-
28/10/2025, 09:00
-
Andrei Lobanov28/10/2025, 09:10
-
Eduardo Ros (MPI für Radioastronomie)28/10/2025, 09:40
-
Dr Kazi Rygl (Istituto Nazionale di Astrofisica (INAF))28/10/2025, 10:00Contributed Talk
-
Hyunwook Ro (Korea Astronomy and Space Science Institute)28/10/2025, 10:20Contributed Talk
-
Prof. Yoshiaki Hagiwara (Toyo University)28/10/2025, 11:10Contributed Talk
-
Cristiana Spingola (INAF - Istituto di Radioastronomia)28/10/2025, 11:30Contributed Talk
-
Luca Moscadelli (Istituto Nazionale di Astrofisica (INAF))28/10/2025, 11:50Contributed Talk
-
Paloma Thevenet (Observatoire de Paris - PSL)28/10/2025, 12:10Contributed Talk
-
Helge Rottmann28/10/2025, 14:00
-
Pietro Bolli (Istituto Nazionale di Astrofisica (INAF))28/10/2025, 14:30Invited Talk
-
Taehyun Jung28/10/2025, 14:55Invited Talk
-
Wu Jiang (Shanghai Astronomical Observatory, CAS)28/10/2025, 15:20
-
Pablo de Vicente (Observatorio de Yebes - IGN)28/10/2025, 16:05Invited Talk
-
Guang-Yao Zhao (MPI für Radioastronomie)28/10/2025, 16:20Invited Talk
-
Michael Lindqvist (Chalmers)28/10/2025, 16:35Invited Talk
-
Tuomas Savolainen (Metsähovi Radio Observatory)28/10/2025, 16:50
-
Weiye Zhong (Shanghai Astronomical Observatory, CAS)28/10/2025, 17:05Contributed Talk
-
Michael Johnston29/10/2025, 09:00Contributed Talk
The South African Radio Astronomy Observatory (SARAO) is a national facility that is responsible for radio astronomy research and infrastructure development in South Africa. It manages key projects such as the MeerKAT telescope which is a precursor to the Square Kilometre Array (SKA)-mid telescope. The Receivers Team at SARAO is primarily responsible for the production of Digitsers units for...
Go to contribution page -
James Chibueze (University of South Africa)29/10/2025, 09:05Contributed Talk
-
Bannawit Pimpanuwat (National Astronomical Research Institute of Thailand)29/10/2025, 09:25Contributed Talk
-
Jacopo Nanni (Università di Bologna, associato Istituto Nazionale di Astrofisica (INAF))29/10/2025, 09:45Contributed Talk
-
Mareki Honma29/10/2025, 10:05Invited Talk
In this presentation I will review current status of receivers at VLBI stations in Japan, including the frequency bands, bandwidths, and potential for multi-frequency receiving capability. I will focus primarily on VLBI facilities operated by the National Astronomical Observatory of Japan (NAOJ), such as the VERA network and the Nobeyama 45m radio telescope, while also briefly introducing the...
Go to contribution page -
Hiroshi Imai (Kagoshima University)29/10/2025, 10:30Invited Talk
-
29/10/2025, 11:10
Chairs: M. Rioja, B. W. Sohn
Go to contribution page -
Michele Doro (University of Padova)29/10/2025, 14:00Invited Talk
-
Alberto Colombo (Istituto Nazionale di Astrofisica (INAF))29/10/2025, 14:25Invited Talk
-
Giulia Illuminati (INFN Bologna)29/10/2025, 14:50Invited Talk
-
Richard Dodson (ICRAR)29/10/2025, 15:15Invited Talk
-
Hyeon-Woo Jeong (University of Science and Technology, Korea (UST) / Korea Astronomy and Space Science Institute, Korea (KASI))29/10/2025, 16:00Contributed Talk
-
Dr Sanghyun Kim (Korea Astronomy and Space Science Institute (KASI))29/10/2025, 16:20Contributed Talk
-
Shan-Shan Zhao (Shanghai Astronomical Observatory)29/10/2025, 16:40Contributed Talk
-
Xi Yan (Xinjiang Astronomical Observatory(XAO), CAS)29/10/2025, 17:00Contributed Talk
In this report, we present our recent study of the acceleration and collimation of the two-sided jets in the nearby low-luminosity AGN NGC 4261. We robustly identify a parabolic-to-conical structural transition in both the jet and counterjet, with the transition occurring on (sub)parsec scales. Based on the jet-to-counterjet brightness, we derive the jet velocity field at distances of ∼ (10^3...
