77 citations · 710 across the 58 of their papers we have counts for
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The impact of the turbulent Mach number on star formation and the initial mass function
Sajay Sunny Mathew, Christoph Federrath, Amit Seta
Turbulence regulates star formation by influencing the density structure and fragmentation of molecular clouds, and therefore it is expected to play a key role in setting the initi…
Cosmic-ray electron propagation in the peculiar barred spiral galaxy NGC 2442
Shengtao Wang, Xiaohui Sun, Volker Heesen +13
Face-on spiral galaxies offer a favorable geometry for studying magnetic-field structures and cosmic-ray (CR) propagation because projection effects and structural overlap are redu…
Probing Magnetic Fields In and Around Galaxies Near and Far
S. A. Mao, Rainer Beck, Aritra Basu +14
In order to understand the magnetization of galaxies and the role of magnetic fields in feedback processes that govern star formation and galaxy evolution, it is essential to have…
The Multi-phase HI of the Milky Way and Nearby Galaxies
Marc-Antoine Miville-Deschênes, J. R. Dawson, Narendra Nath Patra +30
Atomic hydrogen (HI) is the dominant baryonic component of the interstellar medium (ISM) in Milky Way-like galaxies and the reservoir from which molecular clouds and stars ultimate…
Small-scale Magnetic Fields in the Milky Way and Nearby Galaxies
Yik Ki Ma, Amit Seta, Aritra Basu +13
Magnetic fields in galaxies span decades in physical scale, from the coherent magnetic fields on galactic scales (> kpc) to the random magnetic fields from 100 pc to the resistive…
Imprints of the Neutral Interstellar Medium on Polarized Synchrotron Emission and Faraday Rotation
Minjie Lei, S. E. Clark, Mehrnoosh Tahani +5
The interstellar medium (ISM) is a complex, multiphase medium, where disentangling the distribution of gas and magnetic field structure across different phases remains a considerab…
Magnetised CGM Gas at z~1 revealed by SPICE-RACS
Sunil Malik, S. P. O'Sullivan, A. J. M. Thomson +17
Magnetic fields are expected to permeate the circumgalactic medium (CGM) of galaxies, yet direct constraints at high redshift remain limited by the lack of high-quality Faraday rot…
On the relation between magnetic field strength and gas density in the interstellar medium. II. Density uncertainties and diffuse gas constraints
David Whitworth, Amit Seta, Ralph E. Pudritz +4
The relationship between magnetic field strength and gas density is essential to understand the interstellar medium and star formation. Zeeman measurements in dense atomic and mole…
Non-Gaussian Magnetic Structures in the Small-Scale Turbulent Dynamo
Sasi M. Behara, Amit Seta
The small-scale turbulent dynamo is a key mechanism for amplifying galactic magnetic fields, yet the resulting field morphology remains poorly understood. Using 3D driven turbulenc…
Probing the magneto-ionic medium of the Milky Way using pulsars
Saakshi Dhakal, Amit Seta
Magnetic fields are fundamental to the dynamics of the interstellar medium (ISM) in spiral galaxies and are often separated into large-scale, regular () and small-s…
Study of HI Turbulence in the SMC Using Multi-point Structure Functions
Bumhyun Lee, Min-Young Lee, Jungyeon Cho +19
Turbulence in the interstellar medium (ISM) plays an important role in many physical processes, including forming stars and shaping complex ISM structures. In this work, we investi…
Understanding gas mixing in the circumgalactic medium
Hilay Shah, Freeke van de Voort, Amit Seta +1
We study gas mixing in a simulated Milky Way-mass galaxy's circumgalactic medium (CGM) using cosmological `zoom-in' simulations. We insert tracer dyes in the CGM with different gas…
A new window into the sub-parsec scale magnetic field in the Milky Way? Unveiling small-scale magneto-ionic structures with Faraday complexity
Yik Ki Ma, Amit Seta, N. M. McClure-Griffiths +9
Radio broadband spectro-polarimetric observations are sensitive to the spatial fluctuations of the Faraday depth (FD) within the telescope beam. Such FD fluctuations are referred t…
The Polarisation Sky Survey of the Universe's Magnetism (POSSUM): Science Goals and Survey Description
B. M. Gaensler, G. H. Heald, N. M. McClure-Griffiths +57
The Australian SKA Pathfinder (ASKAP) offers powerful new capabilities for studying the polarised and magnetised Universe at radio wavelengths. In this paper, we introduce the Pola…
Magnetic fields in the multiphase interstellar medium of the Milky Way: turbulent kinetic and magnetic energy density relation
Amit Seta, N. M. McClure-Griffiths
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…
A comparison of the turbulent dynamo in weakly-collisional and collisional plasmas: from subsonic to supersonic turbulence
Radhika Achikanath Chirakkara, Christoph Federrath, Amit Seta
Weakly-collisional plasmas, such as the solar wind or the intra-cluster medium (ICM) of galaxy clusters, evolve in the presence of dynamically strong magnetic fields. The turbulent…
Turbulent Dynamo and Magnetic Fields in the Multiphase Interstellar Medium
Amit Seta
Even though the interstellar medium (ISM) of star-forming galaxies has been known to have a multiphase structure (broadly hot, warm, and cold phases) since the 1970s, how magnetic…
The influence of the cloud virial parameter on the initial mass function
Sajay Sunny Mathew, Christoph Federrath, Amit Seta
Crucial for star formation is the interplay between gravity and turbulence. The observed cloud virial parameter, , which is the ratio of twice the turbulent kinet…
Local HI Absorption towards the Magellanic Cloud foreground using ASKAP
Hiep Nguyen, N. M. McClure-Griffiths, James Dempsey +21
We present the largest Galactic neutral hydrogen HI absorption survey to date, utilizing the Australian SKA Pathfinder Telescope at an unprecedented spatial resolution of 30''. Thi…
Magnetised HI superbubbles in the Small Magellanic Cloud revealed by the POSSUM pilot survey
Seoyoung Lyla Jung, A. Seta, J. M. Price +13
Neutral hydrogen (HI) bubbles and shells are common in the interstellar medium (ISM). Studying their properties provides insight into the characteristics of the local ISM as well a…
Structure functions with higher-order stencils as a probe to separate small- and large-scale magnetic fields
Amit Seta, Christoph Federrath
Magnetic fields are an energetically important component of star-formation galaxies, but it is often difficult to measure their properties from observations. One of the complexitie…
Probing the Magnetised Gas Distribution in Galaxy Groups and the Cosmic Web with POSSUM Faraday Rotation Measures
Craig S. Anderson, N. M. McClure-Griffiths, L. Rudnick +21
We present initial results from the Polarisation Sky Survey of the Universe's Magnetism (POSSUM), analysing 22,817 Faraday Rotation Measures (RMs) with median uncertainties of 1.2…
Wide-binary eccentricity distribution in young star clusters: dependence on the binary separation and mass
Sajay Sunny Mathew, Siyao Xu, Christoph Federrath +2
We study the wide-binary eccentricity () distribution in young star clusters and the role of turbulence in setting the form of the distribution using magnetohydrodynamical (…
Faraday moments of the Southern Twenty-centimeter All-sky Polarization Survey (STAPS)
N. Raycheva, M. Haverkorn, S. Ideguchi +15
Faraday tomography of broadband radio polarization surveys enables us to study magnetic fields and their interaction with the interstellar medium (ISM). Such surveys include the Gl…