BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:The Global Millimetre VLBI Array: Current Capabilities and Future Enhancements DTSTART;VALUE=DATE-TIME:20240906T070000Z DTEND;VALUE=DATE-TIME:20240906T073000Z DTSTAMP;VALUE=DATE-TIME:20260306T143749Z UID:indico-contribution-17-0-60@cern.ch DESCRIPTION:Speakers: Prof. ROS\, Eduardo (MPI für Radioastronomie)\nThe Global Millimetre VLBI Array (GMVA) represents the most extensive array fo r high-resolution observations at 3.5 mm wavelengths. The mm-VLBI techniqu e has reached a state of maturity and is now delivering cutting-edge resul ts (e.g.\, the combined image of the black hole shadow and the jet in Mess ier 87 published by Lu et al. in April 2023). A leap forward is planned w ith upcoming advancements\, including multi-band receivers which will allo w the frequency-phase transfer technique to be used\, mitigating atmospher ic phase fluctuations and improving image fidelity by one order of magnitu de in terms of signal-to-noise ratio in the observations. A new generation of digital baseband converters yields a big increase the data bit rate\, allowing for more efficient data processing and higher quality observation s. Furthermore\, the expansion of the network with new telescopes\, such a s the phased ALMA and the forthcoming APEX\, is continuously enhancing the Fourier sampling and therefore the resulting image fidelity. These techno logical advancements and network expansions will significantly boost the G MVA's observational power\, paving the way for new discoveries in millimet re-wave astronomy over the next years\, connecting the European VLBI Netwo rk and global cm-wavelength down to 7mm with the Event Horizon Telescope o bservations at shorter wavelengths.\n\nhttps://events.mpifr-bonn.mpg.de/in dico/event/371/session/17/contribution/60 LOCATION:CJD Bonn Castell URL:https://events.mpifr-bonn.mpg.de/indico/event/371/session/17/contribut ion/60 END:VEVENT BEGIN:VEVENT SUMMARY:Enhancing VLBI capabilities: recent achievements and future upgrad es of the INAF radio telescopes DTSTART;VALUE=DATE-TIME:20240906T073000Z DTEND;VALUE=DATE-TIME:20240906T074500Z DTSTAMP;VALUE=DATE-TIME:20260306T143749Z UID:indico-contribution-17-0-100@cern.ch DESCRIPTION:Speakers: Dr. GIROLETTI\, Marcello (INAF Istituto di Radioastr onomia)\nSmall and flexible VLBI arrays\, as exemplified by the successful EVN-lite operational model\, can produce significant scientific outcomes. INAF\, the Italian National Institute of Astrophysics\, operates such an interferometer\, comprising three dishes with a total collecting area equi valent to an 80m radio telescope and baselines up to 950 km\, supported by a software correlator in Bologna. This facility can serve as a complement ary resource to the full-size EVN. I will present recent observational res ults in the areas of active galactic nuclei and astrophysical transients\, showcasing the current capabilities. Additionally\, I will discuss ongoin g upgrades\, including the installation of compact triple-band receivers f or millimeter-wave observations and plans for broadband receivers. I will highlight the potential for multi-wavelength and multi-messenger studies\ , and especially the possible synergies with neutrino and gravitational wa ve detectors.\n\nhttps://events.mpifr-bonn.mpg.de/indico/event/371/session /17/contribution/100 LOCATION:CJD Bonn Castell URL:https://events.mpifr-bonn.mpg.de/indico/event/371/session/17/contribut ion/100 END:VEVENT BEGIN:VEVENT SUMMARY:LEVERAGE - Concept for a long-baseline extension in next-generatio n VLBI experiments and rapid-response array DTSTART;VALUE=DATE-TIME:20240906T074500Z DTEND;VALUE=DATE-TIME:20240906T080000Z DTSTAMP;VALUE=DATE-TIME:20260306T143749Z UID:indico-contribution-17-0-96@cern.ch DESCRIPTION:Speakers: Prof. KADLER\, Matthias (Universitaet Wuerzburg)\nTh e next decades of radio astronomy will be dominated by large facilities of superior sensitivity. Between 1GHz and 15GHz\, strong synergies can be de veloped between the next-generation Very Large Array (ngVLA) and the Squar e Kilometre Array (SKA)\, specifically the SKA-mid. Towards higher frequen cies\, the ngVLA will be able to co-observe with other frontline facilitie s including the EVN (at 1-43 GHz)\, and the GMVA (at 43-86 GHz). \nIn this talk\, we will discuss the possibility of enhancing these synergies with an array of mid-to-high frequency radio antennas in Germany to be operated as a stand-alone facility\, as well as a complement to the ngVLA\, SKA-m id\, EVN\, and GMVA in VLBI and studies of transients. LEVERAGE is a conce pt for an array of two to four radio-antenna stations operating in the mid -to-high frequency range (up to 120GHz) with baselines between 500km and 1 000km\, which will significantly enhance the science capabilities of both the SKA and ngVLA in terms of submilliarcsecond-scale image reconstruction and flexibility in reacting to short transient events. Moreover\, the LEV ERAGE concept offers high efficiency as a stand-alone instrument and can b e optimized to localize and follow-up radio transients with a faster react ion time than the larger next-generation facilities. The facility may supp ort special modes that are difficult to realize on the full large next-gen eration facilities or are going beyond their scope such as long uninterrup ted integrations\, high-cadence observations\, long-term monitoring or bro ader simultaneous frequency coverage.