 70-month AGN Catalog (2017, methodology): “…all models reported in what follows, we took into account Galactic absorption in the direction of the source, by adding photoelectric absorption (i.e., using the tbabs component in xspec, Wilms et al. 2000), fixed to the value from the HI maps of Kalberla et al. (2005), assuming Solar metallicity.”
STARS, GAS, AND DARK MATTER IN THE SOLAR NEIGHBORHOOD (2015, background): “…add significantly to the 20% error we have already estimated for the CNM. Recently, Fukui et al. (2015) have analyzed the all-sky LAB 21 cm survey (Kalberla et al. 2005) together with the Planck map of the dust emission at 353 GHz (Planck Collaboration 2014) to infer the total amount of HI at b…”
The prompt-afterglow connection in gamma-ray bursts: a comprehensive statistical analysis of Swift X-ray light curves (2012, methodology): “The Galactic contribution was frozen to the value in the direction of the burst as computed by Kalberla et al. (2005).”
ASASSN-14ae: a tidal disruption event at 200 Mpc (2014, methodology): “To convert this to a flux, we assume a power law spectrum with Γ = 2 and Galactic H I column density (Kalberla et al. 2005), yielding an upper limit of ∼ 2.9 × 10−14 erg cm−2 s−1.”
Cosmic-ray propagation with DRAGON2: I. numerical solver and astrophysical ingredients (2016, methodology): “Pohl2008 The reconstructed spatial distribution of neutral gas in the Galaxy is obtained by [81], who have kinematically deconvolved the LAB HI survey by [82] with appropriate modifications reflecting the larger single-cloud linewidth and the galactic warp and flaring in the outer Galaxy8.”