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相关论文: The Galactic Magnetic Field's Effect in Star-Formi…

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The magnetic field structure of the Milky Way can offer critical insights into the origin of galactic magnetic fields. Measurements of magnetic structures of the Milky Way are still sparse in far regions of the Galactic disk and halo.…

星系天体物理 · 物理学 2025-12-29 Jun Xu , J. L. Han , Weicong Jing , The SKA Pulsar Science Working Group

During the past decade the dynamical importance of magnetic fields in molecular clouds has been increasingly recognized, as observational evidence has accumulated. However, how a magnetic field affect star formation is still unclear.…

星系天体物理 · 物理学 2020-09-15 C. Y. Law , H. -b. Li , Z. Cao , C. -Y. Ng

Magnetic fields in nearby, star-forming galaxies reveal both large-scale patterns and small-scale structures. A large-scale field reversal may exist in the Milky Way but no such reversals have been observed so far in external galaxies. The…

星系天体物理 · 物理学 2015-05-30 David Moss , Rodion Stepanov , Tigran Arshakian , Rainer Beck , Marita Krause , Dmitri Sokoloff

A model of magnetic field structure is presented to help test the prevalence of flux freezing in star-forming clouds of various shapes, orientations, and degrees of central concentration, and to estimate their magnetic field strength. The…

星系天体物理 · 物理学 2018-11-28 Philip C. Myers , Shantanu Basu , Sayantan Auddy

Magnetic fields are ubiquitous and essential in star formation. In particular, their role in regulating formation of stars across diverse environments like HII regions needs to be well understood. In this study, we present magnetic field…

星系天体物理 · 物理学 2021-04-28 R. Devaraj , D. P. Clemens , L. K. Dewangan , A. Luna , T. P. Ray , J. Mackey

Magnetic fields play a crucial role at all stages of the formation of low mass stars and planetary systems. In the final stages, in particular, they control the kinematics of in-falling gas from circumstellar discs, and the launching and…

太阳与恒星天体物理 · 物理学 2015-05-19 S. G. Gregory , M. Jardine , C. G. Gray , J. -F. Donati

Stars form predominantly in clusters inside dense clumps of molecular clouds that are both turbulent and magnetized. The typical size and mass of the cluster-forming clumps are $\sim 1$ pc and $\sim 10^2 - $ 10$^3$ M$_\odot$, respectively.…

星系天体物理 · 物理学 2015-05-19 Fumitaka Nakamura , Zhi-Yun Li

The propagation trajectories of the highest energy cosmic rays (HECRs) are deflected by not only intergalactic magnetic field but also Galactic magnetic field (GMF). These magnetic fields can weaken the positive correlation between the…

高能天体物理现象 · 物理学 2010-12-03 Hajime Takami , Katsuhiko Sato

Magnetic fields are an important component of the interstellar medium (ISM) of galaxies. The thermal gas in the ISM has a multiphase structure, broadly divided into ionised, atomic, and molecular phases. The connection between the…

星系天体物理 · 物理学 2025-04-01 Amit Seta , N. M. McClure-Griffiths

Molecular clouds are sites of star formation. Magnetic fields are believed to play an important role in their dynamics and shaping morphology. We aim to study any possible correlation that might exist between the magnetic fields orientation…

星系天体物理 · 物理学 2022-10-26 Ekta Sharma , Maheswar Gopinathan , Archana Soam , Chang Won Lee , T. R. Seshadri

Magnetic fields pervade in the interstellar medium (ISM) and are believed to be important in the process of star formation, yet probing magnetic fields in star formation regions is challenging. We propose a new method to use Faraday…

星系天体物理 · 物理学 2018-06-27 M. Tahani , R. Plume , J. C. Brown , J. Kainulainen

Auger data show evidence for a correlation between ultrahigh-energy cosmic rays (UHECRs) and nearby starburst galaxies. This intriguing correlation is consistent with data collected by the Telescope Array, which have revealed a much more…

高能天体物理现象 · 物理学 2019-07-16 Jorge F. Soriano , Luis A. Anchordoqui , Diego F. Torres

Magnetic fields are found in many astrophysical objects, ranging from galaxy clusters to the interstellar medium of galaxies and neutron stars. Strong magnetic fields are also observed in massive stars, but it is still unclear how they are…

Starlight polarimetry, when combined with accurate distance measurements, allows for exploration of the three-dimensional structure of local magnetic fields in great detail. We present optical polarimetric observations of stars in and close…

Interstellar magnetic fields are strong: up to 25 muG in spiral arms and 40 muG in nuclear regions. In the spiral galaxy NGC 6946 the average magnetic energy density exceeds that of the thermal gas. Magnetic fields control the evolution of…

天体物理学 · 物理学 2017-01-25 Rainer Beck

We present a study of the vertical magnetic field of the Milky Way towards the Galactic poles, determined from observations of Faraday rotation toward more than 1000 polarized extragalactic radio sources at Galactic latitudes |b| > 77 degs,…

A combination of observation, theory, modeling, and laboratory plasma experiments provides a multifaceted approach to develop a much greater understanding of how magnetic fields arise in galactic settings and how these magnetic fields…

星系天体物理 · 物理学 2009-02-23 A. Lazarian , S. Boldyrev , C. Forest , J. Sarff , P. Terry

Synchrotron emission, its polarization and its Faraday rotation at radio frequencies of 0.2-10 GHz are powerful tools to study the strength and structure of cosmic magnetic fields. The observational results are reviewed for spiral, barred…

宇宙学与河外天体物理 · 物理学 2015-05-27 Rainer Beck

We seek to obtain a picture of the interstellar magnetic field in the Galactic center region that is as clear and complete as possible. To that end, we review the observational knowledge that has built up over the past 25 years on…

星系天体物理 · 物理学 2015-05-13 Katia Ferriere