Zobrazeno 1 - 10
of 5 275
pro vyhledávání: '"Guerrero, M"'
A considerable number of asymptotic giant branch (AGB) stars exhibit UV excess and/or X-ray emission indicative of the presence of a binary companion. AGB stars are so bright that they easily outshine their companions, making almost impossible their
Externí odkaz:
http://arxiv.org/abs/2411.14270
Autor:
Vásquez-Torres, D. A., Toalá, J. A., Sacchi, A., Guerrero, M. A., Tejeda, E., Karovska, M., Montez Jr, R.
Multi-epoch Chandra and XMM-Newton observations of the symbiotic system R Aquarii (R Aqr) spanning 22 yr are analysed by means of a reflection model produced by an accretion disc. This methodology helps dissecting the contribution from different comp
Externí odkaz:
http://arxiv.org/abs/2411.04935
Autor:
Gates, J. M., Orford, R., Rudolph, D., Appleton, C., Barrios, B. M., Benitez, J. Y., Bordeau, M., Botha, W., Campbell, C. M., Chadderton, J., Chemey, A. T., Clark, R. M., Crawford, H. L., Despotopulos, J. D., Dorvaux, O., Esker, N. E., Fallon, P., Folden III, C. M., Gall, B. J. P., Garcia, F. H., Golubev, P., Gooding, J. A., Grebo, M., Gregorich, K. E., Guerrero, M., Henderson, R. A., Herzberg, R. -D., Hrabar, Y., King, T. T., Covo, M. Kireeff, Kirkland, A. S., Krücken, R., Leistenschneider, E., Lykiardopoulou, E. M., McCarthy, M., Mildon, J. A., Müller-Gatermann, C., Phair, L., Pore, J. L., Rice, 1 E., Rykaczewski, K. P., Sammis, B. N., Sarmiento, L. G., Seweryniak, D., Sharp, D. K., Sinjari, A., Steinegger, P., Stoyer, M. A., Szornel, J. M., Thomas, K., Todd, D. S., Vo, P., Watson, V., Wooddy, P. T.
The $^{244}$Pu($^{50}$Ti,$xn$)$^{294-x}$Lv reaction was investigated at Lawrence Berkeley National Laboratory's 88-Inch Cyclotron facility. The experiment was aimed at the production of a superheavy element with $Z\ge 114$ by irradiating an actinide
Externí odkaz:
http://arxiv.org/abs/2407.16079
Autor:
Santamaría, E., Toalá, J. A., Liimets, T., Guerrero, M. A., Botello, M. K., Sabin, L., Ramos-Larios, G.
We present an analysis of high-dispersion spectroscopic observations of the symbiotic system R Aquarii (R Aqr) obtained with the Manchester Echelle Spectrograph (MES) at the 2.1 m telescope of the San Pedro M\'artir Observatory (Mexico). An interpret
Externí odkaz:
http://arxiv.org/abs/2404.17710
We present the analysis of archival Very Large Telescope (VLT) MUSE and multi-epoch Hubble Space Telescope (HST) WFPC2 and WFC3/UVIS narrow-band observations of the remnant associated with the ejecta of the mid-nineteenth century outburst of the recu
Externí odkaz:
http://arxiv.org/abs/2402.07879
The acquisition of high-quality deep images of planetary nebulae (PNe) has allowed the detection of a wealth of small-scale features, which highlight the complexity of the formation history and physical processes shaping PNe. Here we present the disc
Externí odkaz:
http://arxiv.org/abs/2312.10532
Autor:
Estrada-Dorado, S., Lora, V., Toalá, J. A., Esquivel, A., Guerrero, M. A., Maldonado, R. F., Chu, Y. -H.
The emission of hard X-rays associated with white dwarfs (WD) can be generated by the presence of a stellar companion either by the companion's coronal emission or by an accretion disk formed by material stripped from the companion. Recent studies ha
Externí odkaz:
http://arxiv.org/abs/2311.12942
Autor:
Riccardi, Elisa, Guerrero, M. Alejandro Justo, Pistore, Valentino, Seitner, Lukas, Jirauschek, Christian, Li, Lianhe, Davies, A. Giles, Linfield, Edmund H., Vitiello, Miriam S.
Optical frequency combs (FCs), that establish a rigid phase-coherent link between the microwave and optical domains of the electromagnetic spectrum, are emerging as a key high-precision tools for the development of quantum technology platforms. These
Externí odkaz:
http://arxiv.org/abs/2311.03123
We present the analysis of spatially-resolved spectroscopic observations of the born-again planetary nebula (PN) A 78 that are used to investigate the chemistry and physical properties of its three main morphological components, namely the inner knot
Externí odkaz:
http://arxiv.org/abs/2309.08242
Autor:
Lora, V., Toalá, J. A., González-Carbajal, J. I., Guerrero, M. A., Esquivel, A., Ramos-Larios, G.
We present the first 3D radiation-hydrodynamic simulations of the formation of planetary nebulae (PNe) emerging from 3D spiral patterns. We use the GUACHO code to create 3D spiral structures as a consequence of the distortions on the geometry of the
Externí odkaz:
http://arxiv.org/abs/2304.08668