Results 131 to 140 of about 599,828 (297)

Magnetic Fields in the Irregular Galaxy LMC [PDF]

Symposium - International Astronomical Union, 1993
New radio continuum surveys allowed the determination of the magnetic field in the Large Magellanic Cloud. The magnetic field is filamentary, extending to the south of the 30 Doradus nebula. Some possible explanations for this unusual morphology are discussed.
openaire   +2 more sources

Ionized gas in the nuclei of elliptical, so, spiral, and irregular galaxies [PDF]

Ionized gas in elliptical, SO, spiral, and irregular galaxy ...
Burbidge, E. M., Burbidge, G. R.
core   +1 more source

Reassessing the Relationship Between Meteor Radio Afterglows and Optical Persistent Trains

Journal of Geophysical Research: Space Physics, Volume 130, Issue 9, September 2025.
Abstract Meteor radio afterglows (MRAs) and optical persistent trains (PTs) are two types of long‐lived phenomena which are occasionally observed following the occurrence of a meteor. Both phenomena are thought to be produced by intrinsic emission mechanisms; PTs have been associated with chemiluminescent reactions between meteoric metals and ...
L. E. Cordonnier, K. S. Obenberger, G. B. Taylor, J. M. Holmes, J. Dowell, D. Vida   +5 more
wiley   +1 more source

Strange and Odd Morphology Extragalactic Radio Sources (STROMERSs): A Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) Look at the Strange and Odd Radio Sources

Universe
We report the identification of an extremely rare and peculiar set of irregular radio sources, termed “STROMERSs” (STRange and Odd Morphology Extragalactic Radio Sources).ingThe irregular radio sources with very anomalous morphologies that make them ...
Soumen Kumar Bera, Tapan K. Sasmal, Soumen Mondal, Taotao Fang, Xuelei Chen   +4 more
doaj   +1 more source

Neutron Monitor Based Incoming Flux Correction for Cosmic‐Ray Neutron Sensing of Environmental Water

Water Resources Research, Volume 61, Issue 9, September 2025.
Abstract Monitoring of near‐surface water content with cosmic‐ray neutrons is strongly dependent on heliospheric and geomagnetic conditions. Neutron monitor (NM) stations are commonly used as a reference for the incoming cosmic radiation to correct the hydrological neutron signal.
Lasse Hertle, Steffen Zacharias, Nicholas Larsen, Daniel Rasche, David McJannet, Martin Schrön   +5 more
wiley   +1 more source

Statistics of HI Extents of Irregular Galaxies [PDF]

Symposium - International Astronomical Union, 1996
Using the 3.′2 Arecibo beam, we have mapped the HI envelopes of a sample of 70 irregular galaxies (Sdm, Sm, Im and BCD), including 45 from the Virgo Cluster Catalog, 14 Field galaxies at similar redshifts, and 11 Nearby dwarfs chosen to give a complete sample out to 6 Mpc, within the Arecibo declination range.
openaire   +2 more sources

Ultradeep Imaging of Nearby Dwarf Irregular Galaxies: Young Objects in the Far Outer Disk

The Astronomical Journal
Ultradeep UBVI imaging of 10 nearby (≤7.8 Mpc) noninteracting dwarf irregular galaxies are used to examine their far outer stellar disks. The annulus between 26 mag arcsec ^−2 and 29 mag arcsec ^−2 in the V band is what we define as the far outer disk ...
Deidre A. Hunter, Hong-Xin Zhang, Bruce G. Elmegreen, Ella R. Castelloe, Hannah Michaye Ledford, Ishara Nisley, Ryuga Hatano   +6 more
doaj   +1 more source

Polycyclic aromatic hydrocarbons in the dwarf galaxy IC 10

, 2011
Infrared observations from the Spitzer Space Telescope archive are used to study the dust component of the interstellar medium in the IC~10 irregular galaxy. Dust distribution in the galaxy is compared to the distributions of H$\alpha$ and [SII] emission,
A. Bullejos, A. D. Bolatto, A. G. G. M. Tielens, A. Gil de Paz, A. Leroy, A. R. Lopez-Sanchez, B. T. Draine, B. T. Draine, D. H. Hunter, D. Hunter, D. S. Wiebe, E. M. Wilcots, F. Galliano, H. Yang, I. D. Karachentsev, J. C. Thurow, J. D. T. Smith, K. M. Sandstrom, K. T. Chyzy, L. Magrini, M. G. Richer, M. Rosado, N. A. Tikhonov, O. V. Egorov, O. V. Egorov, P. A. Crowther, P. Hodge, P. Massey, P. Massey, P. Massey, P. Royer, T. A. Lozinskaya, T. A. Lozinskaya, T. A. Lozinskaya, T.A. Lozinskaya, V. P. Arkhipova, W.D. Vacca   +36 more
core   +1 more source

A γ-Ray-emitting Collisional Ring Galaxy System in Our Galactic Neighborhood

The Astrophysical Journal Letters
The astrophysical γ -ray photons carry the signatures of the violent phenomena happening on various astronomical scales in our Universe. This includes supernova remnants, pulsars, and pulsar wind nebulae in the Galactic environment and extragalactic ...
Vaidehi S. Paliya, D. J. Saikia
doaj   +1 more source

FIGGS Faint Irregular Galaxies GMRT Survey [PDF]

, 2008
The Faint Irregular Galaxies GMRT Survey (FIGGS) is a large program aimed at providing a comprehensive and statistically robust characterisation of the neutral ISM properties of faint (M_B > -14.5), nearby, gas rich, dwarf irregular galaxies using the Giant Metrewave Radio Telescope (GMRT). Here we briefly describe the survey and discuss some of the
Jayaram N. Chengalur, Margarita Sharina, Igor D. Karachentsev, Ayesha Begum, S. S. Kaisin   +4 more
openaire   +4 more sources