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Interstellar dust and gas that enter the heliosphere provide us with important clues about both the heliosphere and the local interstellar medium (LISM). The picture we have of the Local Interstellar Cloud (LIC) from both \emph{in situ}…

Astrophysics of Galaxies · Physics 2020-12-09 Jonathan D. Slavin

A range of astronomical data indicates that ancient supernovae created the galactic environment of the Sun and sculpted the physical properties of the interstellar medium near the heliosphere. In this paper we review the characteristics of…

Solar and Stellar Astrophysics · Physics 2022-08-03 Priscilla Frisch , Vikram V. Dwarkadas

This paper reviews the theoretical approaches and existing models of the solar wind interaction with the Local Interstellar Cloud (LIC). Models discussed take into account the multi-component nature of the solar wind and local interstellar…

Astrophysics · Physics 2007-05-23 Vladislav V. Izmodenov

The Local Interstellar Medium (LISM) is a unique environment that presents an opportunity to study general interstellar phenomena in great detail and in three dimensions. In particular, high resolution optical and ultraviolet spectroscopy…

Astrophysics · Physics 2007-05-23 Seth Redfield

Interstellar dust has been detected in situ flowing through the heliosphere. However, our ability to derive the density and size distribution of the interstellar dust in the local interstellar medium from this directly detected dust…

Astrophysics of Galaxies · Physics 2026-05-04 Jonathan D. Slavin , Marc Kornbleuth , Merav Opher , Gabor Toth

Molecular hydrogen (H2) is the primary component of the reservoirs of cold, dense gas that fuel star formation in our galaxy. While the H2 abundance is ultimately regulated by physical processes operating on small scales in the interstellar…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Robert Feldmann , Jose Hernandez , Nickolay Y. Gnedin

Aims. Based on measurements by the Ulysses spacecraft and high-resolution modelling of the motion of interstellar dust (ISD) through the heliosphere we predict the ISD flow in the inner planetary system and on to the Earth. This is the…

Earth and Planetary Astrophysics · Physics 2019-01-09 Peter Strub , Veerle J. Sterken , Rachel Soja , Harald Krüger , Eberhard Grün , Ralf Srama

The bulk flow velocity for the cluster of interstellar cloudlets within about 30 pc of the Sun is determined from optical and ultraviolet absorption line data, after omitting from the sample stars with circumstellar disks or variable…

Astrophysics · Physics 2009-11-07 P. C. Frisch , L. Grodnicki , D. E. Welty

Starlight that becomes linearly polarized by magnetically aligned dust grains provides a viable diagnostic of the interstellar magnetic field (ISMF). A survey is underway to map the local ISMF using data collected at eight observatories in…

The influence of solar variability on climate is currently uncertain. Recent observations have indicated a possible mechanism via the influence of solar modulated cosmic rays on global cloud cover. Surprisingly the influence of solar…

Atmospheric and Oceanic Physics · Physics 2011-09-06 Nigel D Marsh , Henrik Svensmark

The interstellar medium (ISM) is a turbulent, highly structured multi-phase medium. State-of-the-art cosmological simulations of the formation of galactic discs usually lack the resolution to accurately resolve those multi-phase structures.…

Astrophysics of Galaxies · Physics 2022-04-13 Tobias Buck , Christoph Pfrommer , Philipp Girichidis , Bogdan Corobean

Recent observations in the 21cm line with the Green Bank Telescope have changed our view of the neutral interstellar medium (ISM) in several ways. The new data show that in the inner parts of the Milky Way the disk-halo interface is…

Astrophysics · Physics 2015-06-24 Felix J. Lockman

We present a model of the interaction of interstellar dust grains with a stellar environment, that predicts the distribution of interstellar dust grains in the size range between $0.1 {\rm \mu m}$ and $1 {\rm \mu m}$ around a star for the…

Astrophysics · Physics 2007-05-23 M. Landgraf , P. C. Frisch

The dynamical evolution of HII regions with and without stellar motion in dense, structured molecular clouds is studied. Clouds are modeled in hydrostatic equilibrium, with gaussian central cores and external halos that obey r**-2 and r**-3…

Astrophysics · Physics 2011-02-11 Jose Franco , Guillermo Garcia-Segura , Stan Kurtz

A heliospheric termination shock (HTS) surrounds our solar system at approximately 100 astronomical units from the Sun, where the expanding solar wind (SW) is compressed and heated before encountering the interstellar medium.…

Solar and Stellar Astrophysics · Physics 2025-01-28 E. J. Zirnstein , R. Kumar , B. L. Shrestha , P. Swaczyna , M. A. Dayeh , J. Heerikhuisen , J. R. Szalay

Wave-particle instabilities driven by departures from local thermodynamic equilibrium have been conjectured to play a role in governing solar wind dynamics. We calculate the statistical variation of linear stability over a large subset of…

Solar and Stellar Astrophysics · Physics 2020-01-08 Kristopher G. Klein , Mihailo Martinovic , David Stansby , Timothy S. Horbury

The interstellar medium (ISM) can be thought of as the galactic atmosphere which fills the space between stars. When clouds within the ISM collapse, stars are born. When the stars die, they return their matter to the surrounding gas.…

Astrophysics · Physics 2009-10-31 J. Bland-Hawthorn , R. J. Reynolds

We report a new diagnostic between two different states of the local interstellar medium (LISM) near our solar system using a sensitivity study constrained by several distinct and complementary observations of the LISM, solar wind, and…

Solar and Stellar Astrophysics · Physics 2015-06-17 L. Ben-Jaffel , M. Strumik , R. Ratkiewicz , J. Grygorczuk

Photoionizing radiation and stellar winds from massive stars deposit energy and momentum into the interstellar medium (ISM). They might disperse the local ISM, change its turbulent multi-phase structure, and even regulate star formation.…

Astrophysics of Galaxies · Physics 2018-06-06 Sebastian Haid , Stefanie Walch , Daniel Seifried , Richard Wünsch , František Dinnbier , Thorsten Naab

We present a multi-wavelength study of the local Leo cold cloud (LLCC), a very nearby, very cold cloud in the interstellar medium. Through stellar absorption studies we find that the LLCC is between 11.3 pc and 24.3 pc away, making it the…

Astrophysics of Galaxies · Physics 2015-05-28 J. E. G. Peek , Carl Heiles , Kathryn M. G. Peek , David M. Meyer , J. T. Lauroesch
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