Go to contribution page -
Xiaopeng Cheng (Korea Astronomy and Space Science Institute)29/10/2025, 17:20
-
Sergio Poppi (Istituto Nazionale di Astrofisica (INAF))30/10/2025, 09:00Contributed Talk
-
Andrea Orlati (Istituto Nazionale di Astrofisica (INAF))30/10/2025, 09:25Contributed Talk
-
30/10/2025, 09:50
Chairs: F. Govoni, C. Trigilio
Go to contribution page -
Satoko Sawada-Satoh (Osaka Metropolitan University)30/10/2025, 11:00Contributed Talk
-
30/10/2025, 11:20
Chairs: A. Lobanov, T. Venturi, R. Lico
Go to contribution page -
30/10/2025, 14:10
chairs: J. Conway, E. Ros
Go to contribution page -
Xi Yan (Xinjiang Astronomical Observatory(XAO), CAS)Contributed Talk
In this report, we present our recent study of the acceleration and collimation of the two-sided jets in the nearby low-luminosity AGN NGC 4261. We robustly identify a parabolic-to-conical structural transition in both the jet and counterjet, with the transition occurring on (sub)parsec scales. Based on the jet-to-counterjet brightness, we derive the jet velocity field at distances of ∼ (10^3...
Go to contribution page -
Cristiana Spingola (INAF - Istituto di Radioastronomia)Contributed Talk
Gravitational lensing is one of the most powerful tools to investigate the dark Universe (dark energy via gravitational time delays and dark matter (via low mass lenses). Nevertheless, these fundamental cosmological studies are limited by the paucity of lensing systems known to date. Finding novel and effective ways to identify strong lenses represent, therefore, a new challenge that has to be...
Go to contribution page -
Guang-Yao Zhao (MPI für Radioastronomie)Invited Talk
In this talk, we will briefly introduce recent FPT/SFPR-related activities with the M2FINDERS project, which aims at mapping the magnetic field at the event horizon scale of SMBHs.
Go to contribution page
First, a recent single-baseline test between APEX and IRAM 30-m RT has successfully demonstrated the FPT method up to 258 GHz, which extends the 258 GHz coherence time from 10 seconds to ~ 1 minute (90% coherence... -
Prof. Hiroshi Imai (Kagoshima University)Invited Talk
This talk summarizes our progress of our HINOTORI (Hybrid Integration Project in Nobeyama, Triple-band Oriented) since 2016, which now enables us to simultaneously observe in 22/43/86-GHz bands in single-dish mode. The HINOTORI system just employs combination of perforated frequency-band selection filter plates installed in the quasi-optics of the Nobeyama 45 m radio telescope with the...
Go to contribution page -
Bannawit Pimpanuwat (National Astronomical Research Institute of Thailand)Contributed Talk
The Thai National Radio Astronomy Observatory (TNRO), established in Chiang Mai in 2017 by the National Astronomical Research Institute of Thailand (NARIT, Public Organization), advances radio astronomy and geodesy infrastructure in Thailand. Its centerpiece, the 40-meter Thai National Radio Telescope (TNRT) that is designed as an enhanced version of the 40-meter Yebes Radio Telescope,...
Go to contribution page -
Luca Moscadelli (Istituto Nazionale di Astrofisica (INAF))Contributed Talk
The launching mechanism of jets remains one of the fundamental challenges in astrophysics. We are presently carrying on a campaign of 22 GHz water maser VLBI observations to prove on a robust statistical ground that magnetohydrodynamic disk winds represent the common launching mechanism of protostellar jets. Several methanol maser transitions can provide complementary information to the 22 GHz...
Go to contribution page -
Prof. Eduardo Ros (MPI für Radioastronomie)Contributed Talk
The Global Millimetre VLBI Array (GMVA) is a high-sensitivity global millimetre VLBI instrument that operates at wavelengths of 3 mm and 7 mm. Recent enhancements, such as the inclusion of phased ALMA and the upgrade of the NOEMA observatory, have significantly improved the array’s sensitivity and imaging capabilities. The GMVA now plays a central role in enabling high-resolution studies of...
Go to contribution page -
Wu Jiang (Shanghai Astronomical Observatory, CAS)Invited Talk
Simultaneous multi-band receiving system enables the detection of weak targets with mm-VLBI through the frequency phase transfer (FPT) or source-frequency phase-referencing (SFPR) technique. This provides great advantages both for imaging and astrometry. In this talk, I will report some observations with SFPR on weak targets including supermassive black holes and binaries. We successfully...
