Results 101 to 110 of about 3,773,384 (268)

The Interaction between Stars and Past AGN Disk: Possible Explanation for the Kinematic Distributions of S-stars in the Galactic Center

The Astrophysical Journal
The presence of young stars, aged around several million years and situated within the range of ∼0.04–1 pc from our Galactic center raises a question about their origins and dynamical evolutions.
Xiao Fan, Qingwen Wu, Jiancheng Wu, Xiangli Lei, Mengye Wang, Fulin Li   +5 more
doaj   +1 more source

Finding Radio Pulsars in and Beyond the Galactic Center [PDF]

, 1996
Radio-wave scattering is enhanced dramatically for Galactic center sources in a region with radius >~ 15 arc min. Using scattering from Sgr A* and other sources, we show that pulse broadening for pulsars in the Galactic center is {\em at least} 6.3 \nu^{-
Anantharamaiah K. R., Bertelli G., Biggs J., Catchpole R. M., Clifton T. R., Davies R. D., Fabian A. C., Gray A. D., Izvekova V. A., James M. Cordes, Johnston S., Kahn F. D., Kramer M., Lorimer D. R., Lorimer D. R., Lyne A. G., Lyne A. G., Malofeev V. M., Meynet G., Narayan R., Predehl P., Schwarz U. J., Seiradakis J. H., T. Joseph W. Lazio, Wex N., Wilkinson P. N., Williamson I. P., Williamson I. P., Xilouris K. M.   +28 more
core   +2 more sources

Phosphorus-bearing molecules in the Galactic Center [PDF]

, 2017
Phosphorus (P) is one of the essential elements for life due to its central role in biochemical processes. Recent searches have shown that P-bearing molecules (in particular PN and PO) are present in star-forming regions, although their formation routes ...
V. Rivilla, I. Jímenez-Serra, S. Zeng, S. Martín, Jesús Martín-Pintado, J. Armijos-Abendaño, S. Viti, R. Aladro, D. Riquelme, M. Requena-Torres, D. Qu'enard, F. Fontani, M. Beltr'an   +12 more
semanticscholar   +1 more source

Galactic Center Observations with CTAO LST-1 [PDF]

EPJ Web of Conferences
Very-high-energy gamma-ray observations of the central part of the Milky Way Galaxy allow for morphological study of cosmic-ray propagation around the supermassive black hole Sgr A*. An interpretation of the diffuse gamma-ray component, which spans a few
Abe Shotaro, Abhishek, Doro Michele, Inada Tomohiro, Strzys Marcel, Teshima Masahiro, Vovk Ievgen   +6 more
doaj   +1 more source

Ices in the Galactic Center? [PDF]

Journal of Physics: Conference Series, 2012
We present for the first time, an infrared data-cube of the central parsec of our Galaxy in the 2.8 to 4.2 micron range. This spectral band (the L-band) harbors important signatures of the interstellar and circumstellar medium, since the water ice absorption feature at 3 micron traces the dense medium and the hydrocarbon absorption at 3.4 micron is ...
Koralka Mužić, Andreas Eckart, J. Moultaka   +2 more
openaire   +1 more source

Key questions about Galactic Center dynamics [PDF]

, 2010
I discuss four key questions about Galactic Center dynamics, their implications for understanding both the environment of the Galactic MBH and galactic nuclei in general, and the progress made in addressing them.
Alexander, Tal
core  

Invisible Higgs Decays to Hooperons in the NMSSM

, 2015
The galactic center excess of gamma ray photons can be naturally explained by light Majorana fermions in combination with a pseudoscalar mediator. The NMSSM provides exactly these ingredients.
Butter, Anja, Henrot-Versillé, Sophie, Lafaye, Rémi, Plehn, Tilman, Rauch, Michael, Zerwas, Dirk   +5 more
core   +3 more sources

TEV GAMMA-RAY OBSERVATIONS OF THE GALACTIC CENTER RIDGE BY VERITAS [PDF]

, 2016
The Galactic Center ridge has been observed extensively in the past by both GeV and TeV gamma-ray instruments revealing a wealth of structure, including a diffuse component and the point sources G0.9+0.1 (a composite supernova remnant) and Sgr A ...
A. Archer, W. Benbow, R. Bird, M. Buchovecky, J. Buckley, V. Bugaev, K. Byrum, J. Cardenzana, M. Cerruti, Xian Chen, L. Ciupik, E. Collins-Hughes, M. Connolly, J. Eisch, A. Falcone, Q. Feng, J. Finley, H. Fleischhack, A. Flinders, L. Fortson, A. Furniss, G. Gillanders, S. Griffin, J. Grube, G. Gyuk, N. Håkansson, D. Hanna, J. Holder, T. Humensky, M. Hütten, C. Johnson, P. Kaaret, P. Kar, N. Kelley-Hoskins, M. Kertzman, D. Kieda, M. Krause, F. Krennrich, Sunil Kumar, M. Lang, S. McArthur, A. McCann, K. Meagher, J. Millis, P. Moriarty, R. Mukherjee, D. Nieto, R. Ong, N. Park, V. Pelassa, M. Pohl, A. Popkow, E. Pueschel, J. Quinn, K. Ragan, G. Ratliff, P. Reynolds, G. Richards, E. Roache, J. Rousselle, M. Santander, G. Sembroski, K. Shahinyan, A. Smith, D. Staszak, I. Telezhinsky, J. Tucci, J. Tyler, V. Vassiliev, S. Wakely, O. Weiner, A. Weinstein, A. Wilhelm, D. Williams, B. Zitzer, F. Yusef-Zadeh   +75 more
semanticscholar   +1 more source

Turbulent Origin of the Galactic-Center Magnetic Field: Nonthermal Radio Filaments

, 2005
A great deal of study has been carried out over the last twenty years on the origin of the magnetic activity in the Galactic center. One of the most popular hypotheses assumes milli-Gauss magnetic field with poloidal geometry, pervading the inner few ...
Anantharamaiah K. R., Batchelor G. K., Farhad Yusef-Zadeh, Geballe T. R., Kazantsev A. P., Koyama K., Roy S., Serabyn E., Sofue Y., Stanislav Boldyrev, Uchida K. I., Zel'dovich Ya. B.   +11 more
core   +2 more sources

CLUSTERING OF LOCAL GROUP DISTANCES: PUBLICATION BIAS OR CORRELATED MEASUREMENTS? IV. THE GALACTIC CENTER [PDF]

, 2016
Aiming at deriving a statistically well-justified Galactic Center distance, R0, and reducing any occurrence of publication bias, we compiled the most comprehensive and most complete database of Galactic Center distances available to date, containing 273 ...
R. de Grijs, G. Bono
semanticscholar   +1 more source