1.4k citations · 4.6k across the 60 of their papers we have counts for
60 papers
Cosmic Rulers: Masers as Tools for Probing Structure in the Galaxy and Beyond, from AU to kpc
Kazi L. J. Rygl, Anna Bartkiewicz, Olga Bayandina +9
Maser emission provides an unique window into astronomical sources across vast spatial scales - from tens to hundreds of astronomical units around protostars and evolved stars up t…
Jets and Outflows in Young Stellar Objects with the SKAO
Giovanni Sabatini, Gemma Busquet, Carlos Carrasco-González +48
Jets and outflows are ubiquitous phenomena associated with the formation of young stellar objects (YSOs). They play a crucial role in removing angular momentum from the accreting s…
A FAST search for radio pulsations during the dormant state of the AMSPs IGR J00291+5934 and MAXI J1957+032
A. Marino, E. Parent, F. Coti Zelati +15
Accreting millisecond pulsars (AMSPs) and transitional millisecond pulsars (tMSPs) are neutron star low-mass X-ray binaries which can evolve into "recycled" radio millisecond pulsa…
Detections of Compact Radio Continuum toward Methanol Maser Rings Using the VLA
Anna Bartkiewicz, Olga Bayandina, Alberto Sanna +5
High-mass protostars are deeply embedded in dust inside their natal cores and are not easily detectable. However, maser emission at centimeter wavelengths, owing to its high bright…
Protostellar Outflows at the EarliesT Stages (POETS). VII. Circumstellar gas kinematics traced by water masers inside the HC HII region NGC7538 IRS1
Luca Moscadelli, Ciriaco Goddi, Tomoya Hirota +1
This article focuses on NGC7538 IRS1, one of the most luminous and studied HC HII regions in the northern hemisphere. Our aim is to identify the young stellar objects (YSOs) embedd…
The Expanding 3 kpc Arms Are Neither Expanding nor Spiral Arms but X1 Orbits Driven by the Galactic Bar
Jayender Kumar, Mark J. Reid, T. M. Dame +6
Near the center of our Milky Way is a bar-like structure and the so-called Expanding 3-kpc arms. We currently have limited knowledge of this important region, since we are about 8.…
The magnetic field of a magnetohydrodynamic disk wind: Water maser observations and simulations
Luca Moscadelli, André Oliva, Gabriele Surcis +3
Our goal is to measure and model the magnetic field distribution in the disk wind of the young stellar object (YSO) IRAS 21078+5211. We performed sensitive global Very Long Baselin…
On the cyclotron absorption line and evidence of the spectral transition in SMC X-2 during 2022 giant outburst
G. K. Jaisawal, G. Vasilopoulos, S. Naik +7
We report comprehensive spectral and temporal properties of the Be/X-ray binary pulsar SMC X-2 using X-ray observations during the 2015 and 2022 outbursts. The pulse profile of the…
The SOUL view of IRAS20126+4104. Kinematics and variability of the H jet from a massive protostar
F. Massi, A. Caratti o Garatti, R. Cesaroni +20
We exploit the increased sensitivity of the recently installed AO SOUL at the LBT to obtain new high-spatial-resolution NIR images of the massive young stellar object IRAS20126+410…
The unaltered pulsar: GRO J1750-27, a super-critical X-ray neutron star that does not blink an eye
C. Malacaria, L. Ducci, M. Falanga +11
When accreting X-ray pulsars (XRPs) undergo bright X-ray outbursts, their luminosity-dependent spectral and timing features can be analysed in detail. The XRP GRO J1750-27 recently…
Snapshot of a magnetohydrodynamic disk wind traced by water maser observations
Luca Moscadelli, Alberto Sanna, Henrik Beuther +2
The formation of astrophysical objects of different nature and size, from black holes to gaseous giant planets, involves a disk-jet system, where the disk drives the mass accretion…
Resolving the collimation zone of an intermediate-mass protostar
Adriana R. Rodríguez-Kamenetzky, Carlos Carrasco-González, Luis Felipe Rodríguez Jorge +12
We report new VLA and e-MERLIN high resolution and sensitivity images of the Triple Radio continuum Source in the Serpens star forming region. These observations allowed us to perf…
