Zobrazeno 1 - 10
of 219
pro vyhledávání: '"Surcis G"'
Abridged. The LINER galaxy TXS2226-184 is known to host a very luminous 22 GHz water maser, called a gigamaser at the time of its discovery. To date, the nature of this maser is still being debated, in particular, whether it is associated with a nucl
Externí odkaz:
http://arxiv.org/abs/2407.13373
Publikováno v:
A&A 682, A25 (2024)
Masers are a unique tool to investigate the emitting gas in the innermost regions of AGNs and to map accretion disks and tori orbiting around supermassive black holes. IC485, which is classified as a LINER or Seyfert galaxy, hosts a bright water mase
Externí odkaz:
http://arxiv.org/abs/2310.08998
Autor:
Aberfelds, A, Bartkiewicz, A, Szymczak, M, Šteinbergs, J, Surcis, G, Kobak, A, Durjasz, M, Shmeld, I
Publikováno v:
MNRAS, Volume 524, Issue 1, September 2023, Pages 599-618
{The variability study of 6.7\,GHz methanol masers has become a useful way to improve our understanding of the physical conditions in high-mass star-forming regions.} {Based on the single-dish monitoring using the Irbene telescopes, we selected three
Externí odkaz:
http://arxiv.org/abs/2307.03663
Autor:
Burns, R. A., Uno, Y., Sakai, N., Blanchard, J., Rosli, Z., Orosz, G., Yonekura, Y., Tanabe, Y., Sugiyama, K., Hirota, T., Kim, Kee-Tae, Aberfelds, A., Volvach, A. E., Bartkiewicz, A., Garatti, A. Caratti o, Sobolev, A. M., Stecklum, B., Brogan, C., Phillips, C., Ladeyschikov, D. A., Johnstone, D., Surcis, G., MacLeod, G. C., Linz, H., Chibueze, J. O., Brand, J., Eislöffel, J., Hyland, L., Uscanga, L., Olech, M., Durjasz, M., Bayandina, O., Breen, S., Ellingsen, S. P., Heever, S. P. van den, Hunter, T. R., Chen, X.
High-mass protostars (M$_{\star} >$ 8 M$_{\odot}$) are thought to gain the majority of their mass via short, intense bursts of growth. This episodic accretion is thought to be facilitated by gravitationally unstable and subsequently inhomogeneous acc
Externí odkaz:
http://arxiv.org/abs/2304.14740
Autor:
Burns, R. A., Sugiyama, K., Hirota, T., Kim, Kee-Tae, Sobolev, A. M., Stecklum, B., MacLeod, G. C., Yonekura, Y., Olech, M., Orosz, G., Ellingsen, S. P., Hyland, L., Garatti, A. Caratti o, Brogan, C., Hunter, T. R., Phillips, C., Heever, S. P. van den, Eislöffel, J., Linz, H., Surcis, G., Chibueze, J. O., Baan, W., Kramer, B.
High-mass stars are thought to accumulate much of their mass via short, infrequent bursts of disk-aided accretion. Such accretion events are rare and difficult to observe directly but are known to drive enhanced maser emission. In this Letter we repo
Externí odkaz:
http://arxiv.org/abs/2304.14739
Autor:
Surcis, G., Vlemmings, W. H. T., Goddi, C., Torrelles, J. M., Gómez, J. F., Rodríguez-Kamenetzky, A., Carrasco-González, C., Curiel, S., Kim, S. -W., Kim, J. -S., van Langevelde, H. J.
Publikováno v:
A&A 673, A10 (2023)
Several radio sources have been detected in the HMSFR W75N(B), among them the massive YSOs VLA1 and VLA2 are of great interest. These are thought to be in different evolutionary stages. In particular, VLA1 is at the early stage of the photoionization
Externí odkaz:
http://arxiv.org/abs/2303.00019
Autor:
Surcis, G., Vlemmings, W. H. T., van Langevelde, H. J., Kramer, B. Hutawarakorn, Bartkiewicz, A.