Go to contribution page -
James Chibueze (University of South Africa)Contributed Talk
The African Millimeter Telescope (AMT) is now poised to become a reality in less than half-a-decade. In anticipation of the arrival of the AMT, a number of simulations have been carried out to explore the possible improvement in UV-coverage of various VLBI networks and the Event Horizon Project. In this talk, I will present some of the results of the simulations to show the significant impact...
Go to contribution page -
Xiaopeng Cheng (Korea Astronomy and Space Science Institute)Poster
We present new VLBI results on PKS 1540−077, a GHz-Peaked Spectrum (GPS) source and a strong candidate for a parsec-scale dual supermassive black hole (SMBH) system. Previous VLBA observations at 5 and 8 GHz revealed two compact, flat-spectrum components separated by ~130 pc, with no significant relative motion, inconsistent with typical jet dynamics. Our recent 22 GHz EAVN observation...
Go to contribution page -
Tuomas Savolainen (Metsähovi Radio Observatory)Invited Talk
Abstract: As a part of a major infrastructure upgrade, Aalto
Go to contribution page
University Metsähovi Radio Observatory will renew the receivers and
data acquisition systems of its 14-metre radio telescope. A key part
of this upgrade is a new ultra-wide-bandwidth triple-band receiver
that is able to simultaneously observe at 18-26, 34-50 and 80-116
GHz. The dual-beam, gain-stabilized receiver will have more... -
Andrea Orlati (Istituto Nazionale di Astrofisica (INAF))Invited Talk
The K-Q-W band receiver, a crucial component for advanced radio astronomy observations, was successfully delivered at the end of 2022. This acquisition was made possible through funding from the Ministry of Research, as part of the PON "Innovation 20-24" program. Upon the definition of the receiver's operational requirements (first stages of PON project), a comprehensive plan was initiated to...
Go to contribution page -
Hyeon-Woo Jeong (University of Science and Technology, Korea (UST) / Korea Astronomy and Space Science Institute, Korea (KASI))Contributed Talk
Very long baseline interferometry (VLBI) observations provide high sensitivity and high resolution, allowing us to resolve relativistic jets from active galactic nuclei (AGNs) into several knot-like features. In addition, spectral analysis of such resolved plasma populations can be performed when combined with (quasi-)simultaneous multi-frequency observations. In particular, high-frequency...
Go to contribution page -
Shan-Shan Zhao (Shanghai Astronomical Observatory)Contributed Talk
Direct detection of supermassive black hole binaries (SMBHBs)—via resolved imaging of dual sources and precise orbital tracking—demands extreme astrometric precision (~1 μas/yr). Linking SMBHB evolution (from ≲10 kpc dynamical friction to ≲0.01 pc gravitational-wave stages) with observational capabilities, we estimate detectability: For AGNs with 5% SMBHB occurrence, a 86 GHz VLBI system...
Go to contribution page -
Dr Sanghyun Kim (Korea Astronomy and Space Science Institute (KASI))Contributed Talk
The discovery of high-energy TeV/PeV neutrinos (HENs) by the IceCube Neutrino Observatory has motivated extensive efforts to identify their astrophysical origins. Blazars, a subclass of active galactic nuclei with relativistic jets aimed toward Earth, have emerged as promising HEN candidates, especially after the association of a HEN event with the blazar TXS 0506+056. However, the origin of...
Go to contribution page -
Giulia Illuminati (INFN Bologna)Invited Talk
Thanks to their ability to escape dense astrophysical environments and their straight-line propagation over cosmological distances, neutrinos provide a unique probe of the high-energy Universe. Neutrino astronomy, initiated by pioneering experiments such as ANTARES and IceCube, is now evolving rapidly, with a new generation of detectors coming into play.
Go to contribution page
Among these, KM3NeT is expected to... -
Yoshiaki Hagiwara (Toyo University)Contributed Talk
This study explores the scientific motivation and feasibility of observing water megamasers at 183 GHz using VLBI techniques. To date, more than a dozen extragalactic 183 GHz megamasers have been detected, with a high detection rate achieved through ALMA observations targeting known 22 GHz megamaser sources. Compared to the 22 GHz masers,
Go to contribution page
183 GHz millimeter-wave megamasers suffer less... -
Maria Rioja (ICRAR), Richard Dodson (ICRAR)Invited Talk
Astrometry at the very highest of frequencies is an unexplored frontier for VLBI observations. Astrometry is equally vital to connect observations at different times and different frequencies. The former is used for measuring proper motions and parallaxes to derive distances to the targets - and thus their physical characteristics.
