Performance and first measurements of the MAGIC stellar intensity interferometer
Abe, S.; Abhir, J.; Acciari, V. A.; Aguasca-Cabot, A.; Agudo, I.; Aniello, T.; Ansoldi, S.; Antonelli, L. A.; Arbet Engels, A.; Arcaro, C.; Artero, M.; Asano, K.; Babić, A.; Baquero, A.; Barres De Almeida, U.; Barrio, J. A.; Batković, I.; Bautista, A.; Baxter, J.; Becerra González, J.; Bernardini, E.; Bernardos, M.; Bernete, J.; Berti, A.; Besenrieder, J.; Bigongiari, C.; Biland, A.; Blanch, O.; Bonnoli, G.; Bošnjak, null; Burelli, I.; Busetto, G.; Campoy-Ordaz, A.; Carosi, A.; Carosi, R.; Carretero-Castrillo, M.; Ceribella, G.; Chai, Y.; Cifuentes, A.; Colombo, E.; Contreras, J. L.; Cortina, J.; Covino, S.; D'Amico, G.; D'Elia, V.; Da Vela, P.; Dazzi, F.; De Angelis, A.; De Lotto, B.; De Menezes, R.; Del Popolo, A.; Delfino, M.; Delgado, J.; Delgado Mendez, C.; Di Pierro, F.; Di Venere, L.; Dominis Prester, D.; Donini, A.; Dorner, D.; Doro, M.; Elsaesser, D.; Emery, G.; Escudero, J.; Fariña, L.; Fattorini, A.; Foffano, L.; Font, L.; Fröse, S.; Fukami, S.; Fukazawa, Y.; García López, R. J.; Garczarczyk, M.; Gasparyan, S.; Gaug, M.; Giesbrecht Pai V A, J. G.; Giglietto, N.; Giordano, F.; Gliwny, P.; Gradetzke, T.; Grau, R.; Green, D.; Green, J. G.; Günther, P.; Hadasch, D.; Hahn, A.; Hassan, T.; Heckmann, L.; Herrera, J.; Hrupec, D.; Hütten, M.; Imazawa, R.; Ishio, K.; Jiménez Martínez, I.; Jormanainen, J.; Kayanoki, T.; Kerszberg, D.; Kluge, G. W.; Kobayashi, Y.; Kouch, P. M.; Kubo, H. (2024-03-11)
S Abe, J Abhir, V A Acciari, A Aguasca-Cabot, I Agudo, T Aniello, S Ansoldi, L A Antonelli, A Arbet Engels, C Arcaro, M Artero, K Asano, A Babić, A Baquero, U Barres de Almeida, J A Barrio, I Batković, A Bautista, J Baxter, J Becerra González, E Bernardini, M Bernardos, J Bernete, A Berti, J Besenrieder, C Bigongiari, A Biland, O Blanch, G Bonnoli, Ž Bošnjak, I Burelli, G Busetto, A Campoy-Ordaz, A Carosi, R Carosi, M Carretero-Castrillo, G Ceribella, Y Chai, A Cifuentes, E Colombo, J L Contreras, J Cortina, S Covino, G D’Amico, V D’Elia, P Da Vela, F Dazzi, A De Angelis, B De Lotto, R de Menezes, A Del Popolo, M Delfino, J Delgado, C Delgado Mendez, F Di Pierro, L Di Venere, D Dominis Prester, A Donini, D Dorner, M Doro, D Elsaesser, G Emery, J Escudero, L Fariña, A Fattorini, L Foffano, L Font, S Fröse, S Fukami, Y Fukazawa, R J García López, M Garczarczyk, S Gasparyan, M Gaug, J G Giesbrecht Paiva, N Giglietto, F Giordano, P Gliwny, T Gradetzke, R Grau, D Green, J G Green, P Günther, D Hadasch, A Hahn, T Hassan, L Heckmann, J Herrera, D Hrupec, M Hütten, R Imazawa, K Ishio, I Jiménez Martínez, J Jormanainen, T Kayanoki, D Kerszberg, G W Kluge, Y Kobayashi, P M Kouch, H Kubo, J Kushida, M Láinez, A Lamastra, F Leone, E Lindfors, L Linhoff, S Lombardi, F Longo, R López-Coto, M López-Moya, A López-Oramas, S Loporchio, A Lorini, E Lyard, B Machado de Oliveira Fraga, P Majumdar, M Makariev, G Maneva, N Mang, M Manganaro, S Mangano, K Mannheim, M Mariotti, M Martínez, M Martínez-Chicharro, A Mas-Aguilar, D Mazin, S