Article
Astronomy & Astrophysics
Wenbo Zuo, Aigen Li, Gang Zhao
Summary: This study investigates the interstellar dust composition, size, and quantity by examining the extinction and abundances of 10 interstellar sight lines. The findings suggest that solar and protosolar abundances may not be appropriate representations of the interstellar abundances, while the GCE-augmented protosolar abundances are supported as a viable representation.
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
(2021)
Article
Engineering, Aerospace
E. A. Godenko, V. V. Izmodenov
Summary: This study presents modeling results of charging processes for interstellar dust particles passing through the heliospheric interface. The research shows that the steady-state assumption is valid for modeling trajectories and number density distributions of relatively large dust grains, while the dynamical computation of charge significantly influences the trajectories and modifies the number density for small particles.
ADVANCES IN SPACE RESEARCH
(2023)
Article
Astronomy & Astrophysics
Christophe Morisset, Romano L. M. Corradi, Jorge Garcia-Rojas, Antonio Mampaso, David Jones, Karen B. B. Kwitter, Laura Magrini, Eva Villaver
Summary: This study investigates the discrepancies between the proper plasma analysis method (PPAP) and the use of standard values to calculate physical conditions. The results show that while the PPAP method accurately measures plasma properties, there is some error in measuring interstellar extinction. Therefore, the authors emphasize the need to critically assess the choice of reference lines when using the PPAP method and ensure that results are obtained for non-de-reddened line ratios.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Zainab Awad, Serena Viti
Summary: Observations of diffuse clouds have found high abundances of simple hydrocarbons, challenging conventional gas-phase chemical models. Recent experimental results suggest that photodecomposition of hydrogenated amorphous carbon (HAC) and solid hexane can release a range of hydrocarbons into the gas phase. This study explores the feasibility of a 'top-down' or degradation mechanism for the formation of simple hydrocarbons in diffuse clouds.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Julia Roman-Duval, Edward B. Jenkins, Kirill Tchernyshyov, Benjamin Williams, Christopher J. R. Clark, Karl D. Gordon, Margaret Meixner, Lea Hagen, Joshua Peek, Karin Sandstrom, Jessica Werk, Petia Yanchulova Merica-Jones
Summary: The METAL program on the Hubble Space Telescope studied the depletion of metals in the Large Magellanic Cloud and found that different elements show tight correlations in their depletions, mainly driven by hydrogen column density. The study revealed an east-west variation in gas-phase metallicity in the LMC, with enriched gas in the east and metal-deficient gas in the west.
ASTROPHYSICAL JOURNAL
(2021)
Review
Astronomy & Astrophysics
P. C. Brandt, E. Provornikova, S. D. Bale, A. Cocoros, R. DeMajistre, K. Dialynas, H. A. Elliott, S. Eriksson, B. Fields, A. Galli, M. E. Hill, M. Horanyi, T. Horbury, S. Hunziker, P. Kollmann, J. Kinnison, G. Fountain, S. M. Krimigis, W. S. Kurth, J. Linsky, C. M. Lisse, K. E. Mandt, W. Magnes, R. L. McNutt, J. Miller, E. Moebius, P. Mostafavi, M. Opher, L. Paxton, F. Plaschke, A. R. Poppe, E. C. Roelof, K. Runyon, S. Redfield, N. Schwadron, V. Sterken, P. Swaczyna, J. Szalay, D. Turner, H. Vannier, R. Wimmer-Schweingruber, P. Wurz, E. J. Zirnstein
Summary: This article provides a detailed overview of the knowledge gaps in our understanding of the interaction between the heliosphere and the largely unexplored Very Local Interstellar Medium (VLISM), as well as predictions of potential scientific discoveries in this field. The article discusses the new measurements needed to make progress in space physics, including in-situ plasma and pick-up ion measurements, direct sampling of VLISM properties, and remote imaging to discern the heliospheric shape and interaction with interstellar hydrogen. A 4-year NASA funded mission study reports the implementation of a pragmatic Interstellar Probe mission with a nominal design life of reaching 375 Astronomical Units (au), with likely operation out to 550 au.
