Did transit through the galactic spiral arms seed crust production on the early Earth?

Autor: Kirkland, C.L., Sutton, P.J., Erickson, T., Johnson, T.E., Hartnady, M.I.H., Smithies, H., Prause, M.

Publikováno v: Geology. 50:1312-1317

Although there is evidence for periodic geological perturbations driven by regular or semi-regular extra-terrestrial bombardment, the production of Earth's continental crust is generally regarded as a function of planetary differentiation driven by i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1045a5062a0af156d4df182e6f998551
https://doi.org/10.1130/g50513.1

TOI-2076 and TOI-1807: Two young, comoving planetary systems within 50 pc identified by TESS that are ideal candidates for further follow-up

Autor: Hedges, Christina, Hughes, Alex, Zhou, George, David, Trevor J., Becker, Juliette, Giacalone, Steven, Vanderburg, Andrew, Rodriguez, Joseph E., Bieryla, Allyson, Wirth, Christopher, Atherton, Shaun, Fetherolf, Tara, Collins, Karen A., Price-Whelan, Adrian M., Bedell, Megan, Quinn, Samuel N., Gan, Tianjun, Ricker, George R., Latham, David W., Vanderspek, Roland K., Seager, Sara, Winn, Joshua N., Jenkins, Jon M., Buchhave, Lars A., Rasmussen, René, Kielkopf, John F., Schwarz, Richard P., Dressing, Courtney D., Gonzales, Erica J., Crossfield, Ian J.M., Matthews, Elisabeth C., Jensen, Eric L.N., Furlan, Elise, Gnilka, Crystal L., Howell, Steve B., Lester, Kathryn V., Scott, Nicholas J., Feliz, Dax L., Lund, Michael B., Siverd, Robert J., Stevens, Daniel J., Narita, N., Fukui, A., Murgas, F., Palle, Enric, Sutton, Phil J., Stassun, Keivan G., Bouma, Luke G., Vezie, Michael, Villasenor, Jesus Noel, Quintana, Elisa V., Smith, Jeffrey C.

Publikováno v: Hedges, C, Hughes, A, Zhou, G, David, T J, Becker, J, Giacalone, S, Vanderburg, A, Rodriguez, J E, Bieryla, A, Wirth, C, Atherton, S, Fetherolf, T, Collins, K A, Price-Whelan, A M, Bedell, M, Quinn, S N, Gan, T, Ricker, G R, Latham, D W, Vanderspek, R K, Seager, S, Winn, J N, Jenkins, J M, Buchhave, L A, Rasmussen, R, Kielkopf, J F, Schwarz, R P, Dressing, C D, Gonzales, E J, Crossfield, I J M, Matthews, E C, Jensen, E L N, Furlan, E, Gnilka, C L, Howell, S B, Lester, K V, Scott, N J, Feliz, D L, Lund, M B, Siverd, R J, Stevens, D J, Narita, N, Fukui, A, Murgas, F, Palle, E, Sutton, P J, Stassun, K G, Bouma, L G, Vezie, M, Villasenor, J N, Quintana, E V & Smith, J C 2021, ' TOI-2076 and TOI-1807 : Two Young, Comoving Planetary Systems within 50 pc Identified by TESS that are Ideal Candidates for Further Follow up ', Astronomical Journal, vol. 162, no. 2, 54 . https://doi.org/10.3847/1538-3881/ac06cd

We report the discovery of two planetary systems around comoving stars; TOI-2076 (TIC 27491137) and TOI-1807 (TIC 180695581). TOI-2076 is a nearby (41.9 pc) multi-planetary system orbiting a young (204$\pm$50 Myr), bright (K = 7.115 in TIC v8.1). TOI

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22bcf331df07f52342e282ac549b2820

Mean Motion Resonances With Nearby Moons: An Unlikely Origin For The Gaps Observed In The Ring Around The Exoplanet J1407b

Autor: Phil J. Sutton

With the use of numerical models, we investigate whether Mean Motion Resonances (MMR) with nearby moons to the J1407b ring system were the cause of the observed 0.0267AU wide gap located at 0.4AU. Only one location of a moon at 0.63AU (corresponding

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8d8bb289e63e07ea9096102e3778161
http://arxiv.org/abs/1902.09285

Observing the dynamic Sun : MHD waves in the chromosphere

Autor: Mooroogen, Krishna

Due to their ubiquity in the atmosphere magnetohydrodynamic waves have been theorised to play an important role in the coronal heating problem. The kink wave in particular, due to its Alfvenic qualities, is thought to be able to transport energy over

Externí odkaz: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.757322

The effects of energetic particles on radiative transfer and emission from hydrogen in solar flares

Autor: Druett, Malcolm

There are rapid increases of hard and soft X-rays (HXR, SXR) and ultraviolet (UV) emission with large Doppler blue-shifts associated with plasma up-flows observed at flare onsets accompanied by broadened chromospheric emission with large redshifts. H

Externí odkaz: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.757271