Zobrazeno 1 - 10
of 2 724
pro vyhledávání: '"DRAKE, J. J"'
Autor:
Guarcello, M. G., Almendros-Abad, V., Lovell, J. B., Monsch, K., Muzic, K., Martiinez-Galarza, J. R., Drake, J. J., Anastasopoulou, K., Andersen, M., Argiroffi, C., Bayo, A., Bonito, R., Capela, D., Damiani, F., Gennaro, M., Ginsburg, A., Grebel, E. K., Hora, J. L., Moraux, E., Najarro, F., Negueruela, I., Prisinzano, L., Richardson, N. D., Ritchie, B., Robberto, M., Rom, T., Sabbi, E., Sciortino, S., Umana, G., Winter, A., Wright, N. J., Zeidler, P.
The typically large distances, extinction, and crowding of Galactic supermassive star clusters have so far hampered the identification of their very low mass members, required to extend our understanding of star and planet formation, and early stella
Externí odkaz:
http://arxiv.org/abs/2411.13051
Publikováno v:
Astrophys.J.972:109,2024
Hard X-ray-emitting ($\delta$-type) symbiotic binaries, which exhibit a strong hard X-ray excess, have posed a challenge to our understanding of accretion physics in degenerate dwarfs. RT Cru, which is a member of the $\delta$-type symbiotics, shows
Externí odkaz:
http://arxiv.org/abs/2406.17161
Autor:
Bhargava, Yash, Dewangan, Gulab Chand, Anupama, G. C., Kamath, U. S., Sonith, L. S., Singh, Kulinder Pal, Drake, J. J., Beardmore, A., Luna, G. J. M., Orio, M., Page, K. L.
Nova Her 2021 or V1674 Her was one of the fastest novae to be observed so far. We report here the results from our timing and spectral studies of the source observed at multiple epochs with AstroSat. We report the detection of a periodicity in the so
Externí odkaz:
http://arxiv.org/abs/2312.10291
Autor:
Guarcello, M. G., Flaccomio, E., Albacete-Colombo, J. F., Almendros-Abad, V., Anastasopoulou, K., Andersen, M., Argiroffi, C., Bayo, A., Bartlett, E. S., Bastian, N., De Becker, M., Best, W., Bonito, R., Borghese, A., Calzetti, D., Castellanos, R., Cecchi-Pestellini, C., Clark, S., Clarke, C. J., Zelati, F. Coti, Damiani, F., Drake, J. J., Gennaro, M., Ginsburg, A., Grebel, E. K., Hora, J. L., Israel, G. L., Lawrence, G., Locci, D., Mapelli, M., Martinez-Galarza, J. R., Micela, G., Miceli, M., Moraux, E., Muzic, K., Najarro, F., Negueruela, I., Nota, A., Pallanca, C., Prisinzano, L., Ritchie, B., Robberto, M., Rom, T., Sabbi, E., Scholz, A., Sciortino, S., Trigilio, C., Umana, G., Winter, A., Wright, N. J., Zeidler, P.
Context. With a mass exceeding several 10^4 solar masses and a rich and dense population of massive stars, supermassive young star clusters represent the most massive star-forming environment that is dominated by the feedback from massive stars and g
Externí odkaz:
http://arxiv.org/abs/2312.08947
Autor:
Núñez, Alejandro, Agüeros, M. A., Curtis, J. L., Covey, K. R., Douglas, S. T., Chu, S. R., DeLaurentiis, S., Wang, M., Drake, J. J.
Low-mass (< 1.2 Solar mass) main-sequence stars lose angular momentum over time, leading to a decrease in their magnetic activity. The details of this rotation-activity relation remain poorly understood. Using observations of members of the $\approx$
Externí odkaz:
http://arxiv.org/abs/2311.18690
Autor:
Miller, J. M., Mockler, B., Ramirez-Ruiz, E., Draghis, P. A., Drake, J. J., Raymond, J., Reynolds, M. T., Xiang, X., Yun, S. -B., Zoghbi, A.
The proximity and duration of the tidal disruption event (TDE) ASASSN-14li led to the discovery of narrow, blue-shifted absorption lines in X-rays and UV. The gas seen in X-ray absorption is consistent with bound material close to the apocenter of el
Externí odkaz:
http://arxiv.org/abs/2308.10964
Autor:
Amazo-Gómez, E. M., Alvarado-Gómez, J. D., Poppenhaeger, K., Hussain, G. A. J., Wood, B. E., Drake, J. J., Nascimento Jr., J. -D. do, Anthony, F., Sanz-Forcada, J., Stelzer, B., Donati, J. F., Del Sordo, F., Damasso, M., Redfield, S., König, P. C., Hébrard, G., Miles-Páez, P. A.
A comprehensive multi-wavelength campaign has been carried out to probe stellar activity and variability in the young Sun-like star $\iota$-Horologii. We present the results from long-term spectropolarimetric monitoring of the system by using the ult
Externí odkaz:
http://arxiv.org/abs/2307.01744
High Resolution X-ray Spectra of RS Ophiuchi (2006 and 2021): Revealing the cause of SSS variability
Autor:
Ness, J. -U., Beardmore, A. P., Bode, M. F., Darnley, M. J., Dobrotka, A., Drake, J. J., Magdolen, J., Munari, U., Osborne, J. P., Orio, M., Page, K. L., Starrfield, S.
Publikováno v:
A&A 670, A131 (2023)
Swift observed the SSS phase in RS Oph much fainter in 2021 than in 2006, and we compare an XMM-Newton grating spectrum on day 55.6 in 2021 (2021d55.6) to SSS Chandra and XMM-Newton grating spectra from days 2006d39.7, 2006d54, and 2006d66.9. We pres
Externí odkaz:
http://arxiv.org/abs/2212.07169
Autor:
Lynch, B. J., Wood, B. E., Jin, M., Török, T., Sun, X., Palmerio, E., Osten, R. A., Vidotto, A. A., Cohen, O., Alvarado-Gómez, J. D., Drake, J. J., Airapetian, V. S., Notsu, Y., Veronig, A., Namekata, K., Winslow, R. M., Jian, L. K., Vourlidas, A., Lugaz, N., Al-Haddad, N., Manchester, W. B., Scolini, C., Farrugia, C. J., Davies, E. E., Nieves-Chinchilla, T., Carcaboso, F., Lee, C. O., Salman, T. M.
Publikováno v:
Bulletin of the American Astronomical Society, 55(3), 254, 2023
The aim of this white paper is to briefly summarize some of the outstanding gaps in the observations and modeling of stellar flares, CMEs, and exoplanetary space weather, and to discuss how the theoretical and computational tools and methods that hav
Externí odkaz:
http://arxiv.org/abs/2210.06476
Energetic particles emitted by active stars are likely to propagate in astrospheric magnetized plasma turbulent and disrupted by the prior passage of energetic Coronal Mass Ejections (CMEs). We carried out test-particle simulations of $\sim$ GeV prot
Externí odkaz:
http://arxiv.org/abs/2207.08952