140 citations · 2k across the 60 of their papers we have counts for
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3D Magnetic Field Vectors in Space: Bubbles, Clouds, and Filaments
Mehrnoosh Tahani, Anna Ordog, Jennifer West +3
Magnetic fields play important roles in the star-formation process across different spatial scales. The interplay between magnetic field strength (a key component of the interstell…
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…
SIMPLIFI-Study of Interstellar Magnetic Polarization: A Legacy Investigation of Filaments. II. Enhancement of grain alignment near embedded protostars in the DR21 Ridge
S. Kumar, T. G. S. Pillai, G. V. Panopoulou +10
Thermal dust continuum polarimetry is a powerful indirect probe of magnetic field geometry in dense molecular clouds while at the same time providing information on the alignment o…
Evidence for cloud-to-cloud variations in the ratio of polarized thermal dust emission to starlight polarization
Nidhi Mehandiratta, Georgia V. Panopoulou, Eirik Gjerløw +12
The correlation between optical starlight polarization and polarized thermal dust emission can be used to infer intrinsic dust properties. This correlation is quantified by the rat…
The magnetic field of the Radcliffe Wave: starlight polarization at nearest approach to the Sun
G. V. Panopoulou, C. Zucker, D. Clemens +6
We investigate the geometry of the magnetic field towards the Radcliffe Wave, a coherent 3-kpc-long part of the nearby Local Arm recently discovered via three-dimensional dust mapp…
The first degree-scale starlight-polarization-based tomography map of the magnetized interstellar medium
V. Pelgrims, N. Mandarakas, R. Skalidis +21
We present the first degree-scale tomography map of the dusty magnetized interstellar medium (ISM) from stellar polarimetry and distance measurements. We used the RoboPol polarimet…
Synchrotron Signatures of Cosmic Ray Transport Physics in Galaxies
Sam B. Ponnada, Iryna S. Butsky, Raphael Skalidis +7
Cosmic rays (CRs) may drive outflows and alter the phase structure of the circumgalactic medium, with potentially important implications on galaxy formation. However, these effects…
Synchrotron Emission on FIRE: Equipartition Estimators of Magnetic Fields in Simulated Galaxies with Spectrally-Resolved Cosmic Rays
Sam B. Ponnada, Georgia V. Panopoulou, Iryna S. Butsky +7
Synchrotron emission is one of few observable tracers of galactic magnetic fields (\textbf{B}) and cosmic rays (CRs). Much of our understanding of \textbf{B} in galaxies comes from…
A compilation of optical starlight polarization catalogs
G. V. Panopoulou, L. Markopoulioti, F. Bouzelou +7
Polarimetry of stars at optical and near-infrared wavelengths is an invaluable tool for tracing interstellar dust and magnetic fields. Recent studies have demonstrated the power of…
CO enhancement by magnetohydrodynamic waves; Striations in the Polaris Flare
R. Skalidis, K. Gkimisi, K. Tassis +4
The formation of molecular gas in interstellar clouds is a slow process, but is enhanced by gas compression. Magnetohydrodynamic (MHD) waves create compressed quasiperiodic linear…
Starlight-polarization-based tomography of the magnetized interstellar medium: PASIPHAE's line-of-sight inversion method
V. Pelgrims, G. V. Panopoulou, K. Tassis +20
We present the first Bayesian method for tomographic decomposition of the plane-of-sky orientation of the magnetic field with the use of stellar polarimetry and distance. This stan…
Magnetic Fields on FIRE: Comparing B-fields in the multiphase ISM and CGM of Simulated L Galaxies to Observations
Sam B. Ponnada, Georgia V. Panopoulou, Iryna S. Butsky +7
The physics of magnetic fields () and cosmic rays (CRs) have recently been included in simulations of galaxy formation. However, significant uncertainties remain in how…
Initial Conditions for Star Formation: A Physical Description of the Filamentary ISM
A. Hacar, S Clark, F. Heitsch +4
The interstellar medium contains filamentary structure over a wide range of scales. Understanding the role of this structure, both as a conduit of gas across the scales and a diagn…
The width of Herschel filaments varies with distance
G. V. Panopoulou, S. E. Clark, A. Hacar +5
Context: Filamentary structures in nearby molecular clouds have been found to exhibit a characteristic width of 0.1 pc, as observed in dust emission. Understanding the origin of th…
HI-H transition: exploring the role of the magnetic field
R. Skalidis, K. Tassis, G. V. Panopoulou +6
Atomic gas in the diffuse interstellar medium (ISM) is organized in filamentary structures. These structures usually host cold and dense molecular clumps. The Galactic magnetic fie…
Dust in the Wind with Resonant Drag Instabilities: I. The Dynamics of Dust-Driven Outflows in GMCs and HII Regions
Philip F. Hopkins, Anna L. Rosen, Jonathan Squire +4
Radiation-dust driven outflows, where radiation pressure on dust grains accelerates gas, occur in many astrophysical environments. Almost all previous numerical studies of these sy…
Revisiting the distance to radio Loops I and IV using Gaia and radio/optical polarization data
G. V. Panopoulou, C. Dickinson, A. C. S. Readhead +2
Galactic synchrotron emission exhibits large-angular-scale features known as radio spurs and loops. Determining the physical size of these structures is important for understanding…
Maps of the number of HI clouds along the line of sight at high galactic latitude
G. V. Panopoulou, D. Lenz
Characterizing the structure of the Galactic interstellar medium (ISM) in three dimensions is of high importance for accurate modeling of dust emission as a foreground to the Cosmi…
Extreme Starlight Polarization in a Region with Highly Polarized Dust Emission
G. V. Panopoulou, B. S. Hensley, R. Skalidis +2
Galactic dust emission is polarized at unexpectedly high levels, as revealed by Planck. The origin of the observed polarization fractions can be identified by charact…
Demonstration of magnetic field tomography with starlight polarization towards a diffuse sightline of the ISM
Georgia V. Panopoulou, Konstantinos Tassis, Raphael Skalidis +7
The availability of large datasets with stellar distance and polarization information will enable a tomographic reconstruction of the (plane-of-the-sky-projected) interstellar magn…
Local measurements of the mean interstellar polarization at high Galactic latitudes
R. Skalidis, G. V. Panopoulou, K. Tassis +4
We conduct a small-scale pathfinding survey designed to identify the average polarization properties of the diffuse ISM locally at the lowest dust content regions. We perform deep…
A closer look at the "characteristic" width of molecular cloud filaments
G. V. Panopoulou, I. Psaradaki, R. Skalidis +2
Filaments in Herschel molecular cloud images are found to exhibit a "characteristic width". This finding is in tension with spatial power spectra of the data, which show no indicat…
The magnetic field and dust filaments in the Polaris Flare
G. V. Panopoulou, I. Psaradaki, K. Tassis
In diffuse molecular clouds, possible precursors of star-forming clouds, the effect of the magnetic field is unclear. In this work we compare the orientations of filamentary struct…
Magnetic Field - Gas Density Relation and Observational Implications Revisited
A. Tritsis, G. V. Panopoulou, T. Ch. Mouschovias +2
We revisit the relation between magnetic-field strength () and gas density () for contracting interstellar clouds and fragments (or, cores), which is central in observational…