Results 61 to 70 of about 51,739 (211)

Mapping Our Path through the Local Interstellar Medium: High-resolution Ultraviolet Absorption Spectroscopy of Sight Lines along the Sun’s Historical Trajectory

The Astrophysical Journal
Using high-resolution UV data obtained from the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope, we focus on eight sight lines along the Sun’s historical trajectory to reconstruct the morphology of our most recent interstellar ...
Hunter Vannier, Seth Redfield, Brian E. Wood, Hans-Reinhard Müller, Jeffrey L. Linsky, Priscilla C. Frisch   +5 more
doaj   +1 more source

The Fractal Dimension of Projected Clouds

, 2005
The interstellar medium seems to have an underlying fractal structure which can be characterized through its fractal dimension. However, interstellar clouds are observed as projected two-dimensional images, and the projection of a tri-dimensional fractal
Beech M., Beech M., Emilio J. Alfaro, Enrique Perez, Falgarone E., Hetem A., Larson R. B., Nestor Sanchez, Stutzki J., Vogelaar M. G. R.   +9 more
core   +1 more source

XMM-Newton observations of the supernova remnant IC443: I. soft X-ray emission from shocked interstellar medium [PDF]

, 2006
The shocked interstellar medium around IC443 produces strong X-ray emission in the soft energy band ...
Asaoka I., Bocchino F., Bocchino F., Braun R., Burton M. G., Cornett R. H., Denoyer L. K., E. Troja, Esposito J. A., F. Bocchino, F. Reale, van Dishoeck E. F., Wang Z. R.   +12 more
core   +2 more sources

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Earth's Mesosphere During Possible Encounters With Massive Interstellar Clouds 2 and 7 Million Years Ago

Geophysical Research Letters
Our solar system's path has recently been shown to potentially intersect dense interstellar clouds 2 and 7 million years ago: the Local Lynx of Cold Cloud and the edge of the Local Bubble.
Jesse A. Miller, Merav Opher, Maria Hatzaki, Kyriakoula Papachristopoulou, Brian C. Thomas   +4 more
doaj   +1 more source

A modified theoretical Σ − D relation for supernova remnants: I. The case of constant temperature within the supernova remnant [PDF]

Serbian Astronomical Journal, 2003
We present a modification of the theoretical Σ − D relation for supernova remnants (SNRs) in the adiabatic expansion phase. This modification is based on the convolution of the relation first derived by Shklovsky with the Σ − D relation derived in this ...
Urošević Dejan V., Đurić N., Panuti T.   +2 more
doaj   +1 more source

Herschel observations of interstellar chloronium [PDF]

, 2012
Using the Herschel Space Observatory's Heterodyne Instrument for the Far-Infrared (HIFI), we have observed para-chloronium (H2Cl+) toward six sources in the Galaxy.
Aage Sandqvist, Arnold O. Benz, Batrla, Bengt Larsson, Dariusz Lis, David A. Neufeld, De Luca, Evelyne Roueff, Fish, Fitzpatrick, Fitzpatrick, Floris van der Tak, Franck Le Petit, Gary J. Melnick, Harshal Gupta, Herrmann, Indriolo, Jacques Le Bourlot, Jansen, John H. Black, Karl M. Menten, Lang, Le Petit, Lis, Lodders, Mark G. Wolfire, Maryvonne Gerin, Massimo De Luca, Mauersberger, Mezger, Moomey, Müller, Neufeld, Nick Indriolo, Paul F. Goldsmith, Paule Sonnentrucker, Raquel Monje, Rodríguez-Franco, Ronald L. Snell, Simon Bruderer, Sofia, Thomas G. Phillips, Zsófia Nagy   +42 more
core   +5 more sources

Confined Chemistry in Space: Zeolite‐Supported Fe13 Nanoclusters Modulate CS Reactivity

Small Structures, Volume 7, Issue 3, March 2026.
The study explores how an Fe13 cluster confined in chabazite reshapes the reaction of CS and H2 under astrochemical conditions. Confinement promotes C–S bond cleavage over hydrogenation, directing chemistry toward CH4 and H2S formation. Additional CS enables CS2 and C2 species. Microkinetic analysis identifies protoplanetary environments where zeolites
Gerard Pareras, Albert Rimola
wiley   +1 more source

Aditional Ultra-High-Resolution Observations of Ca+ Ions in the Local Insterstellar Medium [PDF]

, 1998
We present ultra-high-resolution (0.35 km s−1 FWHM) observations of the interstellar Ca K line towards seven nearby stars. The spectral resolution was sufficient to resolve the line profiles fully, thereby enabling us to detect hitherto unresolved ...
Crawford, IA, Lallement, R, Welsh, BY
core  

Atmospheric and Deposition Responses of 10Be to Volcanic Eruptions Inferred From the Aerosol‐Climate Model ECHAM6.3‐HAM2.3‐SALSA2.0: 10Be

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract 10Be deposition in ice cores is widely used for solar reconstructions, but its interpretation is complicated by volcanic influences. Using the state‐of‐the‐art aerosol‐climate model ECHAM6.3‐HAM2.3‐SALSA2.0: 10Be, we assess the impacts of three major volcanic eruptions: Agung (1963), El Chichón (1982) and Pinatubo (1991). All eruptions enhance
Minjie Zheng, Raimund Muscheler, Anton Laakso, Florian Adolphi, Zhengyao Lu, Mousong Wu, Peng Chen, Qin Tao, Ulrike Lohmann   +8 more
wiley   +1 more source