Results 71 to 80 of about 2,614 (160)

Modeling Time-variable Elemental Abundances in Coronal Loop Simulations

The Astrophysical Journal Letters
Numerous recent X-ray observations of coronal loops in both active regions and solar flares have shown clearly that elemental abundances vary with time.
Jeffrey W. Reep, John Unverferth, Will T. Barnes, Sherry Chhabra   +3 more
doaj   +1 more source

The High-Redshift Gas-Phase Mass–Metallicity Relation in FIRE-2

The Astrophysical Journal Letters
The unprecedented infrared spectroscopic capabilities of JWST have provided high-quality interstellar medium metallicity measurements and enabled characterization of the gas-phase mass–metallicity relation (MZR) for galaxies at z ≳ 5 for the first time ...
Andrew Marszewski, Guochao Sun, Claude-André Faucher-Giguère, Christopher C. Hayward, Robert Feldmann   +4 more
doaj   +1 more source

Einstein Probe Discovery of EP J182730.0−095633: A New Black Hole X-Ray Binary Candidate in Faint Outburst?

The Astrophysical Journal Letters
Black hole X-ray binaries (candidates) currently identified in our Galaxy are mainly transient sources, with the majority discovered through the detection of their X-ray outbursts.
H. Q. Cheng, Q. C. Zhao, L. Tao, H. Feng, F. Coti Zelati, H. W. Pan, A. L. Wang, Y. N. Wang, M. Y. Ge, A. Rau, A. Marino, L. Zhang, W. J. Zhang, F. Carotenuto, L. Ji, C. C. Jin, D. Y. Li, B. F. Liu, Y. Liu, E. L. Qiao, N. Rea, R. Soria, S. Wang, Z. Yan, W. Yuan, B. Zhang, G. B. Zhang, S. N. Zhang, W. D. Zhang, A. Beardmore, J. S. Bright, X. L. Chen, Z. Fan, S. Y. Fu, J. P. U. Fynbo, J. W. Hu, J. J. Jin, P. G. Jonker, A. K. H. Kong, E. Kuulkers, C. K. Li, H. L. Li, Z. K. Lin, C. X. Liu, H.-Y. Liu, J. Z. Liu, X. W. Liu, Z. Lu, C. Maitra, H. Y. Mu, C.-Y. Ng, Y. L. Qiu, S. Tinyanont, Y. Wang, S. X. Wen, S. S. Weng, Jianfeng Wu, D. Xu, Y. K. Yan, Z. Yan, Y.-P. Yang, P. Zhang, S. Zhang, Q. Zhao, Z. M. Cai, Y. Chen, Y. F. Chen, C. Z. Cui, W. W. Cui, H. B. Hu, M. H. Huang, S. M. Jia, G. Jin, Z. X. Ling, H. Q. Liu, S. L. Sun, X. J. Sun, Y. F. Xu, C. Zhang, M. Zhang, Y. H. Zhang   +80 more
doaj   +1 more source

Ubiquitous Occurrences of Multiscale Layers of Magnetic Reconnection across a Solar Wind Stream Interaction Region at 1 au

The Astrophysical Journal Letters
We present a first record of significantly enhanced occurrences of magnetic reconnection exhausts as measured by the Wind satellite across a stream interaction region (SIR) at 1 au from 2019 January 4 10:11:20 UT to 2019 January 5 09:58:00 UT.
S. Eriksson, A. Chasapis, A. Mallet, M. Swisdak   +3 more
doaj   +1 more source

Ubiquitous Small-scale Dynamics in the Slow Solar Wind Formation Region Observed by Proba-3/ASPIICS

The Astrophysical Journal Letters
The origin of the slow solar wind remains a subject of ongoing debate. Several mechanisms have been proposed: the large expansion factor of open magnetic field in the corona, interchange reconnection between open and closed field lines in streamers and ...
A. N. Zhukov, B. D. Patel, A. Debrabandere, L. Dolla, M. Mierla, S. Shestov, B. Bourgoignie, C. Jean, B. Nicula, D.-C. Talpeanu, Z. Zontou, S. Fineschi, S. Gunár, P. Lamy, H. Peter, P. Rudawy, K. Tsinganos, L. Abbo, C. Aime, V. Andretta, F. Auchère, D. Berghmans, D. Beşliu-Ionescu, S. E. Gibson, S. Giordano, P. Heinzel, B. Inhester, J. Magdalenić, C. Marqué, L. Rodriguez, M. Steślicki, L. Zangrilli, D. Galano, R. Rougeot, J. Versluys, C. Thizy   +35 more
doaj   +1 more source

LONG-TERM NEURODEVELOPMENTAL AND COGNITIVE OUTCOMES FOLLOWING PRENATAL INHIBITION OF DYRK1A BY LEUCETTINE L41 IN MOUSE MODELS OF DOWN SYNDROME

ABSTRACT Down syndrome (DS), caused by trisomy of human chromosome 21, is characterized by intellectual disability and cognitive deficits, partly driven by the overexpression of Dual-specificity tyrosine-(Y)-phosphorylation Regulated Kinase 1A (DYRK1A).
Arnaud Duchon, Claire Chevalier, Patrick Gizzi, Julien Dairou, Yann Herault   +4 more
openaire   +1 more source

Preferential Appearance of Hα Moreton Waves along Photospheric Magnetic Network Boundaries

The Astrophysical Journal Letters
Moreton waves are rare chromospheric signatures of large-scale coronal disturbances, often associated with big flares and coronal mass ejections. Using high-cadence, full-disk H α spectroscopic observations from Chinese H α Solar Explorer, together with ...
C. H. Zhai, Y. W. Ni, J. H. Guo, P. F. Chen   +3 more
doaj   +1 more source

DYRK1A inhibitors leucettines and TGF-β inhibitor additively stimulate insulin production in beta cells, organoids, and isolated mouse islets. [PDF]

PLoS One, 2023
Pucelik B, Barzowska A, Czarna A.
europepmc   +1 more source

Quartz Clouds in the Dayside Atmosphere of the Quintessential Hot Jupiter HD 189733 b

The Astrophysical Journal Letters
Recent mid-infrared observations with JWST's Mid-Infrared Instrument Low Resolution Spectrometer (MIRI LRS) have resulted in the first direct detections of absorption features from silicate clouds in the transmission spectra of two transiting exoplanets,
Julie Inglis, Natasha E. Batalha, Nikole K. Lewis, Tiffany Kataria, Heather A. Knutson, Brian M. Kilpatrick, Anna Gagnebin, Sagnick Mukherjee, Maria M. Pettyjohn, Ian J. M. Crossfield, Trevor O. Foote, David Grant, Gregory W. Henry, Maura Lally, Laura K. McKemmish, David K. Sing, Hannah R. Wakeford, Juan C. Zapata Trujillo, Robert T. Zellem   +18 more
doaj   +1 more source

Two-dimensional Radiation-hydrodynamic Simulations of Luminous Red Novae

The Astrophysical Journal Letters
Luminous red novae (LRNe) are transients associated with mass ejection during stellar mergers and common envelope evolution (CEE). LRNe have the potential to illuminate the poorly understood phases of binary evolution leading up to the CEE, during the ...
Anthony Kirilov, Diego Calderón, Ondřej Pejcha, Paul C. Duffell   +3 more
doaj   +1 more source