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Showing 1 to 12 of 29 entries
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Little or no solar wind enters Venus' atmosphere at solar minimum.

Nature

Zhang TL, Delva M, Baumjohann W, Auster HU, Carr C, Russell CT, Barabash S, Balikhin M, Kudela K, Berghofer G, Biernat HK, Lammer H, Lichtenegger H, Magnes W, Nakamura R, Schwingenschuh K, Volwerk M, Vörös Z, Zambelli W, Fornacon KH, Glassmeier KH, Richter I, Balogh A, Schwarzl H, Pope SA, Shi JK, Wang C, Motschmann U, Lebreton JP.
PMID: 18046399
Nature. 2007 Nov 29;450(7170):654-6. doi: 10.1038/nature06026.

Venus has no significant internal magnetic field, which allows the solar wind to interact directly with its atmosphere. A field is induced in this interaction, which partially shields the atmosphere, but we have no knowledge of how effective that...

Magnetic reconnection in the near Venusian magnetotail.

Science (New York, N.Y.)

Zhang TL, Lu QM, Baumjohann W, Russell CT, Fedorov A, Barabash S, Coates AJ, Du AM, Cao JB, Nakamura R, Teh WL, Wang RS, Dou XK, Wang S, Glassmeier KH, Auster HU, Balikhin M.
PMID: 22491094
Science. 2012 May 04;336(6081):567-70. doi: 10.1126/science.1217013. Epub 2012 Apr 05.

Observations with the Venus Express magnetometer and low-energy particle detector revealed magnetic field and plasma behavior in the near-Venus wake that is symptomatic of magnetic reconnection, a process that occurs in Earth's magnetotail but is not expected in the...

Electron-scale dynamics of the diffusion region during symmetric magnetic reconnection in space.

Science (New York, N.Y.)

Torbert RB, Burch JL, Phan TD, Hesse M, Argall MR, Shuster J, Ergun RE, Alm L, Nakamura R, Genestreti KJ, Gershman DJ, Paterson WR, Turner DL, Cohen I, Giles BL, Pollock CJ, Wang S, Chen LJ, Stawarz JE, Eastwood JP, Hwang KJ, Farrugia C, Dors I, Vaith H, Mouikis C, Ardakani A, Mauk BH, Fuselier SA, Russell CT, Strangeway RJ, Moore TE, Drake JF, Shay MA, Khotyaintsev YV, Lindqvist PA, Baumjohann W, Wilder FD, Ahmadi N, Dorelli JC, Avanov LA, Oka M, Baker DN, Fennell JF, Blake JB, Jaynes AN, Le Contel O, Petrinec SM, Lavraud B, Saito Y.
PMID: 30442767
Science. 2018 Dec 21;362(6421):1391-1395. doi: 10.1126/science.aat2998. Epub 2018 Nov 15.

Magnetic reconnection is an energy conversion process that occurs in many astrophysical contexts including Earth's magnetosphere, where the process can be investigated in situ by spacecraft. On 11 July 2017, the four Magnetospheric Multiscale spacecraft encountered a reconnection site...

3D Tissue Explant and Single-Cell Suspension Organoid Culture Systems for Ex Vivo Drug Testing on Human Tonsil-Derived T Follicular Helper Cells.

Methods in molecular biology (Clifton, N.J.)

Schmidt A, Baumjohann D.
PMID: 34802138
Methods Mol Biol. 2022;2380:267-288. doi: 10.1007/978-1-0716-1736-6_22.

Research on the human immune system is often restricted to peripheral blood cells. However, these cells can be different from those found in secondary lymphoid organs. For instance, specialized T and B cells that are localized in germinal centers...

Multiscale Currents Observed by MMS in the Flow Braking Region.

Journal of geophysical research. Space physics

Nakamura R, Varsani A, Genestreti KJ, Le Contel O, Nakamura T, Baumjohann W, Nagai T, Artemyev A, Birn J, Sergeev VA, Apatenkov S, Ergun RE, Fuselier SA, Gershman DJ, Giles BJ, Khotyaintsev YV, Lindqvist PA, Magnes W, Mauk B, Petrukovich A, Russell CT, Stawarz J, Strangeway RJ, Anderson B, Burch JL, Bromund KR, Cohen I, Fischer D, Jaynes A, Kepko L, Le G, Plaschke F, Reeves G, Singer HJ, Slavin JA, Torbert RB, Turner DL.
PMID: 29938154
J Geophys Res Space Phys. 2018 Feb;123(2):1260-1278. doi: 10.1002/2017JA024686. Epub 2018 Feb 20.

We present characteristics of current layers in the off-equatorial near-Earth plasma sheet boundary observed with high time-resolution measurements from the Magnetospheric Multiscale mission during an intense substorm associated with multiple dipolarizations. The four Magnetospheric Multiscale spacecraft, separated by distances...

Possible increased critical temperature T.

Scientific reports

Treumann RA, Baumjohann W.
PMID: 31316131
Sci Rep. 2019 Jul 17;9(1):10339. doi: 10.1038/s41598-019-46806-4.

