Results 71 to 80 of about 30,917 (286)

Fermi Gamma-ray Haze via Dark Matter and Millisecond Pulsars

, 2011
We study possible astrophysical and dark matter (DM) explanations for the Fermi gamma-ray haze in the Milky Way halo. As representatives of various DM models, we consider DM particles annihilating into W+W-, b-bbar, and e+e-.
Atoyan, Bell, Bezanson, Binney, Bullock, Catena, Cholis, Cordes, Dmitry Malyshev, Dobler, Faucher-Giguère, Faucher-Giguère, Finkbeiner, Font, Hooper, Ilias Cholis, Joseph D. Gelfand, Jurić, Kargaltsev, Kobayashi, Kuijken, Lorimer, Manchester, Merritt, Porter, Profumo, Rando, Story, Su, Sullivan, Zeldovich, Zirakashvili, Zolotov   +32 more
core   +1 more source

Silicified Wood‐Inspired, High‐Strength Fire‐Resistant Chitin‐Based Aerogels for Sustainable High‐Temperature Thermal Insulation

Advanced Functional Materials, EarlyView.
Inspired by natural silicified wood, a biomimetic mineralized chitin‐derived aerogel is constructed. It can withstand 81 000 times its own weight, and its backside temperature is 130.4°C after exposure to ∼1300°C butane flame for 600 s, exhibiting high‐strength, fire‐resistance, and super thermal‐insulation properties.
Kai Xu, Qihang Lv, Lubin Liu, Zhezhe Zhou, Chentao Yan, Ao Qin, Jianting Ma, Shuhui Liang, Yue Xu, Min Hong, Bin Li, Pingan Song   +11 more
wiley   +1 more source

Precise Asteroseismic Ages for the Helmi Streams

The Astrophysical Journal
The Helmi streams are remnants of a dwarf galaxy that was accreted by the Milky Way and whose stars now form a distinct kinematic and chemical substructure in the Galactic halo. Precisely age-dating these typically faint stars of extragalactic origin has
Christopher J. Lindsay, Marc Hon, J. M. Joel Ong, Rafael A. García, Dinil B. Palakkatharappil, Jie Yu, Tanda Li, Tomás Ruiz-Lara, Amina Helmi   +8 more
doaj   +1 more source

Signatures of minor mergers in the Milky Way disc I: The SEGUE stellar sample

, 2012
It is now known that minor mergers are capable of creating structure in the phase-space distribution of their host galaxy's disc. In order to search for such imprints in the Milky Way, we analyse the SEGUE F/G-dwarf and the Schuster et al. (2006) stellar
Aihara, Allende Prieto, An, An, Antoja, Antoja, Antoja, Arifyanto, Behroozi, Bensby, Bird, Bissantz, Brian W. O’Shea, Bullock, Cabrera-Lavers, Carollo, Chris W. Purcell, Cole, Conn, Conroy, Dehnen, Dehnen, Deokkeun An, Dobbs, Elmegreen, Elmegreen, Facundo A. Gómez, Fux, Gómez, Gómez, Gómez, Helmi, Helmi, Helmi, Hernquist, Høg, Ibata, Ivan Minchev, James S. Bullock, Kazantzidis, Kazantzidis, Keselman, King, Klement, Klypin, Kormendy, Lee, Lee, Lee, Lee, Levine, Majewski, Michel-Dansac, Minchev, Minchev, Minchev, Minchev, Miyamoto, Momany, Munn, Munn, Navarro, Navarro, Newberg, Nissen, Oh, Perryman, Perryman, Peñarrubia, Peñarrubia, Pohl, Purcell, Quillen, Quillen, Quinn, Salim, Schlesinger, Schuster, Schönrich, Smolinski, Timothy C. Beers, Tutukov, Villalobos, Wylie-de Boer, Yanny, Yanny, Young Sun Lee, Younger, Álvaro Villalobos   +88 more
core   +1 more source

