Zobrazeno 1 - 10
of 619
pro vyhledávání: '"Krichbaum, T. P."'
Autor:
Paraschos, G. F., Debbrecht, L. C., Kramer, J. A., Traianou, E., Liodakis, I., Krichbaum, T. P., Kim, J. -Y., Janssen, M., Nair, D. G., Savolainen, T., Ros, E., Bach, U., Hodgson, J. A., Lisakov, M., MacDonald, N. R., Zensus, J. A.
Publikováno v:
A&A 686, L5 (2024)
The spatial scales of relativistic radio jets, probed by relativistic magneto-hydrodynamic jet launching simulations (RMHDs) and by most very-long-baseline interferometry (VLBI) observations differ by an order of magnitude. Bridging the gap between t
Externí odkaz:
http://arxiv.org/abs/2405.00097
Autor:
Paraschos, G. F., Kim, J. -Y., Wielgus, M., Röder, J., Krichbaum, T. P., Ros, E., Agudo, I., Myserlis, I., Moscibrodzka, M., Traianou, E., Zensus, J. A., Blackburn, L., Chan, C. -K., Issaoun, S., Janssen, M., Johnson, M. D., Fish, V. L., Akiyama, K., Alberdi, A., Alef, W., Algaba, J. C., Anantua, R., Asada, K., Azulay, R., Bach, U., Baczko, A. -K., Ball, D., Baloković, M., Barrett, J., Bauböck, M., Benson, B. A., Bintley, D., Blundell, R., Bouman, K. L., Bower, G. C., Boyce, H., Bremer, M., Brinkerink, C. D., Brissenden, R., Britzen, S., Broderick, A. E., Broguiere, D., Bronzwaer, T., Bustamante, S., Byun, D. -Y., Carlstrom, J. E., Ceccobello, C., Chael, A., Chang, D. O., Chatterjee, K., Chatterjee, S., Chen, M. T., Chen, Y., Cheng, X., Cho, I., Christian, P., Conroy, N. S., Conway, J. E., Cordes, J. M., Crawford, T. M., Crew, G. B., Cruz-Osorio, A., Cui, Y., Dahale, R., Davelaar, J., De Laurentis, M., Deane, R., Dempsey, J., Desvignes, G., Dexter, J., Dhruv, V., Doeleman, S. S., Dougal, S., Dzib, S. A., Eatough, R. P., Emami, R., Falcke, H., Farah, J., Fomalont, E., Ford, H. A., Foschi, M., Fraga-Encinas, R., Freeman, W. T., Friberg, P., Fromm, C. M., Fuentes, A., Galison, P., Gammie, C. F., García, R., Gentaz, O., Georgiev, B., Goddi, C., Gold, R., Gómez-Ruiz, A. I., Gómez, J. L., Gu, M., Gurwell, M., Hada, K., Haggard, D., Haworth, K., Hecht, M. H., Hesper, R., Heumann, D., Ho, L. C., Ho, P., Honma, M., Huang, C. L., Huang, L., Hughes, D. H., Ikeda, S., Impellizzeri, C. M. V., Inoue, M., James, D. J., Jannuzi, B. T., Jeter, B., Jaing, W., Jiménez-Rosales, A., Jorstad, S., Joshi, A. V., Jung, T., Karami, M., Karuppusamy, R., Kawashima, T., Keating, G. K., Kettenis, M., Kim, D. -J., Kim, J., Kino, M., Koay, J. Y., Kocherlakota, P., Kofuji, Y., Koch, P. M., Koyama, S., Kramer, C., Kramer, J. A., Kramer, M., Kuo, C. -Y., La Bella, N., Lauer, T. R., Lee, D., Lee, S. -S., Leung, P. K., Levis, A., Li, Z., Lico, R., Lindahl, G., Lindqvist, M., Lisakov, M., Liu, J., Liu, K., Liuzzo, E., Lo, W. -P., Lobanov, A. P., Loinard, L., Lonsdale, C. J., Lowitz, A. E., Lu, R. -S., MacDonald, N. R., Mao, J., Marchili, N., Markoff, S., Marrone, D. P., Marscher, A. P., Martí-Vidal, I., Matsushita, S., Matthews, L. D., Medeiros, L., Menten, K. M., Michalik, D., Mizuno, I., Mizuno, Y., Moran, J. M., Moriyama