activity
20092023
most citedCosmic-ray ionization of molecular clouds

387 citations · 4.6k across the 82 of their papers we have counts for

collaborators
Showing astro-ph.SRShow all

17 papers · 1 filter

astro-ph.SR2022

Ionisation of inner T Tauri star discs: effects of in-situ energetic particles produced by strong magnetic reconnection events

V Brunn, A Marcowith, C Sauty +3

Magnetic reconnection is one of the major particle acceleration processes in space and astrophysical plasmas. Low-energy supra-thermal particles emitted by magnetic reconnection ar…

astro-ph.SR2022★ 80 cited

The Central 1000 au of a Pre-stellar Core Revealed with ALMA. II. Almost Complete Freeze-out

Paola Caselli, Jaime E. Pineda, Olli Sipilä +18

Pre-stellar cores represent the initial conditions in the process of star and planet formation. Their low temperatures (10 K) allow the formation of thick icy dust mantles, whic…

astro-ph.SR2020★ 74 cited

Formation and Evolution of Disks around Young Stellar Objects

Bo Zhao, Kengo Tomida, Patrick Hennebelle +9

Recent observations have suggested that circumstellar disks may commonly form around young stellar objects. Although the formation of circumstellar disks can be a natural result of…

astro-ph.SR2019

Polarization in Disks

Ian Stephens, Zhi-Yun Li, Haifeng Yang +24

Polarized dust emission outside of disks reveal the magnetic field morphology of molecular clouds. Within disks, however, polarized dust emission can arise from very different mech…

astro-ph.SR2019★ 72 cited

The central 1000 AU of a pre-stellar core revealed with ALMA. I. 1.3 mm continuum observations

Paola Caselli, Jaime E. Pineda, Bo Zhao +8

Stars like our Sun form in self-gravitating dense and cold structures within interstellar clouds, called pre-stellar cores. Although much is known about the physical structure of d…

astro-ph.SR2019★ 1 cited

Constraining the stellar energetic particle flux in young solar-like stars

Ch. Rab, M. Padovani, M. Güdel +3

Anomalies in the abundance measurements of short lived radionuclides in meteorites indicate that the protosolar nebulae was irradiated by a large number of energetic particles ($E\…

astro-ph.SR2018

ALMA polarimetric studies of rotating jet/disk systems

F. Bacciotti, J. M. Girart, M. Padovani +9

We have recently obtained polarimetric data at mm wavelengths with ALMA for the young systems DG Tau and CW Tau, for which the rotation properties of jet and disk have been investi…

astro-ph.SR2018★ 106 cited

ALMA observations of polarized emission toward the CW Tau and DG Tau protoplanetary disks: constraints on dust grain growth and settling

Francesca Bacciotti, Josep Miquel Girart, Marco Padovani +9

We present polarimetric data of CW Tau and DG Tau, two well-known Class II disk/jet systems, obtained with the Atacama Large Millimeter/submillimeter Array at 870 m and 0."2 ave…

astro-ph.SR2018★ 75 cited

Magnetic field in a young circumbinary disk

Felipe O. Alves, Josep M. Girart, Marco Padovani +6

We use polarization observations of a circumbinary disk to investigate how the polarization properties change at distinct frequency bands. Our goal is to discern the main mechanism…

astro-ph.SR2017★ 62 cited

Stellar energetic particle ionization in protoplanetary disks around T Tauri stars

Ch. Rab, M. Güdel, M. Padovani +4

Anomalies in the abundance measurements of short lived radionuclides in meteorites indicate that the protosolar nebulae was irradiated by a high amount of energetic particles (E$\g…

astro-ph.SR2016★ 12 cited

A correlation between chemistry, polarization and dust properties in the Pipe Nebula starless core FeSt 1-457

Carmen Juárez, Josep M. Girart, Pau Frau +6

Pre-stellar cores within molecular clouds provide the very initial conditions in which stars are formed. We use the IRAM 30m telescope and the PdBI to study the chemical and physic…

astro-ph.SR2015★ 87 cited

Cosmic-ray acceleration in young protostars

Marco Padovani, Patrick Hennebelle, Alexandre Marcowith +1

The main signature of the interaction between cosmic rays and molecular clouds is the high ionisation degree. This decreases towards the densest parts of a cloud, where star format…

astro-ph.SR2015

Cosmic-ray propagation at small scale: a support for protostellar disc formation

Marco Padovani, Daniele Galli, Patrick Hennebelle +2

As long as magnetic fields remain frozen into the gas, the magnetic braking prevents the formation of protostellar discs. This condition is subordinate to the ionisation fraction c…

astro-ph.SR2015

Cosmic-ray heating of molecular cloud cores

Daniele Galli, Marco Padovani

Cosmic rays are an important source of heating in the interstellar medium, in particular in dense molecular cloud cores shielded from the external ultraviolet radiation field. The…

astro-ph.SR2011★ 85 cited

Effects of magnetic fields on the cosmic-ray ionization of molecular cloud cores

Marco Padovani, Daniele Galli

Low-energy cosmic rays are the dominant source of ionization for molecular cloud cores. The ionization fraction, in turn, controls the coupling of the magnetic field to the gas and…

astro-ph.SR2011★ 2 cited

Adaptable Radiative Transfer Innovations for Submillimeter Telescopes (ARTIST)

Marco Padovani, Jes Jørgensen

Submillimeter observations are a key for answering many of the big questions in modern-day astrophysics, such as how stars and planets form, how galaxies evolve, and how material c…

astro-ph.SR2009★ 387 cited

Cosmic-ray ionization of molecular clouds

Marco Padovani, Daniele Galli, Alfred E. Glassgold

Low-energy cosmic rays are a fundamental source of ionization for molecular clouds, influencing their chemical, thermal and dynamical evolution. The purpose of this work is to expl…