\n\nhttps://events.mpifr-bonn.mpg.de/ indico/event/371/session/17/contribution/96 LOCATION:CJD Bonn Castell URL:https://events.mpifr-bonn.mpg.de/indico/event/371/session/17/contribut ion/96 END:VEVENT BEGIN:VEVENT SUMMARY:TNRO: A Beacon for Southeast Asia's VLBI Advancement and Role in G lobal VLBI Networks DTSTART;VALUE=DATE-TIME:20240906T080000Z DTEND;VALUE=DATE-TIME:20240906T081500Z DTSTAMP;VALUE=DATE-TIME:20260306T143749Z UID:indico-contribution-17-0-22@cern.ch DESCRIPTION:Speakers: Dr. SUGIYAMA\, Koichiro (National Astronomical Resea rch Institute of Thailand (Public Organization))\nIn 2017\, the National A stronomical Research Institute of Thailand (NARIT) launched a national fla gship project with the empyreal goal of capacity building and technology d evelopment through the construction of national radio telescopes for radio astronomy and geodesy. To achieve this\, NARIT has established the Thai N ational Radio Astronomy Observatory (TNRO)\, in Chiangmai\, the northern p art of Thailand. At this observatory\, two radio telescopes have been cons tructed: one is a 40-m Thai National Radio Telescope (TNRT) in collaborati on with Yebes Observatory\, Max Planck Institute for Radio Astronomy\, and Jodrell Bank Centre for Astrophysics\, and another one is a 13- m VGOS ra dio telescope as its co-location in collaboration with Shanghai Astronomic al Observatory. The 40-m TNRT is the largest telescope for radio astronomy in Southeast Asia\, offering flexible operation across a wide frequency r ange of 0.3-115 GHz. This capability enables significant contributions to time-domain astronomy and allows for comprehensive surveys across various scientific research fields\, as outlined in a recently published white pap er. Collaborating with VLBI arrays in the world\, such as the European VLB I Network (EVN)\, the TNRT will drastically enhance the imaging quality an d performance due to its unique geographical location. This advancement ma rks a significant step for both radio astronomy and geodetic VLBI studies. \n\nIn this presentation\, we will review the progress of TNRO\, includin g the Call for Proposals initiated in October 2023\, and the preparations for VLBI observations\, highlighted by the first fringe detection in the L -band. Additionally\, we will discuss the future expansion of TNRO through the construction of additional VGOS stations and the vision for establish ing forthcoming regional VLBI networks based on TNRT. This includes the Th ai National VLBI Array and Southeast Asia VLBI Network\, in collaboration with Indonesia\, Malaysia\, and Vietnam.\n\nhttps://events.mpifr-bonn.mpg. de/indico/event/371/session/17/contribution/22 LOCATION:CJD Bonn Castell URL:https://events.mpifr-bonn.mpg.de/indico/event/371/session/17/contribut ion/22 END:VEVENT BEGIN:VEVENT SUMMARY:Commissioning of the BRAND receiver at Effelsberg DTSTART;VALUE=DATE-TIME:20240906T081500Z DTEND;VALUE=DATE-TIME:20240906T083000Z DTSTAMP;VALUE=DATE-TIME:20260306T143749Z UID:indico-contribution-17-0-7@cern.ch DESCRIPTION:Speakers: Mrs. RAHIMI\, Parisa (MPI für Radioastronomie)\nThe BRAND receiver is a new system mainly intended for the EVN that covers th e remarkably broad contiguous frequency range of 1.5 GHz to 15.5 GHz. It i ncludes all required components of the entire signal path from the cryogen ic frontend\, feed\, amplifiers\, hybrids\, the 56 Gsps sampler up to the VLBI backend and is intended for VLBI and single-dish work. This band cove rage offers flexibility for redshifted spectral lines\, sensitivity and fr equency agility in the EVN.\n\nIn this talk I will present work recently c arried out as part of my master thesis to integrate the BRAND components i nto a prototype system to be installed in the Effelsberg 100-m telescope\, which continues the development from the RadioNet BRAND-EVN project. The Effelsberg prototype will enable - for the first time - on-sky measurement s with a new generation of very broad-band receivers. This will allow to a ssess the real-world performance in various scenarios\, e.g. astronomical as well as geodetic VLBI and single-dish applications and should help info rm the decision-making about future EVN capabilities.\nThe work presented is based on technical tests on the cryogenic-\, IF-\, and data-acquisition system in Bonn and Effelsberg. On-sky tests include single dish spectrosc opy\, pulsar observations\, and VLBI and I will present results as availab le.\n\nhttps://events.mpifr-bonn.mpg.de/indico/event/371/session/17/contri bution/7 LOCATION:CJD Bonn Castell URL:https://events.mpifr-bonn.mpg.de/indico/event/371/session/17/contribut ion/7 END:VEVENT BEGIN:VEVENT SUMMARY:First Closing Address DTSTART;VALUE=DATE-TIME:20240906T083000Z DTEND;VALUE=DATE-TIME:20240906T084500Z DTSTAMP;VALUE=DATE-TIME:20260306T143749Z UID:indico-contribution-17-0-141@cern.ch DESCRIPTION:Speakers: ZENSUS\, Anton ()\nhttps://events.mpifr-bonn.mpg.de/ indico/event/371/session/17/contribution/141 LOCATION:CJD Bonn Castell URL:https://events.mpifr-bonn.mpg.de/indico/event/371/session/17/contribut ion/141 END:VEVENT END:VCALENDAR