Menchiari, S Mender, D Miceli, T Miener, J M Miranda, R Mirzoyan, M Molero González, E Molina, H A Mondal, A Moralejo, D Morcuende, T Nakamori, C Nanci, V Neustroev, L Nickel, M Nievas Rosillo, C Nigro, L Nikolić, K Nilsson, K Nishijima, T Njoh Ekoume, K Noda, S Nozaki, Y Ohtani, A Okumura, J Otero-Santos, S Paiano, M Palatiello, D Paneque, R Paoletti, J M Paredes, M Peresano, M Persic, M Pihet, G Pirola, F Podobnik, P G Prada Moroni, E Prandini, G Principe, C Priyadarshi, W Rhode, M Ribó, J Rico, C Righi, N Sahakyan, T Saito, K Satalecka, F G Saturni, B Schleicher, K Schmidt, F Schmuckermaier, J L Schubert, T Schweizer, A Sciaccaluga, G Silvestri, J Sitarek, V Sliusar, D Sobczynska, A Spolon, A Stamerra, J Strišković, D Strom, M Strzys, Y Suda, T Surić, S Suutarinen, H Tajima, M Takahashi, R Takeishi, P Temnikov, K Terauchi, T Terzić, M Teshima, S Truzzi, A Tutone, S Ubach, J van Scherpenberg, M Vazquez Acosta, S Ventura, I Viale, C F Vigorito, V Vitale, R Walter, M Will, C Wunderlich, T Yamamoto, G Chon, C Díaz, M Fiori, M Lobo, G Naletto, M Polo, J J Rodríguez-Vázquez, P Saha, L Zampieri, Performance and first measurements of the MAGIC stellar intensity interferometer, Monthly Notices of the Royal Astronomical Society, Volume 529, Issue 4, April 2024, Pages 4387–4404, https://doi.org/10.1093/mnras/stae697
© 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
https://creativecommons.org/licenses/by/4.0/
https://urn.fi/URN:NBN:fi:oulu-202405243908
Tiivistelmä
In recent years, a new generation of optical intensity interferometers has emerged, leveraging the existing infrastructure of Imaging Atmospheric Cherenkov Telescopes (IACTs). The MAGIC telescopes host the MAGIC-SII system (Stellar Intensity Interferometer), implemented to investigate the feasibility and potential of this technique on IACTs. After the first successful measurements in 2019, the system was upgraded and now features a real-time, dead-time-free, 4-channel, GPU-based correlator. These hardware modifications allow seamless transitions between MAGIC’s standard very-high-energy gamma-ray observations and optical interferometry measurements within seconds. We establish the feasibility and potential of employing IACTs as competitive optical Intensity Interferometers with minimal hardware adjustments. The measurement of a total of 22 stellar diameters are reported, 9 corresponding to reference stars with previous comparable measurements, and 13 with no prior measurements. A prospective implementation involving telescopes from the forthcoming Cherenkov Telescope Array Observatory’s Northern hemisphere array, such as the first prototype of its Large-Sized Telescopes, LST-1, is technically viable. This integration would significantly enhance the sensitivity of the current system and broaden the UV-plane coverage. This advancement would enable the system to achieve competitive sensitivity with the current generation of long-baseline optical interferometers over blue wavelengths.
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