Stellar halos in Illustris: probing the histories of Milky Way-mass galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
13 pages, 12 ...
Lydia M Elias, Laura V Sales, Peter Creasey, Michael C Cooper, James S Bullock, R Michael Rich, Lars Hernquist   +6 more
openaire   +2 more sources

Mechanical and Electrical Phenotype of hiPSC‐Cardiomyocytes on Fibronectin‐Based Hydrogels

Advanced Healthcare Materials, EarlyView.
We introduce fibronectin‐based PEG hydrogels with controlled rigidity to enable the culture of iPSC‐derived cardiomyocytes. These substrates offer an alternative to the current culture of these cells on fibronectin‐coated glass, providing enhanced structural and functional behavior. The system provides a more physiologically relevant platform to assess
Ana Da Silva Costa, Lineta Stonkute, Sara Trujillo, Mariana Azevedo Gonzalez Oliva, Francis Burton, Matthew J. Dalby, Oana Dobre, Godfrey Smith, Manuel Salmeron‐Sanchez   +8 more
wiley   +1 more source

Metallicity and α-abundance for 48 Million Stars in Low-extinction Regions in the Milky Way

The Astrophysical Journal
We estimate ([M/H], [ α /M]) for 48 million giants and dwarfs in low-dust extinction regions from the Gaia DR3 XP spectra by using tree-based machine learning models trained on APOGEE DR17 and a metal-poor star sample from Li et al.
Kohei Hattori
doaj   +1 more source

Mapping the stellar structure of the Milky Way thick disk and halo using SEGUE photometry

, 2010
We map the stellar structure of the Galactic thick disk and halo by applying color-magnitude diagram (CMD) fitting to photometric data from the SEGUE survey, allowing, for the first time, a comprehensive analysis of their structure at both high and low ...
Abazajian, Andrew E. Dolphin, Beers, Bell, Belokurov, Belokurov, Benjamin, Bonifacio, Bovy, Brian Yanny, Chiba, de Jong, Gilmore, Grillmair, Gunn, Gunn, Hans-Walter Rix, Hogg, Ivezić, Jelte T. A. de Jong, Jurić, Kapteyn, Kazantzidis, Kroupa, Lupton, Majewski, Martin, Newberg, Nicolas F. Martin, Padmanabhan, Pier, Schlegel, Sesar, Sesar, Siegel, Skrutskie, Smith, Stoughton, Timothy C. Beers, Vallée, Yanny, Yanny, Yanny, York, Younger   +44 more
core   +1 more source

Multidimensional Cellular Micro‐Compartments to Model Invasive Lobular Carcinoma Dormancy

Advanced Healthcare Materials, EarlyView.
Invasive lobular carcinoma (ILC) is an understudied subtype of breast cancer that is susceptible to late recurrences. In this study, micro‐compartmentalization techniques spanning multiple dimensions, including 2D, pseudo‐3D, and 3D, are integrated to uncover the mechanisms underlying ILC dormancy, revealing the central role of p27Kip1.
Xilal Y. Rima, Sarmila Majumder, Divya S. Patel, Chunyu Hu, Hong Li, Xin Huang, Kim Truc Nguyen, Jacob Doon‐Ralls, Chiranth K. Nagaraj, Mangesh D. Hade, Setty M. Magaña, Eswar Shankar, Xiaoli Zhang, Daniel G. Stover, Bhuvaneswari Ramaswamy, Eduardo Reátegui   +15 more
wiley   +1 more source

Detection of Multiple Phase Space Overdensities of GSE Stars by Orbit Integration

The Astrophysical Journal, 2023
In N -body simulations, nearly radial mergers can form shell-like overdensities in the sky position and phase space ( r − v _r ) due to the combination of dynamical friction and tidal stripping.
Wenbo Wu, Gang Zhao, Jiang Chang, Xiang-Xiang Xue, Yuqin Chen, Chengdong Li, Xianhao Ye, Chengqun Yang   +7 more
doaj   +1 more source