Publikováno v:
A&A 658, A78 (2022)
Although the role of magnetic fields in launching molecular outflows in massive YSOs has been convincingly demonstrated by theoretical arguments, observationally, the alignment of the magnetic field lines with the molecular outflows is still under de
Externí odkaz:
http://arxiv.org/abs/2111.08023
Autor:
Nimmo, K., Hewitt, D. M., Hessels, J. W. T., Kirsten, F., Marcote, B., Bach, U., Blaauw, R., Burgay, M., Corongiu, A., Feiler, R., Gawroński, M. P., Giroletti, M., Karuppusamy, R., Keimpema, A., Kharinov, M. A., Lindqvist, M., Maccaferri, G., Melnikov, A., Mikhailov, A., Ould-Boukattine, O. S., Paragi, Z., Pilia, M., Possenti, A., Snelders, M. P., Surcis, G., Trudu, M., Venturi, T., Vlemmings, W., Wang, N., Yang, J., Yuan, J.
Very long baseline interferometric (VLBI) localisations of repeating fast radio bursts (FRBs) have demonstrated a diversity of local environments: from nearby star-forming regions to globular clusters. Here we report the VLBI localisation of FRB 2020
Externí odkaz:
http://arxiv.org/abs/2111.01600
Autor:
Nimmo, K., Hessels, J. W. T., Kirsten, F., Keimpema, A., Cordes, J. M., Snelders, M. P., Hewitt, D. M., Karuppusamy, R., Archibald, A. M., Bezukovs, V., Bhardwaj, M., Blaauw, R., Buttaccio, S. T., Cassanelli, T., Conway, J. E., Corongiu, A., Feiler, R., Fonseca, E., Forssen, O., Gawronski, M., Giroletti, M., Kharinov, M. A., Leung, C., Lindqvist, M., Maccaferri, G., Marcote, B., Masui, K. W., Mckinven, R., Melnikov, A., Michilli, D., Mikhailov, A., Ng, C., Orbidans, A., Ould-Boukattine, O. S., Paragi, Z., Pearlman, A. B., Petroff, E., Rahman, M., Scholz, P., Shin, K., Smith, K. M., Stairs, I. H., Surcis, G., Tendulkar, S. P., Vlemmings, W., Wang, N., Yang, J., Yuan, J.
Fast radio bursts (FRBs) are extragalactic radio flashes of unknown physical origin. Their high luminosities and short durations require extreme energy densities, like those found in the vicinity of neutron stars and black holes. Studying the burst i
Externí odkaz:
http://arxiv.org/abs/2105.11446
Autor:
Kirsten, F., Marcote, B., Nimmo, K., Hessels, J. W. T., Bhardwaj, M., Tendulkar, S. P., Keimpema, A., Yang, J., Snelders, M. P., Scholz, P., Pearlman, A. B., Law, C. J., Peters, W. M., Giroletti, M., Paragi, Z., Bassa, C., Hewitt, D. M., Bach, U., Bezrukovs, V., Burgay, M., Buttaccio, S. T., Conway, J. E., Corongiu, A., Feiler, R., Forssén, O., Gawroński, M. P., Karuppusamy, R., Kharinov, M. A., Lindqvist, M., Maccaferri, G., Melnikov, A., Ould-Boukattine, O. S., Possenti, A., Surcis, G., Wang, N., Yuan, J., Aggarwal, K., Anna-Thomas, R., Bower, G. C., Blaauw, R., Burke-Spolaor, S., Cassanelli, T., Clarke, T. E., Fonseca, E., Gaensler, B. M., Gopinath, A., Kaspi, V. M., Kassim, N., Lazio, T. J. W., Leung, C., Li, D. Z., Lin, H. H., Masui, K. W., Mckinven, R., Michilli, D., Mikhailov, A., Ng, C., Orbidans, A., Pen, U. L., Petroff, E., Rahman, M., Ransom, S. M., Shin, K., Smith, K. M., Stairs, I. H., Vlemmings, W.
Fast radio bursts (FRBs) are exceptionally luminous flashes of unknown physical origin, reaching us from other galaxies (Petroff et al. 2019). Most FRBs have only ever been seen once, while others flash repeatedly, though sporadically (Spitler et al.
Externí odkaz:
http://arxiv.org/abs/2105.11445