The Origin of the Local Bubble

  title={The Origin of the Local Bubble},
  author={Jes'us Ma'iz-Apell'aniz},
  journal={The Astrophysical Journal Letters},
  pages={L83 - L86}
The Sun is located in a low-density region of the interstellar medium partially filled with hot gas that is the likely result of several nearby supernova explosions within the last 10 Myr. Here we use astrometric data to show that part of the Scorpius-Centaurus OB association was located closer to the present position of the Sun 5-7 Myr ago than today. Evolutionary synthesis models indicate that the association must have experienced ~20 supernova explosions in the last 10-12 Myr, a prediction… 
Star formation near the Sun is driven by expansion of the Local Bubble
Three-dimensional analysis of the solar neighbourhood shows that nearly all star-forming regions near the Sun lie on the surface of the Local Bubble, which was inflated by supernovae about 14 million years ago, providing robust observational support for the theory of supernova-driven star formation.
Origin of the Local Bubble
AbstractWe present a new unbiased search for OB associations in the Solar neighbourhood which have hosted the progenitor stars of the core collapse supernovae responsible for the Local Bubble in the
Long term variability of heliopause due to changing conditions in local interstellar medium
Recent studies have shown that local environment of the Sun is a complex one with the presence of several supernova shock bubbles and interstellar clouds in the local interstellar medium (LISM). Even
The Local Bubble and Interstellar Material Near the Sun
Abstract The properties of interstellar matter at the Sun are regulated by our location with respect to a void in the local matter distribution, known as the Local Bubble. The Local Bubble (LB) is
The trouble with the Local Bubble
The model of a Local Hot Bubble has been widely accepted as providing a framework that can explain the ubiquitous presence of the soft X-ray background diffuse emission. We summarize the current
Young Stars Near the Sun
▪ Abstract Until the late 1990s the rich Hyades and the sparse UMa clusters were the only coeval, comoving concentrations of stars known within 60 pc of Earth. Both are hundreds of millions of years
Modeling the magnetized Local Bubble from dust data
The Sun is embedded in the so-called Local Bubble (LB) – a cavity of hot plasma created by supernova explosions and surrounded by a shell of cold, dusty gas. Knowing the local distortion of the
Pressure and Ionization Balances in the Circum-Heliospheric Interstellar Medium and the Local Bubble
A disconcerting mismatch of thermal pressures for two media in contact with each other, (1) the warm, Circum-Heliospheric Interstellar Medium (CHISM) and (2) the very hot material within a much
The search for the origin of the Local Bubble redivivus
ABSTRACT We present anew unbiasedsearchand analysisofall B starsin the solarneighbourhood(within a volume of 400 pc diameter) using the Arivel data base to track down theremains of the OB
Astrophysics in 2002
This has been the Year of the Baryon. Some low temperature ones were seen at high redshift, some high temperature ones were seen at low redshift, and some cooling ones were (probably) reheated.


Multiple Supernova Remnant Models of the Local Bubble and the Soft X-Ray Background
This paper examines the possibility that a series of two or three supernovae in the diffuse interstellar medium might be capable of generating a long-lived hot diffuse bubble with characteristics
The local bubble, local fluff, and heliosphere
The properties of the Local Bubble, Local Fluff complex of nearby interstellar clouds, and the heliosphere are mutually constrained by data and theory. Observations and models of the diffuse
The nearby interstellar medium
The high dispersion spectrometer on board the International Ultraviolet Explorer (IUE) satellite was used to observe interstellar absorption lines in Rasalhague (α Oph). This star is located 18 pc
The local density of matter mapped by hipparcos
We determine the velocity distribution and space density of a volume-complete sample of A and F stars, using parallaxes and proper motions from the Hipparcos satellite. We use these data to solve for
A theory of the interstellar medium - Three components regulated by supernova explosions in an inhomogeneous substrate
Supernova explosions in a cloudy interstellar medium produce a three-component medium in which a large fraction of the volume is filled with hot, tenuous gas. In the disk of the galaxy the evolution
The Local Distribution of NA i Interstellar Gas
We present high-resolution absorption measurements (lambda/Delta lambda approximately 75,000) of the interstellar Na I D lines at 5890 A toward 80 southern hemisphere early-type stars located in the
On the origin of the o and b-type stars with high velocities II runaway stars and pulsars ejected from the nearby young stellar groups
We use milli-arcsecond accuracy astrometry (proper motions and parallaxes) from Hipparcos and from radio observations to retrace the orbits of 56 runaway stars and nine compact objects with distances
Hot gas in the interstellar medium: A reanalysis of O VI absorption data
The Copernicus O(+5) column densities toward 72 stars provide a rare and valuable tracer of 10(exp 5.5) K gas in the interstellar medium. The original analysis of the data by Jenkins provided
The local bubble
A summary of the lively discussions in working group 2 (WG2) on the origin and evolution of the LB is given below. The debate focussed mainly on the problem of how to pin down the physical properties
Progress on Establishing the Spatial Distribution of Material Responsible for the 1/4 keV Soft X-Ray Diffuse Background Local and Halo Components
In this paper we present a new look at the distribution of emission responsible for the soft X-ray diffuse background (SXRB) using ROSAT all-sky survey data. This is prompted by the demonstration of