Results 81 to 90 of about 55,540 (200)

Grey‐Body Factors and Absorption Cross‐Sections of Scalar and Dirac Fields in the Vicinity of Dilaton‐De Sitter Black Hole

Fortschritte der Physik, Volume 74, Issue 1, January 2026.
Abstract The propagation of a massive scalar field and a massless Dirac field in the geometry of a dilaton–de Sitter black hole is investigated. Starting from the covariant perturbation equations, the corresponding effective potentials are presented and their dependence on the dilaton charge, field mass, and cosmological constant is analyzed. Using the
Bekir Can Lütfüoğlu
wiley   +1 more source

ASTROPHYSICAL IMPLICATIONS OF THE BINARY BLACK HOLE MERGER GW150914 [PDF]

The Astrophysical Journal Letters, 2016
ABSTRACT The discovery of the gravitational-wave (GW) source GW150914 with the Advanced LIGO detectors provides the first observational evidence for the existence of binary black hole (BH) systems that inspiral and merge within the age of the universe.
Abbott, B. P., Abbott, R., Abbott, T. D., Abernathy, M. R., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R. X., Adya, V. B., Affeldt, C., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O. D., Aiello, L., Ain, A., Ajith, P., Allen, B., Allocca, A., Altin, P. A., Anderson, S. B., Anderson, W. G., Arai, K., Araya, M. C., Arceneaux, C. C., Areeda, J. S., Arnaud, N., Arun, K. G., Ascenzi, S., Ashton, G., Ast, M., Aston, S. M., Astone, P., Aufmuth, P., Aulbert, C., Babak, S., Bacon, P., Bader, M. K. M., Baker, P. T., Baldaccini, F., Ballardin, G., Ballmer, S. W., Barayoga, J. C., Barclay, S. E., Barish, B. C., Barker, D., Barone, F., Barr, B., Barsotti, L., Barsuglia, M., Barta, D., Bartlett, J., Bartos, I., Bassiri, R., Basti, A., Batch, J. C., Baune, C., Bavigadda, V., Bazzan, M., Behnke, B., Bejger, M., Belczynski, C., Bell, A. S., Bell, C. J., Berger, B. K., Bergman, J., Bergmann, G., Berry, C. P. L., Bersanetti, D., Bertolini, A., Betzwieser, J., Bhagwat, S., Bhandare, R., Bilenko, I. A., Billingsley, G., Birch, J., Birney, R., Biscans, S., Bisht, A., Bitossi, M., Biwer, C., Bizouard, M. A., Blackburn, J. K., Blair, C. D., Blair, D. G., Blair, R. M., Bloemen, S., Bock, O., Bodiya, T. P., Boer, M., Bogaert, G., Bogan, C., Bohe, A., Bojtos, P., Bond, C., Bondu, F., Bonnand, R., Boom, B. A., Bork, R., Boschi, V., Bose, S., Bouffanais, Y., Bozzi, A., Bradaschia, C., Brady, P. R., Braginsky, V. B., Branchesi, M., Brau, J. E., Briant, T., Brillet, A., Brinkmann, M., Brisson, V., Brockill, P., Brooks, A. F., Brown, D. A., Brown, D. D., Brown, N. M., Buchanan, C. C., Buikema, A., Bulik, T., Bulten, H. J., Buonanno, A., Buskulic, D., Buy, C., Byer, R. L., Cadonati, L., Cagnoli, G., Cahillane, C., Calderón Bustillo, J., Callister, T., Calloni, E., Camp, J. B., Cannon, K. C., Cao, J., Capano, C. D., Capocasa, E., Carbognani, F., Caride, S., Casanueva Diaz, J., Casentini, C., Caudill, S., Cavaglià, M., Cavalier, F., Cavalieri, R., Cella, G., Cepeda, C., Cerboni Baiardi, L., Cerretani, G., Cesarini, E., Chakraborty, R., Chalermsongsak, T., Chamberlin, S. J., Chan, M., Chao, S., Charlton, P., Chassande-Mottin, E., Chen, H. Y., Chen, Y., Cheng, C., Chincarini, A., Chiummo, A., Cho, H. S., Cho, M., Chow, J. H., Christensen, N., Chu, Q., Chua, S., Chung, S., Ciani, G., Clara, F., Clark, J. A., Cleva, F., Coccia, E., Cohadon, P. -F., Colla, A., Collette, C. G., Cominsky, L., Constancio, M., Jr., Conte, A., Conti, L., Cook, D., Corbitt, T. R., Cornish, N., Corsi, A., Cortese, S., Costa, C. A., Coughlin, M. W., Coughlin, S. B., Coulon, J. -P., Countryman, S. T., Couvares, P., Cowan, E. E., Coward, D. M., Cowart, M. J., Coyne, D. C., Coyne, R., Craig, K., Creighton, J. D. E., Cumming, A., Cunningham, L., Cuoco, E., Danilishin, S. L., Daw, E. J., Degallaix, J., De