Zobrazeno 1 - 10
of 648
pro vyhledávání: '"Chabot M"'
Diffusive shock acceleration (DSA) is a prominent mechanism for energizing charged particles up to very large rigidities at astrophysical collisionless shocks. In addition to ions and electrons, it has been proposed that interstellar dust grains coul
Externí odkaz:
http://arxiv.org/abs/2410.23190
Autor:
Clément, A., Taillard, A., Wakelam, V., Gratier, P., Loison, J. -C., Dartois, E., Dulieu, F., Noble, J. A., Chabot, M.
Ice is ubiquitous in the interstellar medium. We model the formation of the main constituents of interstellar ices, including H2O, CO2 , CO, and CH3 OH. We strive to understand what physical or chemical parameters influence the final composition of t
Externí odkaz:
http://arxiv.org/abs/2306.08346
Autor:
Taillard, A., WakelaM, V., Gratier, P., Dartois, E., Chabot, M., Noble, J. A., Keane, J. V., Boogert, A. C. A., Harsono, D.
Cold cores are an early step of star formation, characterized by densities > 10$^4$ cm$^{-3}$, low temperatures (< 15 K), and very low external UV radiation. We investigate the physico-chemical processes at play to tracing the origin of molecules tha
Externí odkaz:
http://arxiv.org/abs/2301.01288
Autor:
Dormard, J. -J., Assié, M., Grassi, L., Rauly, E., Beaumel, D., Brulin, G., Chabot, M., Coacolo, J. -L., Flavigny, F., Genolini, B., Hammache, F., Barkach, T. Id, Rindel, E., Rosier, Ph., de Séréville, N., Wanlin, E.
The GRIT (Granularity, Resolution, Identification, Transparency) Silicon array is intended to measure direct reactions. Its design is based on several layers (three layers in the forward direction, two backward) of custom-made trapezoidal and square
Externí odkaz:
http://arxiv.org/abs/2111.02898
Autor:
Wakelam, V., Dartois, E., Chabot, M., Spezzano, S., Navarro-Almaida, D., Loison, J. -C., Fuente, A.
Publikováno v:
A&A 652, A63 (2021)
Under cold conditions in dense cores, gas-phase molecules and atoms are depleted from the gas-phase to the surface of interstellar grains. Considering the time scales and physical conditions within these cores, a portion of these molecules has to be
Externí odkaz:
http://arxiv.org/abs/2106.08621
Autor:
Galtarossa, F., Pierens, M., Assié, M., Delpech, V., Galet, F., Saugnac, H., Brugnara, D., Ramos, D., Beaumel, D., Blache, P., Chabot, M., Chatelet, F., Clément, E., Flavigny, F., Giret, A., Gottardo, A., Goupil, J., Lemasson, A., Matta, A., Ménager, L., Rindel, E.
Direct nuclear reactions with radioactive ion beams represent an extremely powerful tool to extend the study of fundamental nuclear properties far from stability. These measurements require pure and dense targets to cope with the low beam intensities
Externí odkaz:
http://arxiv.org/abs/2105.06279
Cosmic-ray-induced sputtering is one of the important desorption mechanisms at work in astrophysical environments. The chemical evolution observed in high-density regions, from dense clouds to protoplanetary disks, and the release of species condense
Externí odkaz:
http://arxiv.org/abs/2102.04499
Publikováno v:
A&A 634, A103 (2020)
Methanol ice is embedded in interstellar ice mantles present in dense molecular clouds. We aim to measure the sputtering efficiencies starting from different ice mantles of varying compositions experimentally, in order to evaluate their potential imp
Externí odkaz:
http://arxiv.org/abs/2001.06349
Autor:
Dartois, E., Chabot, M., Barkach, T. Id, Rothard, H., Augé, B., Agnihotri, A. N., Domaracka, A., Boduch, P.
The occurrence of complex organic molecules (COMs) in the gas phase at low temperature in the dense phases of the ISM suggests that a non-thermal desorption mechanism is at work because otherwise, COMs should condense within a short timescale onto du
Externí odkaz:
http://arxiv.org/abs/1906.03084
Autor:
Dartois, E., Chabot, M., Barkach, T. Id, Rothard, H., Augé, B., Agnihotri, A. N., Domaracka, A., Boduch, P.
Publikováno v:
A&A 618, A173 (2018)
Interstellar grain mantles present in dense interstellar clouds are in constant exchange with the gas phase via accretion and desorption mechanisms such as UV, X-ray photodesorption, cosmic ray induced sputtering, grain thermal fluctuations, and chem
Externí odkaz:
http://arxiv.org/abs/1809.09180