SPACE SCIENCE REVIEWS
(2023)
Article
Astronomy & Astrophysics
B. Gunay, M. G. Burton, M. Afsar, T. W. Schmidt
Summary: This study introduces a new observational method for mapping the distribution of aliphatic hydrocarbon content in the solid phase in our Galaxy. The results show a weak trend of increasing optical depth towards the Galactic Centre at b = 0 degrees and suggest that at least 10-20% of carbon in the Galactic plane exists in aliphatic form.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Engineering, Aerospace
Pontus C. Brandt, E. A. Provornikova, A. Cocoros, D. Turner, R. DeMajistre, K. Runyon, C. M. Lisse, S. Bale, W. S. Kurth, A. Galli, P. Wurz, Ralph L. McNutt, R. Wimmer-Schweingruber, J. Linsky, S. Redfield, P. Kollmann, K. E. Mandt, A. M. Rymer, E. C. Roelof, J. Kinnison, M. Opher, M. E. Hill, M. Paul
Summary: This article introduces a mission concept called Interstellar Probe, which aims to explore the mechanisms shaping our sun's protective bubble and understand the evolutionary journey of our sun, heliosphere, and solar system. The article also discusses the scientific rationale, feasibility studies, and implementation details of Interstellar Probe.
Article
Astronomy & Astrophysics
Leire Beitia-Antero, Ana I. Gomez de Castro
Summary: The study presents a dust collision model implemented in an MHD code to investigate variations in grain size distribution. The results suggest that the methodology of using charged particle motion equations in MHD evolution is optimal for studying the coagulation of dust grains in a diffuse regime like a molecular cloud envelope.
ASTROPHYSICAL JOURNAL
(2021)
Article
Mechanics
E. A. Godenko, V. V. Izmodenov
Summary: The aim of this study is to model the distribution of interstellar dust in the heliosphere and investigate the peculiarities of the number density distribution. It is found that dust accumulation regions are located near the heliospheric current sheet and in the tail of the heliosphere.
Article
Astronomy & Astrophysics
O. A. Katushkina, I. I. Baliukin, V. V. Izmodenov, D. B. Alexashov
Summary: This paper explores the possible imprints of secondary interstellar hydrogen atoms created at the heliospheric boundary in full-sky maps of hydrogen fluxes at the Earth's orbit. Using a three-dimensional kinetic model, hydrogen flux maps are calculated for different phases of the solar cycle and energy ranges, revealing specific features during solar minimum conditions. The study shows that the geometry and shape of tails in these flux maps depend on the averaged velocity and kinetic temperatures of the secondary population far from the Sun. These results provide insight into detecting the secondary component of interstellar hydrogen separately from the primary component at 1 AU, which could be important for future space missions exploring the heliospheric boundary.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Thiem Hoang
Summary: The properties of dust evolve with redshift and local gas density, affecting extinction curves and the total-to-selective extinction ratio R-V. The effects of radiative torque disruption cause changes in dust properties, leading to steeper extinction curves and lower R-V values as redshift increases.
ASTROPHYSICAL JOURNAL
(2021)
Review
Astronomy & Astrophysics
P. Mostafavi, L. F. Burlaga, I. H. Cairns, S. A. Fuselier, F. Fraternale, D. A. Gurnett, T. K. Kim, W. S. Kurth, N. Pogorelov, E. Provornikova, J. D. Richardson, D. L. Turner, G. P. Zank
Summary: Large-scale disturbances generated by the Sun's dynamics influence the outer boundaries of the heliosphere and modify the local interstellar medium. Recent observations by the Voyager spacecraft have provided new insights into shock waves in the VLISM, showing significant differences from heliospheric shocks. The question of the existence of a bow shock or wave in front of our heliosphere remains unanswered.
SPACE SCIENCE REVIEWS
(2022)
Review
Astronomy & Astrophysics
Andre Galli, Igor I. Baliukin, Maciej Bzowski, Vladislav V. Izmodenov, Marc Kornbleuth, Harald Kucharek, Eberhard Mobius, Merav Opher, Dan Reisenfeld, Nathan A. Schwadron, Pawel Swaczyna
Summary: This review summarizes the observations of heliospheric energetic neutral atoms and interstellar neutrals, which have revolutionized our understanding of the heliosphere shaped by the combined forces of the local interstellar flow, the local interstellar magnetic field, and the solar wind.
SPACE SCIENCE REVIEWS
(2022)
Article
Astronomy & Astrophysics
Adam M. Ritchey, J. M. Brown, S. R. Federman, Paule Sonnentrucker
Summary: We examine the abundances of interstellar P and Cl based on archival spectra from the Hubble Space Telescope and the Far Ultraviolet Spectroscopic Explorer. By analyzing a sample of 107 sight lines in the Galactic interstellar medium, we determine the column densities of P II, Cl I, and Cl II. We find that P and Cl are undepleted along sight lines with low depletions and show increasing depletions along molecule-rich sight lines. Gas-phase Cl abundances do not vary systematically with molecular hydrogen fraction, but enhanced depletion rates are observed in sight lines with elevated levels of Cl ionization.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Elisabetta R. Micelotta, Eli Dwek, Jonathan D. Slavin
ASTRONOMY & ASTROPHYSICS
(2016)
Article
Astronomy & Astrophysics
Elisabetta R. Micelotta, Eli Dwek, Jonathan D. Slavin
ASTRONOMY & ASTROPHYSICS
(2016)
Article
Astronomy & Astrophysics
Marco Bocchio, Anthony P. Jones, Jonathan D. Slavin
ASTRONOMY & ASTROPHYSICS
(2014)
Article
Astronomy & Astrophysics
Arkaprabha Sarangi, Jonathan D. Slavin
Summary: The mechanism of dust formation in the dense shell between the forward shock and the reverse shock in supernovae has been modeled in this study. The variations of ejecta mass and pre-explosion mass-loss rates have been considered, showing the influence on dust formation. The dust masses in the dense shell range from 10(-3) to 0.8 M (circle dot) and are composed of O-rich and C-rich grains. The efficiency of dust production is affected by the mass-loss rate and the leftover H shell.
