Results 111 to 120 of about 3,397,976 (217)

B-fields and Dust in Interstellar Filaments Using Dust Polarization (BALLAD-POL). III. Grain Alignment and Disruption Mechanisms in G34.43+0.24 Using Polarization Observations from JCMT/POL-2

The Astrophysical Journal
Polarization of starlight and thermal dust emission due to aligned non-spherical grains helps us to trace magnetic field ( B -field) morphology in molecular clouds and to study grain alignment mechanisms.
Saikhom Pravash, Archana Soam, Pham Ngoc Diep, Thiem Hoang, Nguyen Bich Ngoc, Le Ngoc Tram   +5 more
doaj   +1 more source

Topological signatures of interstellar magnetic fields - I. Betti numbers and persistence diagrams [PDF]

The interstellar medium (ISM) is a magnetised system in which transonic or supersonic turbulence is driven by supernova explosions. This leads to the production of intermittent, filamentary structures in the ISM gas density, whilst the associated dynamo ...
Shukurov A, Makarenko I, Bushby P, Rodrigues LFS, Henderson R, Fletcher A   +5 more
core   +1 more source

B-fields and Dust in Interstellar Filaments Using Dust Polarization (BALLAD-POL). VI. Grain Alignment Mechanisms in the Massive Quiescent Filament G16.96+0.27 Using Dust Polarization Observations from JCMT/POL-2

The Astrophysical Journal Supplement Series
Dust polarization induced by aligned nonspherical grains acts as an important tool to trace the magnetic field ( B -field) morphologies and strengths in molecular clouds and constrain grain properties and their alignment mechanisms.
Saikhom Pravash, Thiem Hoang, Archana Soam, Qi-Lao Gu, Tie Liu, Pham Ngoc Diep, Le Ngoc Tram, Nguyen Bich Ngoc   +7 more
doaj   +1 more source

Interstellar Magnetic Fields: An Observational Perspective

, 1989
Abstract:  Chapter 1 establishes the plausibility of “magnetic molecular clouds.” We show that the empirically known relations between spectral line width, density, and cloud size can be derived from a virial equilibrium model where gravity is balanced by the sum of magnetic and pressure support.
openaire   +2 more sources

MC-BLOS: Automated Software for Determining the Line-of-sight Component of Magnetic Fields Associated with Molecular Clouds

The Astrophysical Journal
While plane-of-sky magnetic field observations in molecular clouds are now common, observations of their line-of-sight magnetic field remain limited. To address this issue, M. Tahani et al. developed a technique based on Faraday rotation.
Mehrnoosh Tahani, John Ming Ngo, Jennifer Glover, Ryan Clairmont, Gabriel M. Zarazua, René Plume   +5 more
doaj   +1 more source

Gravity, Magnetic Fields and Star Formation

, 2016
As much as any science field, astronomy is about origins. Therefore, the origins of stars is a central question in the field. For more than a century, it has been known that stars form via gravitational contraction of clouds of interstellar gas and dust.
Troland, Thomas H.
core  

Early phase of shock formation in pair plasma colliding with electron-proton plasma. [PDF]

Sci Rep
Dieckmann ME.
europepmc   +1 more source

The IMAP Magnetometer. [PDF]

Space Sci Rev
Horbury TS, O'Brien HL, Greenaway C, Roberts A, Crabtree A, Tomes M, Facchinelli M, Finlayson M, Bharatia M, Fauchon-Jones E, Tapley M, Pope S, Jones D, Richter I, Dalla S, Russell C, Schwadron NA, Gkioulidou M, McComas DJ.   +18 more
europepmc   +1 more source

Direct Samples of Interstellar and Interplanetary Material with IMAP. [PDF]

Space Sci Rev
Szalay JR, Provornikova E, Ayari E, Bzowski M, Christian ER, Funsten HO, Galli A, Gkioulidou M, Horányi M, Livi S, McComas DJ, Möbius E, Ogasawara K, Rahmanifard F, Rankin JS, Reisenfeld DB, Schwadron NA, Sternovsky Z, Swaczyna P, Turner D, Zank GP, Zirnstein EJ.   +21 more
europepmc   +1 more source

Transport of Electrons in Tangled Magnetic Fields. [PDF]

Space Sci Rev
Verscharen D, Jeffrey N, Artemyev A, Coburn JT, Kunz MW, Pezzi O, Riquelme M, Svenningsson I, Wilson Iii LB.   +8 more
europepmc   +1 more source