Ready for O4 II: GRANDMA Observations of Swift GRBs during eight-weeks of Spring 2022

Autor: Melo, I. Tosta e, Ducoin, J. -G., Vidadi, Z., Andrade, C., Rupchandani, V., Agayeva, S., Abdelhadi, J., Abe, L., Aguerre-Chariol, O., Aivazyan, V., Alishov, S., Antier, S., Bai, J. -M., Baransky, A., Bednarz, S., Bendjoya, Ph., Benkhaldoun, Z., Beradze, S., Bizouard, M. A., Bhardwaj, U., Blazek, M., Boër, M., Broens, E., Burkhonov, O., Christensen, N., Cooke, J., Corradi, W., Coughlin, M. W., Culino, T., Daigne, F., Dornic, D., Duverne, P. -A., Ehgamberdiev, S., Eymar, L., Fouad, A., Freeberg, M., Gendre, B., Guo, F., Gokuldass, P., Guessoum, N., Gurbanov, E., Hainich, R., Hasanov, E., Hello, P., Inasaridze, R., Iskandar, A., Ismailov, N., Janati, A., Laz, T. Jegou du, Kann, D. A., Karpov, S., Kiendrebeogo, R. W., Klotz, A., Kneip, R., Kochiashvili, N., Kaeouach, A., Kruiswijk, K., Lamoureux, M., Leroy, N., Lin, W. L., Mao, J., Marchais, D., Mašek, M., Midavaine, T., Moller, A., Morris, D., Natsvlishvili, R., Navarete, F., Guelbenzu, A Nicuesa, Noonan, K., Noysena, K., Oksanen, A., Orange, N. B., Pellouin, C., Peloton, J., Peng, H. W., Pilloix, M., Popowicz, A., Pradier, T., Pyshna, O., Raaijmakers, G., Rajabov, Y., Rau, A., Rinner, C., Rivet, J. -P., Ryh, A. S., Sabil, M., Sadibekova, T., Sasaki, N., Serrau, M., Simon, A., Shokry, A., Smith, K., Sokoliuk, O., Song, X., Takey, A., Thierry, P., Tillayev, Y., Turpin, D., Postigo, A. de Ugarte, Vasylenko, V., Vernet, D., Wang, L., Vachier, F., Vignes, J. P., Wang, X. F., Zeng, X., Zhang, J., Zhu, Y.

We present a campaign designed to train the GRANDMA network and its infrastructure to follow up on transient alerts and detect their early afterglows. In preparation for O4 II campaign, we focused on GRB alerts as they are expected to be an electroma

Externí odkaz: http://arxiv.org/abs/2310.17287

The equilibrium shape of (65) Cybele: primordial or relic of a large impact?

Autor: Marsset, M., Brož, M., Vermersch, J., Rambaux, N., Ferrais, M., Viikinkoski, M., Hanuš, J., Jehin, E., Podlewska-Gaca, E., Bartczak, P., Dudzinski, G., Carry, B., Vernazza, P., Szakáts, R., Duffard, R., Jones, A., Molina, D., Santana-Ros, T., Benkhaldoun, Z., Birlan, M., Dumas, C., Fétick, R., Fusco, T., Jorda, L., Marchis, F., Vachier, F., Yang, B.

Cybele asteroids constitute an appealing reservoir of primitive material genetically linked to the outer Solar System, and the physical properties of the largest members can be readily accessed by large telescopes. We took advantage of the bright app

Externí odkaz: http://arxiv.org/abs/2212.00680

(216) Kleopatra, a low density critically rotating M-type asteroid

Autor: Marchis, F., Jorda, L., Vernazza, P., Brož, M., Hanuš, J., Ferrais, M., Vachier, F., Rambaux, N., Marsset, M., Viikinkoski, M., Jehin, E., Benseguane, S., Podlewska-Gaca, E., Carry, B., Drouard, A., Fauvaud, S., Birlan, M., Berthier, J., Bartczak, P., Dumas, C., Dudzinski, G., Durech, J., Castillo-Rogez, J., Cipriani, F., Colas, F., Fetick, R., Fusco, T., Grice, J., Kryszczynska, A., Lamy, P., Marciniak, A., Michalowski, T., Michel, P., Pajuelo, M., Santana-Ros, T., Tanga, P., Vigan, A., Witasse, O., Yang, B.

