387 citations · 4.6k across the 82 of their papers we have counts for
30 papers · 1 filter
The Orion-Taurus ridge: a synchrotron radio loop at the edge of the Orion-Eridanus superbubble
Andrea Bracco, Marco Padovani, Juan D. Soler
Large-scale synchrotron loops are recognized as the main source of diffuse radio-continuum emission in the Galaxy at intermediate and high Galactic latitudes. Their origin, however…
SOLIS XVII: Jet candidate unveiled in OMC-2 and its possible link to the enhanced cosmic-ray ionisation rate
V. Lattanzi, F. O. Alves, M. Padovani +9
The study of the early phases of star and planet formation is important to understand the physical and chemical history of stellar systems such as our own. In particular, protostar…
Cosmic-ray-induced H line emission: Astrochemical modeling and implications for JWST observations
Brandt A. L. Gaches, Shmuel Bialy, Thomas G. Bisbas +3
Context: It has been proposed that H near-infrared lines may be excited by cosmic rays and allow for a determination of the cosmic-ray ionization rate in dense gas. One-dimensi…
The Effects of Cosmic Rays on the Chemistry of Dense Cores
Ross O'Donoghue, Serena Viti, Marco Padovani +1
Cosmic rays are crucial for the chemistry of molecular clouds and their evolution. They provide essential ionizations, dissociations, heating and energy to the cold, dense cores. A…
First look at the multiphase interstellar medium with synthetic observations of low-frequency Faraday tomography
A. Bracco, E. Ntormousi, V. Jelić +6
Faraday tomography of radio polarimetric data below 200 MHz from LOFAR are providing us with a new perspective on the diffuse and magnetized interstellar medium (ISM). Of particula…
Magnetically regulated collapse in the B335 protostar? II. Observational constraints on gas ionization and magnetic field coupling
Victoria Cabedo, Anaelle Maury, Josep Miquel Girart +4
Non-ideal magnetohydrodynamic effects that rule the coupling of the magnetic field to the circumstellar gas during the low-mass star formation process depend heavily on the local p…
Cosmic rays in molecular clouds probed by H rovibrational lines -- Perspectives for the James Webb Space Telescope
Marco Padovani, Shmuel Bialy, Daniele Galli +7
Cosmic rays (CRs) at sub-TeV energies play a fundamental role in the chemical and dynamical evolution of molecular clouds, as they control the ionisation, dissociation, and excitat…
Constraining the cosmic-ray ionization rate and their spectrum with NIR spectroscopy of dense clouds -- A test-bed for JWST
Shmuel Bialy, Sirio Belli, Marco Padovani
Low-energy cosmic-rays (CRs) control the thermo-chemical state and the coupling between gas and magnetic fields in dense molecular clouds, the sites of star-formation. However, cur…
The cosmic-ray ionisation rate in the pre-stellar core L1544
Elena Redaelli, Olli Sipilä, Marco Padovani +3
Context. Cosmic rays (CRs) play an important role in the chemistry and dynamics of the interstellar medium. In dense environments, they represent the main ionising agent, driving t…
Structured velocity field in the inner envelope of B335: ALMA observations of rare CO isotopologues
Victoria Cabedo, Anaëlle Maury, Josep Miquel Girart +1
Studying Class 0 objects is very important, as it allows to characterize dynamical processes at the onset of the star formation process, and to determine the physical mechanisms re…
Gravity Driven Magnetic Field at ~1000 au Scales in High-mass Star Formation
Patricio Sanhueza, Josep Miquel Girart, Marco Padovani +20
A full understanding of high-mass star formation requires the study of one of the most elusive components of the energy balance in the interstellar medium: magnetic fields. We repo…
Rigorous theory for secondary cosmic-ray ionization
Alexei V. Ivlev, Kedron Silsbee, Marco Padovani +1
The energy spectrum of electrons produced in molecular gas by interstellar cosmic rays (CRs) is rigorously calculated as a function of gas column density traversed by the CRs.…
Magnetism Science with the Square Kilometre Array
George Heald, Sui Ann Mao, Valentina Vacca +41
The Square Kilometre Array (SKA) will answer fundamental questions about the origin, evolution, properties, and influence of magnetic fields throughout the Universe. Magnetic field…
Impact of low-energy cosmic rays on star formation
Marco Padovani, Alexei V. Ivlev, Daniele Galli +7
In recent years, exciting developments have taken place in the identification of the role of cosmic rays in star-forming environments. Observations from radio to infrared wavelengt…
The physical and chemical structure of Sagittarius B2 -- V. Non-thermal emission in the envelope of Sgr B2
F. Meng, Á. Sánchez-Monge, P. Schilke +8
The giant molecular cloud Sagittarius B2 (hereafter SgrB2) is the most massive region with ongoing high-mass star formation in the Galaxy. In the southern region of the 40-pc large…
ALMA resolves the hourglass magnetic field in G31.41+0.31
M. T. Beltrán, M. Padovani, J. M. Girart +9
Context. Submillimeter Array (SMA) 870 micron polarization observations of the hot molecular core G31.41+0.31 revealed one of the clearest examples up to date of an hourglass-shape…
The challenges of modelling microphysics: ambipolar diffusion, chemistry, and cosmic rays in MHD shocks
T. Grassi, M. Padovani, J. P. Ramsey +4
From molecular clouds to protoplanetary disks, non-ideal magnetic effects are important in many astrophysical environments. Indeed, in star and disk formation processes, it has bec…
Production of atomic hydrogen by cosmic rays in dark clouds
Marco Padovani, Daniele Galli, Alexei V. Ivlev +2
The presence of small amounts of atomic hydrogen, detected as absorption dips in the 21 cm line spectrum, is a well-known characteristic of dark clouds. The abundance of hydrogen a…
Protonated CO2 in massive star-forming clumps
F. Fontani, A. Vagnoli, M. Padovani +3
Interstellar CO2 is an important reservoir of carbon and oxygen, and one of the major constituents of the icy mantles of dust grains, but it is not observable directly in the cold…
The onset of energetic particle irradiation in Class 0 protostars
C. Favre, A. Lopez-Sepulcre, C. Ceccarelli +11
The early stages of low-mass star formation are likely to be subject to intense ionization by protostellar energetic MeV particles. As a result, the surrounding gas is enriched in…
Local Magnetic Field Role in Star Formation
Patrick M. Koch, Ya-Wen Tang, Paul T. P. Ho +14
We highlight distinct and systematic observational features of magnetic field morphologies in polarized submm dust continuum. We illustrate this with specific examples and show sta…
Interstellar dust charging in dense molecular clouds: cosmic ray effects
Alexei Ivlev, Marco Padovani, Daniele Galli +1
The local cosmic-ray (CR) spectra are calculated for typical characteristic regions of a cold dense molecular cloud, to investigate two so far neglected mechanisms of dust charging…
The Importance of the Magnetic Field from an SMA-CSO-Combined Sample of Star-Forming Regions
Patrick M. Koch, Ya-Wen Tang, Paul T. P. Ho +14
Submillimeter dust polarization measurements of a sample of 50 star-forming regions, observed with the SMA and the CSO covering pc-scale clouds to mpc-scale cores, are analyzed in…
The role of cosmic rays on magnetic field diffusion and the formation of protostellar discs
Marco Padovani, Daniele Galli, Patrick Hennebelle +2
The formation of protostellar discs is severely hampered by magnetic braking, as long as magnetic fields remain frozen in the gas. The latter condition depends on the levels of ion…