, K., Mulaudzi, W., Müller, C., Müller, H., Mus, A., Musoke, G., Nadolski, A., Nagai, H., Nagar, N. M., Nakamura, M., Narayanan, G., Natarajan, I., Nathanail, A., Fuentes, S. Navarro, Neilsen, J., Neri, R., Ni, C., Noutsos, A., Nowak, M. A., Oh, J., Okino, H., Olivares, H., Ortiz-León, G. N., Oyama, T., Özel, F., Palumbo, D. C. M., Park, J., Parsons, H., Patel, N., Pen, U. -L., Piétu, V., Plambeck, R., PopStefanija, A., Porth, O., Pötzl, F. M., Prather, B., Preciado-López, J. A., Psaltis, D., Pu, H. -Y., Ramakrishnan, V., Rao, R., Rawlings, M. G., Raymond, A. W., Rezzolla, L., Ricarte, A., Ripperda, B., Roelofs, F., Rogers, A., Romero-Cañizales, C., Roshanineshat, A., Rottmann, H., Roy, A. L., Ruiz, I., Ruszczyk, C., Rygl, K. L. J., Sánchez, S., Sánchez-Argüelles, D., Sánchez-Portal, M., Sasada, M., Satapathy, K., Savolainen, T., Schloerb, F. P., Schonfeld, J., Schuster, K., Shao, L., Shen, Z., Small, D., Sohn, B. W., SooHoo, J., Salas, L. D. Sosapanta, Souccar, K., Sun, H., Tazaki, F., Tetarenko, A. J., Tiede, P., Tilanus, R. P. J., Titus, M., Torne, P., Toscano, T., Trent, T., Trippe, S., Turk, M., van Bemmel, I., van Langevelde, H. J., van Rossum, D. R., Vos, J., Wagner, J., Ward-Thompson, D., Wardle, J., Washington, J. E., Weintroub, J., Wharton, R., Wiik, K., Witzel, G., Wondrak, M. F., Wong, G. N., Wu, Q., Yadlapalli, N., Yamaguchi, P., Yfantis, A., Yoon, D., Young, A., Young, K., Younsi, Z., Yu, W., Yuan, F., Yuan, Y. -F., Zhang, S., Zhao, G. Y., Zhao, S. -S.
Publikováno v:
Issue: A&A Volume 682, February 2024; Article number: L3; Number of pages: 15
3C84 is a nearby radio source with a complex total intensity structure, showing linear polarisation and spectral patterns. A detailed investigation of the central engine region necessitates the use of VLBI above the hitherto available maximum frequen
Externí odkaz:
http://arxiv.org/abs/2402.00927
Autor:
Eppel, F., Kadler, M., Heßdörfer, J., Benke, P., Debbrecht, L., Eich, J., Gokus, A., Hämmerich, S., Kirchner, D., Paraschos, G. F., Rösch, F., Schulga, W., Sinapius, J., Weber, P., Bach, U., Dorner, D., Edwards, P. G., Giroletti, M., Kraus, A., Hervet, O., Koyama, S., Krichbaum, T. P., Mannheim, K., Ros, E., Zacharias, M., Zensus, J. A.
Aims. We introduce the TELAMON program which is using the Effelsberg 100-m telescope to monitor the radio spectra of active galactic nuclei (AGN) under scrutiny in astroparticle physics, specifically TeV blazars and candidate neutrino-associated AGN.
Externí odkaz:
http://arxiv.org/abs/2401.06296
Autor:
Koay, J. Y., Romero-Cañizales, C., Matthews, L. D., Janssen, M., Blackburn, L., Tilanus, R. P. J., Park, J., Asada, K., Matsushita, S., Baczko, A. -K., La Bella, N., Chan, C. -K., Crew, G. B., Fish, V., Patel, N., Ramakrishnan, V., Rottmann, H., Wagner, J., Wiik, K., Friberg, P., Goddi, C., Issaoun, S., Keating, G., Kim, J., Krichbaum, T. P., Marrone, D., Narayanan, G., Roy, A., Ruíz, I., Sánchez, S., Torne, P., Weintroub, J.