Publikováno v: A&A 653, A57 (2021)

Context. The recent estimates of the 3D shape of the M/Xe-type triple asteroid system (216) Kleopatra indicated a density of 5 g.cm$^{-3}$. Such a high density implies a high metal content and a low porosity which is not easy to reconcile with its pe

Externí odkaz: http://arxiv.org/abs/2108.07207

Evidence for differentiation of the most primitive small bodies

Autor: Carry, B., Vernazza, P., Vachier, F., Neveu, M., Hanus, J. Berthier J., Ferrais, M., Jorda, L., Marsset, M., Viikinkoski, M., Bartczak, P., Behrend, R., Benkhaldoun, Z., Birlan, M., Castillo-Rogez, J., Cipriani, F., Colas, F., Drouard, A., Dudzinski, G. P., Desmars, J., Dumas, C., Durech, J., Fetick, R., Fusco, T., Grice, J., Jehin, E., Kaasalainen, M., Kryszczynska, A., Lamy, P., Marchis, F., Marciniak, A., Michalowski, T., Michel, P., Pajuelo, M., Podlewska-Gaca, E., Rambaux, N., Santana-Ros, T., Storrs, A., Tanga, P., Vigan, A., Warner, B., Wieczorek, M., Witasse, O., Yang, B.

Publikováno v: A&A 650, A129 (2021)

Dynamical models of Solar System evolution have suggested that P-/D-type volatile-rich asteroids formed in the outer Solar System and may be genetically related to the Jupiter Trojans, the comets and small KBOs. Indeed, their spectral properties rese

Externí odkaz: http://arxiv.org/abs/2103.06349

Grandma: a network to coordinate them all

Autor: Agayeva, S., Alishov, S., Antier, S., Ayvazian, V. R., Bai, J. M., Baransky, A., Barynova, K., Basa, S., Beradze, S., Bertin, E., Berthier, J., Blažek, M., Boër, M., Burkhonov, O., Burrell, A., Cailleau, A., Chabert, B., Chen, J. C., Christensen, N., Coleiro, A., Corre, D., Coughlin, M. W., Coward, D., Crisp, H., Delattre, C., Dietrich, T., Ducoin, J. G., Duverne, P. A., Eymar, L., Fock-Hang, P., Gendre, B., Hello, P., Howell, E. J., Inasaridze, R. Ya., Ismailov, N., Kann, D. A., Kapanadze, G. V., Karpov, S., Klotz, A., Kochiashvili, N., Lachaud, C., Leroy, N., Van Su, A. Le, Li, W. X., Lin, W. L., Lognone, P., Marchal-Duval, G., Marron, R., Mašek, M., Mo, J., Moore, J. A., Morris, D., Natsvlishvili, R., Noysena, K., Orange, N. B., Perrigault, S., Peyrot, A., Prouza, M., Sadibekova, T., Samadov, D., Simon, A., Stachie, C., Teng, J. P., Thierry, P., Thöne, C. C., Tillayev, Y., Turpin, D., Postigo, A. de Ugarte, Vachier, F., Vardosanidze, M., Vasylenko, V., Vidadi, Z., Wang, C. J., Wang, X. F., Yan, S. Y., Zhang, J. C., Zhang, J. J., Zhang, X. H.

GRANDMA is an international project that coordinates telescope observations of transient sources with large localization uncertainties. Such sources include gravitational wave events, gamma-ray bursts and neutrino events. GRANDMA currently coordinate

Externí odkaz: http://arxiv.org/abs/2008.03962