ASTROPHYSICAL JOURNAL
(2022)
Review
Astronomy & Astrophysics
Veerle J. Sterken, Lennart R. Baalmann, Bruce T. Draine, Egor Godenko, Konstantin Herbst, Hsiang-Wen Hsu, Silvan Hunziker, Vladislav Izmodenov, Rosine Lallement, Jonathan D. Slavin
Summary: This paper summarizes the processes, dynamics, and consequences of interstellar dust particles in heliospheric and astrospheric environments, and discusses theoretical modeling, in situ measurements, and remote sensing. The role of dust in the physics of the heliosphere and astrospheres is still underexplored, but it is an important and rapidly growing field of investigation.
SPACE SCIENCE REVIEWS
(2022)
Article
Astronomy & Astrophysics
Jeonghee Rho, Aravind P. Ravi, Jonathan D. Slavin, Heechan Cha
Summary: We analyze observations of the young supernova remnant (SNR) N132D in the Large Magellanic Cloud from Spitzer, WISE, and Herschel and find infrared ejecta concentrated in a central ring, coinciding with optical and X-ray ejecta. The Herschel images suggest the presence of freshly formed, cold dust in the SN ejecta, and the infrared spectra resemble those of another young SNR. Shock modeling of the Ne ejecta emission provides information about gas temperature and densities in the postshock region, while spectral fitting reveals dust mass in the central ejecta region and the need for forsterite grains.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
John C. Raymond, Jonathan D. Slavin, William P. Blair, Igor V. Chilingarian, Blakesley Burkhart, Ravi Sankrit
ASTROPHYSICAL JOURNAL
(2020)
Article
Astronomy & Astrophysics
John C. Raymond, Igor Chilingarian, William P. Blair, Ravi Sankrit, Johnathan D. Slavin, Blakesley Burkhart
ASTROPHYSICAL JOURNAL
(2020)
Article
Astronomy & Astrophysics
M. Bzowski, A. Czechowski, P. C. Frisch, S. A. Fuselier, A. Galli, J. Grygorczuk, J. Heerikhuisen, M. A. Kubiak, H. Kucharek, D. J. McComas, E. Mobius, N. A. Schwadron, J. Slavin, J. M. Sokol, P. Swaczyna, P. Wurz, E. J. Zirnstein
ASTROPHYSICAL JOURNAL
(2019)
Article
Astronomy & Astrophysics
Gao-Yuan Zhang, Jonathan D. Slavin, Adam Foster, Randall K. Smith, John A. ZuHone, Ping Zhou, Yang Chen
ASTROPHYSICAL JOURNAL
(2019)
Article
Astronomy & Astrophysics
Jonathan D. Slavin, Randall K. Smith, Adam Foster, Henry D. Winter, John C. Raymond, Patrick O. Slane, Hiroya Yamaguchi
ASTROPHYSICAL JOURNAL
(2017)
Proceedings Paper
Geochemistry & Geophysics
Jonathan D. Slavin
PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL SOLAR WIND CONFERENCE (SOLAR WIND 14)
(2016)
Article
Astronomy & Astrophysics
P. C. Frisch, B-G Andersson, A. Berdyugin, V. Piirola, H. O. Funsten, A. M. Magalhaes, D. B. Seriacopi, D. J. McComas, N. A. Schwadron, J. D. Slavin, S. J. Wiktorowicz
ASTROPHYSICAL JOURNAL
(2015)
Article
Astronomy & Astrophysics
Jonathan D. Slavin, Eli Dwek, Anthony P. Jones
ASTROPHYSICAL JOURNAL
(2015)
Article
Astronomy & Astrophysics
Jonathan D. Slavin, Eli Dwek, Mordecai-Mark Mac Low, Alex S. Hill
ASTROPHYSICAL JOURNAL
(2020)