Laurentis, M., Deléglise, S., Del Pozzo, W., Denker, T., Dent, T., Di Pace, S., Di Palma, I., Di Virgilio, A., Dolique, V., Drago, M., Du, Z., Eichholz, J., Fafone, V., Fairhurst, S., Fang, Q., Farr, B., Favata, M., Ferrante, I., Ferreira, E. C., Fidecaro, F., Frasca, S., Frei, Z., Freise, A., Frey, R., Fulda, P., Garufi, F., Gatto, A., Gendre, B., Gennai, A., Gergely, L., Ghosh, Archisman, Goetz, E., González, G., Granata, M., Greco, G., Green, A. C., Groot, P., Guidi, G. M., Hall, E. D., Hammond, G., Harms, J., Harry, I. W., Haughian, K., Heidmann, A., Hendry, M., Heng, I. S., Heurs, M., Hild, S., Hollitt, S. E., Holz, D. E., Hosken, D. J., Hough, J., Howell, E. J., Hu, Y. M., Huerta, E. A., Husa, S., Isa, H. N., Iyer, B. R., Jacqmin, T., Jaranowski, P., Ju, L., K, Haris, Kalaghatgi, C. V., Kandhasamy, S., Kang, G., Karki, S., Kéfélian, F., Keitel, D., Key, J. S., Khalaidovski, A., Khan, S., Koehlenbeck, S. M., Korobko, M., Kowalska, I., Krishnan, B., Królak, A., Kumar, P., Lasky, P. D., Lazzaro, C., Leaci, P., Leavey, S., Lee, C. H., Lee, H. K., Lee, H. M., Leonardi, M., Leroy, N., Lorenzini, M., Losurdo, G., Lundgren, A. P., Majorana, E., Maksimovic, I., Mangano, V., Mantovani, M., Martin, I. W., Martynov, D. V., McClelland, D. E., Meadors, G. D., Melatos, A., Messenger, C., Mezzani, F., Miao, H., Middleton, H., Mikhailov, E. E., Mishra, C., Mitra, S., Mitselmakher, G., Montani, M., Moore, B. C., Mow-Lowry, C. M., Murphy, D. J., Murray, P. G., Naticchioni, L., Nedkova, K., Nelemans, G., Nitz, A., Oh, J. J., Oh, S. H., O'Reilly, B., O'Shaughnessy, R., Ottaway, D. J., Owen, B. J., Palomba, C., Pannarale, F., Paoletti, F., Papa, M. A., Passaquieti, R., Patricelli, B., Piccinni, O., Piergiovanni, F., Pierro, V., Pinto, I. M., Pitkin, M., Poggiani, R., Powell, J., Principe, M., Prodi, G. A., Prokhorov, L., Puppo, P., Pürrer, M., Qi, H., Qin, J., Quetschke, V., Quintero, E. A., Raab, F. J., Rapagnani, P., Raymond, V., Razzano, M., Regimbau, T., Reitze, D. H., Ricci, F., Rocchi, A., Rolland, L., Romano, R., Rosińska, D., Rowan, S., Saleem, M., Salemi, F., Sanders, J. R., Sathyaprakash, B. S., Savage, R. L., Sawadsky, A., Schmidt, P., Schutz, B. F., Scott, J., Scott, S. M., Shah, S., Shaltev, M., Shoemaker, D. H., Siellez, K., Sigg, D., Sintes, A. M., Slagmolen, B. J. J., Smith, J. R., Smith, R. J. E., Sorazu, B., Sorrentino, F., Steinke, M., Steinlechner, J., Steinlechner, S., Stevenson, S. P., Strain, K. A., STRATTA, MARIA GIULIANA, Stuver, A. L., Sun, L., Swinkels, B. L., Tacca, M., Talukder, D., Tanner, D. B., Tápai, M., Thirugnanasambandam, M. P., Thomas, M., Thrane, E., Tiwari, S., Tokmakov, K. V., Travasso, F., Tringali, M. C., Usman, S. A., van den Brand, J. F. J., van Heijningen, J. V., van Veggel, A. A., Vardaro, M., Vecchio, A., Veitch, J., Verkindt, D., Viceré, A., Vitale, S., Vocca, H., Vyatchanin, S. P., Wade, A. R., Ward, R. L., Was, M., Wen, L., Wette, K., Whelan, J. T., Whiting, B. F., Willis, J. L., Willke, B., Woan, G., Wright, J. L., Yap, M. J., Zangrando, L., Zhao, C., Zhu, X. J., Zucker, M. E., Zweizig, J.   +430 more
openaire   +28 more sources

