Publications (24)
Study of solar brightness profiles in the 18-26 GHz frequency range with INAF radio telescopes II. Evidence for coronal emission
M. Marongiu, A. Pellizzoni, S. Righini +43
One of the most important objectives of solar physics is the physical understanding of the solar atmosphere, the structure of which is also described in terms of the density (N) an…
Variable Scintillation Arcs of Millisecond Pulsars observed with the Large European Array for Pulsars
R. A. Main, J. Antoniadis, S. Chen +26
We present the first large sample of scintillation arcs in millisecond pulsars, analysing 12 sources observed with the Large European Array for Pulsars (LEAP), and the Effelsberg 1…
Data Reduction of Multi-wavelength Observations
M. Pilia, A. Trois, A. P. Pellizzoni +9
Multi-messenger astronomy is becoming the key to understanding the Universe from a comprehensive perspective. In most cases, the data and the technology are already in place, there…
Methods for detection and analysis of weak radio sources with single-dish radio telescopes
M. Marongiu, A. Pellizzoni, E. Egron +13
The detection of mJy/sub-mJy point sources is a significant challenge for single-dish radio telescopes. Detection or upper limits on the faint afterglow from GRBs or other sources…
Study of solar brightness profiles in the 18-26 GHz frequency range with INAF radio telescopes I: solar radius
M. Marongiu, A. Pellizzoni, S. Mulas +32
The Sun is an extraordinary workbench, from which several fundamental astronomical parameters can be measured with high precision. Among these parameters, the solar radius $R_{\odo…
Solar observations with single-dish INAF radio telescopes: continuum imaging in the 18-26 GHz range
A. Pellizzoni, S. Righini, M. N. Iacolina +28
We present a new solar radio imaging system implemented through the upgrade of the large single-dish telescopes of the Italian National Institute for Astrophysics (INAF), not origi…
Pulsar observations with European telescopes for testing gravity and detecting gravitational waves
D. Perrodin, C. G. Bassa, G. H. Janssen +20
A background of nanohertz gravitational waves from supermassive black hole binaries could soon be detected by pulsar timing arrays, which measure the times-of-arrival of radio puls…
New high-frequency radio observations of the Cygnus Loop supernova remnant with the Italian radio telescopes
S. Loru, A. Pellizzoni, E. Egron +19
Supernova remnants (SNRs) represent a powerful laboratory to study the Cosmic-Ray acceleration processes at the shocks, and their relation to the properties of the circumstellar me…
The Sardinia Radio Telescope: From a Technological Project to a Radio Observatory
I. Prandoni, M. Murgia, A. Tarchi +43
[Abridged] The Sardinia Radio Telescope (SRT) is the new 64-m dish operated by INAF (Italy). Its active surface will allow us to observe at frequencies of up to 116 GHz. At the mom…
Sardinia Radio Telescope observations of the Coma Cluster
M. Murgia, F. Govoni, V. Vacca +25
We present deep total intensity and polarization observations of the Coma cluster at 1.4 and 6.6 GHz performed with the Sardinia Radio Telescope. By combining the single-dish 1.4 G…
Strong evidence of Anomalous Microwave Emission from the flux density spectrum of M31
E. S. Battistelli, S. Fatigoni, M. Murgia +21
We have observed the Andromeda galaxy, Messier 31 (M31), at 6.7GHz with the Sardinia Radio Telescope. We mapped the radio emission in the C-band, re-analyzed WMAP and Planck maps,…
Sardinia Radio Telescope wide-band spectral-polarimetric observations of the galaxy cluster 3C 129
M. Murgia, F. Govoni, E. Carretti +27
We present new observations of the galaxy cluster 3C 129 obtained with the Sardinia Radio Telescope in the frequency range 6000-7200 MHz, with the aim to image the large-angular-sc…
Study of the thermal and nonthermal emission components in M31: the Sardinia Radio Telescope view at 6.6 GHz
S. Fatigoni, F. Radiconi, E. S. Battistelli +21
The Andromeda galaxy is the best-known large galaxy besides our own Milky Way. Several images and studies exist at all wavelengths from radio to hard X-ray. Nevertheless, only a fe…
Modelling annual scintillation arc variations in PSR J1643-1224 using the Large European Array for Pulsars
G. Mall, R. A. Main, J. Antoniadis +25
In this work we study variations in the parabolic scintillation arcs of the binary millisecond pulsar PSR J1643-1224 over five years using the Large European Array for Pulsars (LEA…
Observations of a nearby filament of galaxy clusters with the Sardinia Radio Telescope
V. Vacca, M. Murgia, F. Govoni +29
We report the detection of diffuse radio emission which might be connected to a large-scale filament of the cosmic web covering a 8deg x 8deg area in the sky, likely associated wit…
Sardinia Radio Telescope observations of Local Group dwarf galaxies -- I. The cases of NGC6822, IC1613, and WLM
A. Tarchi, P. Castangia, G. Surcis +10
Almost all dwarf galaxies in the Local Group that are not satellites of the Milky Way or M31, belong to either one of two highly-symmetric planes. It is still a matter of debate, w…
Observations of the galaxy cluster CIZA J2242.8+5301 with the Sardinia Radio Telescope
F. Loi, M. Murgia, F. Govoni +25
We observed the galaxy cluster CIZA J2242.8+5301 with the Sardinia Radio Telescope to provide new constraints on its spectral properties at high frequency. We conducted observation…
Sardinia Radio Telescope observations of Abell 194 - the intra-cluster magnetic field power spectrum
F. Govoni, M. Murgia, V. Vacca +30
We study the intra-cluster magnetic field in the poor galaxy cluster Abell 194 by complementing radio data, at different frequencies, with data in the optical and X-ray bands. We a…
Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars
K. Liu, J. Antoniadis, C. G. Bassa +24
We report on the detection of quasi-periodic micro-structure in three millisecond pulsars (MSPs), PSRs J1022+1001, J2145-0750 and J1744-1134, using high time resolution data acquir…
Investigating the high-frequency spectral features of SNRs Tycho, W44 and IC443 with the Sardinia Radio Telescope
S. Loru, A. Pellizzoni, E. Egron +20
The main characteristics in the radio continuum spectra of Supernova Remnants (SNRs) result from simple synchrotron emission. In addition, electron acceleration mechanisms can shap…
Single-dish and VLBI observations of Cygnus X-3 during the 2016 giant flare episode
E. Egron, A. Pellizzoni, M. Giroletti +34
In September 2016, the microquasar Cygnus X-3 underwent a giant radio flare, which was monitored for 6 days with the Medicina Radio Astronomical Station and the Sardinia Radio Tele…
Imaging of SNR IC443 and W44 with the Sardinia Radio Telescope at 1.5 GHz and 7 GHz
E. Egron, A. Pellizzoni, M. N. Iacolina +33
Observations of supernova remnants (SNRs) are a powerful tool for investigating the later stages of stellar evolution, the properties of the ambient interstellar medium, and the ph…
Duty cycle of the radio galaxy B2 0258+35
M. Brienza, R. Morganti, M. Murgia +14
Radio loud Active Galactic Nuclei are episodic in nature, cycling through periods of activity and quiescence. In this work we investigate the duty cycle of the radio galaxy B2~0258…
Observations of Supernova Remnants with the Sardinia Radio Telescope
E. Egron, A. Pellizzoni, S. Loru +11
In the frame of the Astronomical Validation activities for the 64m Sardinia Radio Telescope, we performed 5-22 GHz imaging observations of the complex-morphology supernova remnants…