Physical conditions in the warped accretion disk of a massive star. 349 GHz ALMA observations of G023.0100.41
A. Sanna, A. Giannetti, M. Bonfand +7
Young massive stars warm up the large amount of gas and dust which condenses in their vicinity, exciting a forest of lines from different molecular species. Their line brightness i…
Zooming into the Collimation Zone in a Massive Protostellar Jet
Carlos Carrasco-González, Alberto Sanna, Adriana Rodríguez-Kamenetzky +5
Protostellar jets have a fundamental role at the earliest evolution of protostars of all masses. In the case of low-mass (<8 Msun) protostars, strong observational evidence exists…
Multi-scale view of star formation in IRAS 21078+5211: From clump fragmentation to disk wind
L. Moscadelli, H. Beuther, A. Ahmadi +23
In the massive star-forming region IRAS 21078+5211, a highly fragmented cluster (0.1~pc in size) of molecular cores is observed, located at the density peak of an elongated (1~pc i…
The SEDIGISM survey: Molecular clouds in the inner Galaxy
A. Duarte-Cabral, D. Colombo, J. S. Urquhart +57
We use the 13CO(2-1) emission from the SEDIGISM high-resolution spectral-line survey of the inner Galaxy, to extract the molecular cloud population with a large dynamic range in sp…
VLBI20-30: a scientific roadmap for the next decade -- The future of the European VLBI Network
Tiziana Venturi, Zsolt Paragi, Michael Lindqvist +77
This white paper describes the science case for Very Long Baseline Interferometry (VLBI) and provides suggestions towards upgrade paths for the European VLBI Network (EVN). The EVN…
The nature of the methanol maser ring G23.65700.127. II. Expansion of the maser structure
Anna Bartkiewicz, Alberto Sanna, Marian Szymczak +3
Ring-like distributions of the 6.7 GHz methanol maser spots at milliarcsecond scales represent a family of molecular structures of unknown origin associated with high-mass young st…
Protostellar Outflows at the EarliesT Stages (POETS). IV. Statistical properties of the 22 GHz H2O masers
Luca Moscadelli, Alberto Sanna, Ciriaco Goddi +3
We wish to perform a statistical study of the location and motion of individual 22 GHz water maser cloudlets, characterized by sizes that are within a few au, with respect to the r…
Trigonometric Parallaxes Of High-Mass Star Forming Regions: Our View Of The Milky Way
M. J. Reid, K. M. Menten, A. Brunthaler +15
We compile and analyze ~200 trigonometric parallaxes and proper motions of molecular masers associated with very young high-mass stars. These measurements strongly suggest that the…
Protostellar Outflows at the EarliesT Stages (POETS). III. H2O masers tracing disk-winds and jets near luminous YSOs
Luca Moscadelli, Alberto Sanna, Ciriaco Goddi +3
The goal of the Protostellar Outflows at the EarliesT Stages (POETS) survey is to image the disk-outflow interface on scales of 10-100 au in a statistically significant sample (36)…
Measuring the ionisation fraction in a jet from a massive protostar
R. Fedriani, A. Caratti o Garatti, S. J. D. Purser +7
It is important to determine if massive stars form via disc accretion, like their low-mass counterparts. Theory and observation indicate that protostellar jets are a natural conseq…
Sub-arcsecond (sub)millimeter imaging of the massive protocluster G358.93-0.03: Discovery of 14 new methanol maser lines associated with a hot core
C. L. Brogan, T. R. Hunter, A. P. M. Towner +25
We present (sub)millimeter imaging at 0.5'' resolution of the massive star-forming region G358.93-0.03 acquired in multiple epochs at 2 and 3 months following the recent flaring of…
Understanding Accretion Outbursts in Massive Protostars through Maser Imaging
Todd R. Hunter, Anna Bartkiewicz, Walter Brisken +8
The bright maser emission produced by several molecular species at centimeter to long millimeter wavelengths provides an essential tool for understanding the process of massive sta…