Go to contribution page
The latter is to reference two images at different... -
Jacopo Nanni (Università di Bologna, associato Istituto Nazionale di Astrofisica (INAF))Contributed Talk
With the recent and ongoing upgrades of the VLBI INAF antennas of Medicina (Bologna) and Noto (Siracusa), together with the implementation of the Compact Tri-band Korean Receivers, all the Italian facilities, including the Sardinia Radio Telescope (SRT), are ready for performing millimeter-wave observations up to W-band (about 110 GHz). Because of the receiver bands available, around 18 GHz,...
Go to contribution page -
Satoko Sawada-Satoh (Osaka Metropolitan University)Contributed Talk
We present the sub-pc scale molecular absorption studies in the circumnuclear region of the radio galaxy NGC 1052. Utilizing the KVN multi-frequency receiving system and the FPT technique, our KVN observations at mm bands spatially have resolved the molecular absorptions against a two-sided nuclear structure. The absorbing molecular clouds are concentrated on the receding jet and the nuclear...
Go to contribution page -
Dr Weiye Zhong (Shanghai Astronomical Observatory, CAS)Contributed Talk
The Tianma Telescope is currently developing a K/Q/W triple-band cryogenic receiver. The entire system comprises a microwave quasi-optical system, a cryogenic electronics unit, a warm frequency conversion unit, and a power & control unit. The microwave quasi-optical system is being developed in collaboration with Osaka Metropolitan University (OMU) in Japan. OMU is responsible for the...
Go to contribution page -
Paloma Thevenet (KASI, Observatoire de Paris - PSL)Contributed Talk
The blazar 3C 66A is known for its optical flux periodicity and complex jet kinematics. Using 22/43 GHz KaVa (KVN and VERA array) observations and 43 GHz VLBA (Very Long Baseline Array) archival data, we have found that its pc-scale jet has a twisted structure and that the inner jet undergoes periodic swings every 13 years. In this talk, we will describe the peculiar characteristics of 3C 66A...
Go to contribution page -
Pablo de Vicente (Observatorio de Yebes - IGN)Invited Talk
The Yebes Observatory, operated by the National Geographic Institute of Spain (IGN), hosts a state-of-the-art 40-meter radio telescope equipped with a broad range of frequency receivers from S-band to W-band (2–90 GHz), all designed and mostly built in-house. All of them can be used in single-dish and VLBI observations. The ultra-wide K-, Q-, and W-band frontends are mounted on a single...
Go to contribution page -
Hyunwook Ro (Korea Astronomy and Space Science Institute)Contributed Talk
We present results from long-baseline VLBI test observations evaluating the performance of Frequency Phase Transfer (FPT) and Source/Frequency Phase Referencing (SFPR) at 22, 43, and 86 GHz using the Korean VLBI Network (KVN) and the Yebes-40m telescope in Spain (~9,000 km baseline). The ultimate goal is to monitor the orbital motion of supermassive black hole binaries (SMBHBs) using...
Go to contribution page -
Dr Kazi Rygl (Istituto Nazionale di Astrofisica (INAF))Contributed Talk
The new K/Q/W tri-band receivers cover a number of important maser transitions
Go to contribution page
of methanol, water, SiO and other molecules. Many of these transitions are
excited in the vicinity of massive young stellar objects (MYSOs). Different
molecules and transitions have different excitation mechanisms and may originate
in different parts of the MYSO's environment, such as the circumstellar... -
Michael Lindqvist (Chalmers)Invited Talk
Onsala Space Observatory (OSO), the Swedish National Facility for Radio Astronomy, operates a 20 m-diameter millimetre-wave telescope a 25 m-diameter cm-wave telescope two 13.2 m-diameter VGOS antennas as well as a LOFAR station at Onsala. Furthermore, OSO is involved in several international projects such as European VLBI Network (EVN), International VLBI Service (IVS) for Geodesy and...
Go to contribution page -
Pietro Bolli (Istituto Nazionale di Astrofisica (INAF))Invited Talk
In this presentation, the status of the tri-band receivers acquired, within the PON-SRT program, for the SRT, Medicina and Noto radio telescopes will be shown. Then, I will proceed with a description on the laboratory tests, integration into radio telescopes and first light.
Go to contribution page
Choose timezone
Your profile timezone: