Results 111 to 120 of about 63,480 (217)
Small scale H I structure and the soft X-ray background [PDF]
The observed anticorrelation between diffuse soft X-ray flux and H I column density has been explained as absorption of soft X-rays produced in a hot galactic halo, assuming that the neutral interstellar material is sufficiently clumped to reduce the ...
Jahoda, K., Lockman, F. J., Mccammon, D.
core +1 more source
Analysis of the 3.2–3.3 μm Interstellar Absorption Feature on Three Milky Way Sightlines
The Astrophysical JournalWe report new analyses of spectra of the 3.2–3.3 μ m absorption feature observed in the diffuse interstellar medium toward three Milky Way sources: 2MASS J 17470898 − 2829561 (2M1747) and the Quintuplet Cluster, both located in the Galactic center, and ...
L. S. Bernstein, T. R. Geballe
doaj +1 more source
The organic component of interstellar grains [PDF]
The 3.4 micron absorption feature observed in the spectrum of a number of Galactic Center (GC) sources indicates the presence of organic molecules in the interstellar medium.
Greenberg, J. M., Schutte, W. A.
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Optical Interstellar Absorption Features [PDF]
Monthly Notices of the Royal Astronomical Society, 1968 W. Buscombe, P. M. Kennedy
openaire +1 more source
The Astrophysical JournalNewly computed collisional rate coefficients for the excitation of C _2 in collisions with H _2 , presented recently by Najar & Kalugina, are significantly larger than the values adopted previously in models for the excitation of the C _2 molecule, a ...
David A. Neufeld +9 more
doaj +1 more source
GalaxiesThis work is dedicated to the study of interstellar medium (ISM) along the line of sight (LOS) of the transient low-mass X-ray binary, MXB 1659-298, capitalizing the high resolving power of XMM-Newton in the soft energy range.
Rabindra Mahato +2 more
doaj +1 more source
Loop I/NPS Morphology Predictions in the Ultralong-wavelength Band
The Astrophysical JournalLoop I/North Polar Spur (NPS) is the giant arc structure above the Galactic plane observed at radio wavelengths (≲10 GHz). There has been long-standing debate about its origin. While many people believe that it consists of nearby supernova remnants (SNRs)
Yanping Cong +5 more
doaj +1 more source
Cyclic C4+ as the Carrier of the Diffuse Interstellar Band at 503.9 nm?
The Astrophysical JournalThe diffuse interstellar bands (DIBs) have remained a mystery in astronomy since their discovery over a century ago. The only currently known carrier is ${{\rm{C}}}_{60}^{+}$ , responsible for five DIBs, while more than 550 are yet to be interpreted. The
Serge. A. Krasnokutski +7 more
doaj +1 more source
The Astrophysical JournalWe present some of the first infrared spectral maps acquired by SPHEREx. These maps, which to our knowledge are the largest of their type ever compiled in the near-infrared, reveal multiple strong lines due to interstellar ices and polycyclic aromatic ...
Joseph L. Hora +34 more
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Kinematics of Diffuse Interstellar Clouds :Recent GMRT Results
, 2004 A high latitude HI 21 cm-line absorption survey toward extragalactic sources was recently completed using the Giant Meterwave Radio Telescope (GMRT). A total of 104 sources with mod(b) > 15 deg.
Dwarakanath, K. S.
core +1 more source