Výsledky vyhledávání - "P. M. W. Kalberla"

Local H I filaments driven by a small-scale dynamo

Autor: P. M. W. Kalberla, J. Kerp, Urmas Haud

Publikováno v: Astronomy & Astrophysics. 654:A91

Context. H I filaments are closely related to dusty magnetized structures that are observable in the far infrared (FIR). Recently it was proposed that the coherence of oriented H I structures in velocity traces the line of sight magnetic field tangli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88129692a8b319ab20ef043349ee41df
https://doi.org/10.1051/0004-6361/202140274

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Radial Velocities in the Outermost Disk toward the Anticenter

Autor: C. Allende Prieto, Martin Lopez-Corredoira, P. M. W. Kalberla, F. Sylos Labini

Publikováno v: The Astronomical journal (N.Y.N.Y.) 157 (2019). doi:10.3847/1538-3881/aaf3b3
info:cnr-pdr/source/autori:Lopez-Corredoira M.; Sylos Labini F.; Kalberla P.M.W.; Allende Prieto C./titolo:Radial Velocities in the Outermost Disk toward the Anticenter/doi:10.3847%2F1538-3881%2Faaf3b3/rivista:The Astronomical journal (N.Y.N.Y.)/anno:2019/pagina_da:/pagina_a:/intervallo_pagine:/volume:157

We measure the mean Galactocentric radial component of the velocity of stars ($v_R$) in the disk at 8 kpc$17$ kpc. Negative velocities are also observed in 21 cm HI maps, possibly dominated by local gas emission. Among the possible dynamical causes f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54b2404a2378f377458eab163fca6e77
http://www.cnr.it/prodotto/i/399044

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Anisotropies in the HI gas distribution toward 3C196

Autor: P. M. W. Kalberla, J. Kerp

The local Galactic HI gas was found to contain cold neutral medium (CNM) filaments that are aligned with polarized dust emission. These filaments appear to be dominated by the magnetic field and in this case turbulence is expected to show distinct an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50f8410f9033f9c467244dca73e9fb69
http://arxiv.org/abs/1608.05369

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A survey of HI gas toward the Andromeda Galaxy

Autor: Benjamin Winkel, J. Kerp, L. Flöer, D. Lenz, P. M. W. Kalberla, N. Ben Bekhti

The subsequent coalescence of low--mass halos over cosmic time is thought to be the major formation channel of massive spiral galaxies like the Milky Way and the Andromeda Galaxy (M31). The gaseous halo of a massive galaxy is considered to be the res

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f0427fd728948bf14228db5e539b01f

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Properties of cold and warm H I gas phases derived from a Gaussian decomposition of HI4PI data

Autor: Urmas Haud, P. M. W. Kalberla

Publikováno v: Astronomy & Astrophysics. 619:A58

Context. A large fraction of the interstellar medium can be characterized as a multiphase medium. The neutral hydrogen gas is bistable with a cold and warm neutral medium (CNM and WNM respectively) but there is evidence for an additional phase at int

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8bc7a0f83f75b458d7dcb02ac235931
https://doi.org/10.1051/0004-6361/201833146

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THE EFFELSBERG–BONN H I SURVEY: DATA REDUCTION

Autor: J. Kerp, P. M. W. Kalberla, L. Floeer, Benjamin Winkel

Publikováno v: The Astrophysical Journal Supplement Series. 188:488-499

Starting in winter 2008/2009 an L-band 7-Feed-Array receiver is used for a 21-cm line survey performed with the 100-m telescope, the Effelsberg-Bonn HI survey (EBHIS). The EBHIS will cover the whole northern hemisphere for decl.>-5 deg comprising bot

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d0655e9421c2bdbec4f7e751bd30080
https://doi.org/10.1088/0067-0049/188/2/488

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GASS: THE PARKES GALACTIC ALL-SKY SURVEY. I. SURVEY DESCRIPTION, GOALS, AND INITIAL DATA RELEASE

Autor: H. A. Ford, M. R. Calabretta, Brad K. Gibson, P. M. W. Kalberla, L. Dedes, Lister Staveley-Smith, Naomi McClure-Griffiths, Daniel J. Pisano, Jeremy Bailin, F. J. Lockman, Steven Janowiecki, K. Newton-McGee, Hiroyuki Nakanishi, Tara Murphy

Publikováno v: The Astrophysical Journal Supplement Series. 181:398-412

The Parkes Galactic All-Sky Survey (GASS) is a survey of Galactic atomic hydrogen (HI) emission in the Southern sky covering declinations $\delta \leq 1^{\circ}$ using the Parkes Radio Telescope. The survey covers $2\pi$ steradians with an effective

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a23a0c9278362b6f62199512066c2dc
https://doi.org/10.1088/0067-0049/181/2/398

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Global properties of the H Idistribution in the outer Milky Way

Autor: P. M. W. Kalberla, L. Dedes

Publikováno v: Astronomy & Astrophysics. 487:951-963

Aims: We derive the 3-D HI volume density distribution for the Galactic disk out to R = 60 kpc. Methods: Our analysis is based on parameters for the warp and rotation curve derived previously. The data are taken from the Leiden/Argentine/Bonn all sky

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d7481042b5efaf4f48a4e1e2ed4ca8fa
https://doi.org/10.1051/0004-6361:20079240

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Gaussian decomposition of $\ion{H}{i}$ surveys

Autor: P. M. W. Kalberla, Urmas Haud

Publikováno v: Astronomy & Astrophysics. 466:555-564

Aims. We investigate the properties of the 21-cm radio-lines of galactic neutral hydrogen by decomposing, the profiles of "The Leiden/Argentine/Bonn (LAB) Survey of Galactic H I" into Gaussian components. The width distribution of the obtained compon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a87d49aa7b4b3c2503d48f7d46d29d88
https://doi.org/10.1051/0004-6361:20065796

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