English
Related papers

Related papers: Breaking correlation in the inflow parameters of i…

200 papers

The boundary conditions of the heliosphere are set by the ionization, density and composition of inflowing interstellar matter. Constraining the properties of the Local Interstellar Cloud (LIC) at the heliosphere requires radiative transfer…

Astrophysics · Physics 2009-11-13 Jonathan D. Slavin , Priscilla C. Frisch

We relax the usual assumption of Maxwellian velocity distributions in the interstellar medium (ISM) in the analysis of neutral He particle data from Ulysses and the Interstellar Boundary Explorer (IBEX). For Ulysses, the possibility that a…

Solar and Stellar Astrophysics · Physics 2015-10-28 Brian E. Wood , Hans-Reinhard Mueller

The IBEX-Lo instrument on the Interstellar Boundary Explorer (IBEX) mission observes primary and secondary interstellar helium in its 4 lowest energy steps. Observations of these helium populations have been systematically analyzed and…

Solar and Stellar Astrophysics · Physics 2024-09-19 H. Islam , N. Schwadron , E. Moebius , F. Rahmanifard , J. M. Sokol , A. Galli , D. J. McComas , P. Wurz , S. A. Fuselier , K. Fairchild , D. Heirtzler

The Interstellar Boundary Explorer (IBEX) has now operated in space for 7 years and returned nearly continuous observations that have led to scientific discoveries and reshaped our entire understanding of the outer heliosphere and its…

To determine if the recently launched Imaging X-ray Polarimetry Explorer (IXPE) can follow the polarization variations induced by different particle acceleration mechanisms in blazars jets we simulate observations of a high synchrotron peak…

High Energy Astrophysical Phenomena · Physics 2022-06-29 L. Di Gesu , F. Tavecchio , I. Donnarumma , A. Marscher , M. Pesce-Rollins , M. Landoni

Interstellar neutral gas atoms penetrate the heliopause and reach 1~au, where they are detected by IBEX. The flow of neutral interstellar helium through the perturbed interstellar plasma in the outer heliosheath (OHS) results in creation of…

CONTEXT: In the interpretation of stellar jet observations, the physical parameters are usually determined from emission line ratios, obtained from spectroscopic observations or using the information contained in narrow band images. The…

Astrophysics · Physics 2009-11-13 F. De Colle , C. del Burgo , A. C. Raga

Spatial associations have been found between interstellar neutral hydrogen (HI) emission morphology and small-scale structure observed by the Wilkinson Microwave Anisotropy Probe (WMAP) in an area bounded by l = 60 & 180 deg, b = 30 & 70…

Astrophysics · Physics 2009-11-13 Gerrit L. Verschuur

Radiative transfer equilibrium models of nearby interstellar matter (ISM) yield the boundary conditions of the heliosphere when constrained with observations of ISM inside and outside of the heliosphere. Filtration factors for interstellar…

Astrophysics · Physics 2015-06-24 Priscilla C. Frisch

Context. Interplanetary (IP) shock waves offer an unparalleled opportunity to directly study the elusive mechanisms of particle acceleration that are pervasive in our Universe. Novel spacecraft missions, orbiting poorly-explored regions of…

Space Physics · Physics 2025-08-28 Domenico Trotta , Timothy S. Horbury , Joe Giacalone

The temperature of the low-density intergalactic medium is set by the balance between adiabatic cooling resulting from the expansion of the universe, and photo-heating by the UV-background. A sudden injection of entropy from the…

Astrophysics · Physics 2007-05-23 Tom Theuns , Saleem Zaroubi , Tae-Sun Kim

Neutral hydrogen (HI) is the fundamental component of the interstellar medium. The Galactic Plane Pulsar Snapshot (GPPS) survey is designed for hunting pulsars by using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) from…

Astrophysics of Galaxies · Physics 2022-12-01 Tao Hong , J. L. Han , L. G. Hou , X. Y. Gao , Chen Wang , Tao Wang

Observing objects in transition from pre- to young Planetary Nebula (PN), when the central star radiation starts to excite the envelope, can help us to understand the evolution of the circumstellar ejecta and their shaping mechanism/s. In…

Astrophysics · Physics 2007-09-03 L. Cerrigone , J. L. Hora , G. Umana , C. Trigilio

Context. Three kilometer-sized interstellar objects (ISOs) have been detected transiting the Solar System, and spacecraft have directly measured micrometer-scale interstellar dust (ISD). Yet no intermediate-size interstellar meteoroids have…

Earth and Planetary Astrophysics · Physics 2025-11-20 Eloy Peña-Asensio , Darryl Z. Seligman

Maps of Energetic Neutral Atom (ENA) fluxes obtained from Interstellar Boundary Explorer (IBEX) observations revealed a bright structure extending over the sky, subsequently dubbed the IBEX ribbon. The ribbon had not been expected from the…

Solar and Stellar Astrophysics · Physics 2016-06-03 P. Swaczyna , M. Bzowski , E. R. Christian , H. O. Funsten , D. J. McComas , N. A. Schwadron

Measurements of the velocity of interstellar HeI inside of the heliosphere have been conducted over the past forty years. These historical data suggest that the ecliptic longitude of the direction of the interstellar flow has increased at…

Astrophysics of Galaxies · Physics 2015-06-11 P. C. Frisch

Long-baseline interferometry at optical and near-infrared wavelengths is an emerging technology which is quickly becoming a useful tool to investigate stellar atmospheres and to compare observations with models. Stellar atmosphere models…

Astrophysics · Physics 2007-05-23 Markus Wittkowski

Direct sampling of interstellar neutral (ISN) atoms close to the Sun enables studies of the very local interstellar medium (VLISM) around the heliosphere. The primary population of ISN helium atoms has, until now, been assumed to reflect…

Solar and Stellar Astrophysics · Physics 2021-05-11 P. Swaczyna , F. Rahmanifard , E. J. Zirnstein , D. J. McComas , J. Heerikhuisen

The Interstellar Boundary EXplorer (IBEX) mission has recently studied the flow of interstellar neutral He atoms through the solar system, and discovered the existence of a secondary He flow likely originating in the outer heliosheath. We…

Solar and Stellar Astrophysics · Physics 2017-12-20 Brian E. Wood , Hans-Reinhard Mueller , Manfred Witte

The intensity interferometry is applied as a chronometer of the particle emission of hydrogen isotopes from the intermediate velocity source formed in $^{40}$Ar+$^{197}$Au reactions at 30 MeV/u. The dynamic emission order of $\tau_{\rm…