A finite thermal anisotropy, if maintained for times longer than thermal relaxation times, may have a positive effect on the critical temperature in Bose-Einstein condensation of a dilute boson gas not in thermal equilibrium or quasi-particle fermi fluid consisting...

New features of electron phase space holes observed by the THEMIS mission.

Physical review letters

Andersson L, Ergun RE, Tao J, Roux A, Lecontel O, Angelopoulos V, Bonnell J, McFadden JP, Larson DE, Eriksson S, Johansson T, Cully CM, Newman DL, Newman DN, Goldman MV, Glassmeier KH, Baumjohann W.
PMID: 19658872
Phys Rev Lett. 2009 Jun 05;102(22):225004. doi: 10.1103/PhysRevLett.102.225004. Epub 2009 Jun 05.

Observations of electron phase-space holes (EHs) in Earth's plasma sheet by the THEMIS satellites include the first detection of a magnetic perturbation (deltaB_{ parallel}) parallel to the ambient magnetic field (B0). EHs with a detectable deltaB_{ parallel} have several...

Electron-scale measurements of magnetic reconnection in space.

Science (New York, N.Y.)

Burch JL, Torbert RB, Phan TD, Chen LJ, Moore TE, Ergun RE, Eastwood JP, Gershman DJ, Cassak PA, Argall MR, Wang S, Hesse M, Pollock CJ, Giles BL, Nakamura R, Mauk BH, Fuselier SA, Russell CT, Strangeway RJ, Drake JF, Shay MA, Khotyaintsev YV, Lindqvist PA, Marklund G, Wilder FD, Young DT, Torkar K, Goldstein J, Dorelli JC, Avanov LA, Oka M, Baker DN, Jaynes AN, Goodrich KA, Cohen IJ, Turner DL, Fennell JF, Blake JB, Clemmons J, Goldman M, Newman D, Petrinec SM, Trattner KJ, Lavraud B, Reiff PH, Baumjohann W, Magnes W, Steller M, Lewis W, Saito Y, Coffey V, Chandler M.
PMID: 27174677
Science. 2016 Jun 03;352(6290):aaf2939. doi: 10.1126/science.aaf2939. Epub 2016 May 12.

Magnetic reconnection is a fundamental physical process in plasmas whereby stored magnetic energy is converted into heat and kinetic energy of charged particles. Reconnection occurs in many astrophysical plasma environments and in laboratory plasmas. Using measurements with very high...

A Note on the Entropy Force in Kinetic Theory and Black Holes.

Entropy (Basel, Switzerland)

Treumann RA, Baumjohann W.
PMID: 33267430
Entropy (Basel). 2019 Jul 23;21(7). doi: 10.3390/e21070716.

The entropy force is the collective effect of inhomogeneity in disorder in a statistical many particle system. We demonstrate its presumable effect on one particular astrophysical object, the black hole. We then derive the kinetic equations of a large...

Dynamic changes in circulating T follicular helper cell composition predict neutralising antibody responses after yellow fever vaccination.

Clinical & translational immunology

Huber JE, Ahlfeld J, Scheck MK, Zaucha M, Witter K, Lehmann L, Karimzadeh H, Pritsch M, Hoelscher M, von Sonnenburg F, Dick A, Barba-Spaeth G, Krug AB, Rothenfußer S, Baumjohann D.
PMID: 32419947
Clin Transl Immunology. 2020 May 13;9(5):e1129. doi: 10.1002/cti2.1129. eCollection 2020 May.

OBJECTIVES: T follicular helper (Tfh) cells are the principal T helper cell subset that provides help to B cells for potent antibody responses against various pathogens. In this study, we took advantage of the live-attenuated yellow fever virus (YFV)...

T follicular helper cells: linking cancer immunotherapy and immune-related adverse events.

Journal for immunotherapy of cancer

Baumjohann D, Brossart P.
PMID: 34112740
J Immunother Cancer. 2021 Jun;9(6). doi: 10.1136/jitc-2021-002588.

Cancer immunotherapy utilizing immune checkpoint inhibitors (ICIs) has revolutionized the treatment of numerous cancer types. As the underlying mechanism of these treatments lies in the interference with inhibitory signals that usually impair potent antitumor immunity, for example, cytotoxic T-lymphocyte-associated...

A comparative study of dipolarization fronts at MMS and Cluster.

Geophysical research letters

Schmid D, Nakamura R, Volwerk M, Plaschke F, Narita Y, Baumjohann W, Magnes W, Fischer D, Eichelberger HU, Torbert RB, Russell CT, Strangeway RJ, Leinweber HK, Le G, Bromund KR, Anderson BJ, Slavin JA, Kepko EL.
PMID: 27478286
Geophys Res Lett. 2016 Jun 28;43(12):6012-6019. doi: 10.1002/2016GL069520. Epub 2016 Jun 25.

We present a statistical study of dipolarization fronts (DFs), using magnetic field data from MMS and Cluster, at radial distances below 12

Showing 1 to 12 of 29 entries