The Event Horizon Telescope (EHT) observations carried out in 2018 April at 1.3 mm wavelengths included 9 stations in the array, comprising 7 single-dish telescopes and 2 phased arrays. The metadata package for the 2018 EHT observing campaign contain
Externí odkaz:
http://arxiv.org/abs/2312.03505
Autor:
Paraschos, G. F., Kim, J. -Y., Krichbaum, T. P., Oh, J., Hodgson, J. A., Gurwell, M. A., Zensus, J. A.
The study of jet launching in AGN is an important research method to better understand supermassive black holes (SMBHs) and their immediate surroundings. The main theoretical jet launching scenarios invoke either magnetic field lines anchored to the
Externí odkaz:
http://arxiv.org/abs/2312.01953
Autor:
Heßdörfer, J., Kadler, M., Benke, P., Debbrecht, L., Eich, J., Eppel, F., Gokus, A., Hämmerich, S., Kirchner, D., Paraschos, G. F., Rösch, F., Schulga, W., Sinapius, J., Weber, P., Bach, U., Berge, D., Buson, S., Dorner, D., Edwards, P. G., Fromm, C. M., Giroletti, M., Hervet, O., Kappes, A., Koyama, S., Kraus, A., Krichbaum, T. P., Lindfors, E., Mannheim, K., Ojha, R., Pueschel, E., Ros, E., Schleicher, B., Sitarek, J., Wilms, J., Zacharias, M., Zensus, J. A.
We present recent results of the TELAMON program, which is using the Effelsberg 100-m telescope to monitor the radio spectra of active galactic nuclei (AGN) under scrutiny in astroparticle physics, namely TeV blazars and neutrino-associated AGN. Our
Externí odkaz:
http://arxiv.org/abs/2309.14794
Autor:
Komossa, S., Kraus, A., Grupe, D., Gonzalez, A. G., Gurwell, M. A., Gallo, L. C., Liu, F. K., Myserlis, I., Krichbaum, T. P., Laine, S., Bach, U., Gomez, J. L., Parker, M. L., Yao, S., Berton, M.
Based on our dedicated Swift monitoring program, MOMO, OJ 287 is one of the best-monitored blazars in the X-ray--UV--optical regime. Here, we report results from our accompanying, dense, multi-frequency (1.4--44 GHz) radio monitoring of OJ 287 betwee
Externí odkaz:
http://arxiv.org/abs/2302.11486
Autor:
Eppel, F., Kadler, M., Ros, E., Roesch, F., Hessdoerfer, J., Benke, P., Edwards, P. G., Fromm, C. M., Giroletti, M., Gokus, A., Gomez, J. L., Haemmerich, S., Kirchner, D., Kovalev, Y. Y., Krichbaum, T. P., Lister, M. L., Nanci, C., Ojha, R., Paraschos, G. F., Plavin, A., Readhead, A. C. S., Stevens, J., Weber, P.
In the past years, evidence has started piling up that some high-energy cosmic neutrinos can be associated with blazars in flaring states. On February 26, 2022, a new blazar-neutrino coincidence has been reported: the track-like neutrino event IC2202
Externí odkaz:
http://arxiv.org/abs/2301.13859
Autor:
Paraschos, G. F., Mpisketzis, V., Kim, J. -Y., Witzel, G., Krichbaum, T. P., Zensus, J. A., Gurwell, M. A., Lähteenmäki, A., Tornikoski, M., Kiehlmann, S., Readhead, A. C. S.
Publikováno v:
A&A 669, A32 (2023)
Total intensity variability light curves offer a unique insight into the ongoing debate about the launching mechanism of jets. For this work, we utilise the availability of radio and $\gamma$-ray light curves over a few decades of the radio source 3C
Externí odkaz:
http://arxiv.org/abs/2210.09795
Autor:
Komossa, S., Kraus, A., Grupe, D., Parker, M. L., Gonzalez, A., Gallo, L. C., Gurwell, M. A., Laine, S., Yao, S., Chandra, S., Dey, L., Gomez, J. L., Hada, A. Gopakumar. K., Haggard, D., Hollett, A. R., Jermak, H., Jorstad, S., Krichbaum, T. P., Markoff, S., McCall, C., Neilsen, J., Nowak, M.
We are carrying out the densest and longest multiyear, multiwavelength monitoring project of OJ 287 ever done. The project MOMO (Multiwavelength Observations and Modelling of OJ 287) covers wavelengths from the radio to the high-energy regime. A few
Externí odkaz:
http://arxiv.org/abs/2207.11291