Deep Learning‐Based Prediction of High‐Speed Solar Wind Streams: Spatio‐Temporal Dependencies in Coronal Hole Dynamics

Earth and Space Science, Volume 13, Issue 1, January 2026.
Abstract High‐speed solar wind streams (HSS), originating from coronal holes (CH), are key drivers of space weather disturbances and heliospheric dynamics. However, forecasting HSS remains challenging due to the evolving morphology of CH. In this study, we present a deep learning‐based framework that models the spatiotemporal relationship between CH ...
J. J. Abraham‐Alowonle, Amr Hamada, Moataz Abdelwahab, Kanya Kusano, Ayman Mahrous   +4 more
wiley   +1 more source

Astrophysical flows near $$f\,\,(T)$$ f ( T ) gravity black holes [PDF]

The European Physical Journal C, 2016
In this paper, we study the accretion process for fluids flowing near a black hole in the context of $f(T)$ teleparallel gravity. Specifically, by performing a dynamical analysis by a Hamiltonian system, we are able to find the sonic points. After that, we consider different isothermal test fluids in order to study the accretion process when they are ...
Ahmed, Ayyesha K., Azreg-Aïnou, Mustapha, Bahamonde, Sebastian, Capozziello, Salvatore, Jamil, Mubasher   +4 more
openaire   +5 more sources

Interpretable Machine Learning for Finding Intermediate-mass Black Holes

The Astrophysical Journal
Definitive evidence that globular clusters (GCs) host intermediate-mass black holes (IMBHs) is elusive. Machine-learning (ML) models trained on GC simulations can in principle predict IMBH host candidates based on observable features.
Mario Pasquato, Piero Trevisan, Abbas Askar, Pablo Lemos, Gaia Carenini, Michela Mapelli, Yashar Hezaveh   +6 more
doaj   +1 more source

Debye‐Scale Bipolar Structures and Their Role in the Electron Trajectory Instability at the Bow Shock

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract A number of mechanisms have been suggested to operate within the terrestrial bow shock to redistribute energy contained in the incoming solar wind flow. The majority of mechanisms involve the generation of turbulence while some are based on particle motion alone.
Simon N. Walker, Michael Gedalin, Michael A. Balikhin   +2 more
wiley   +1 more source

Observing Supermassive Black Holes across cosmic time: from phenomenology to physics

, 2015
In the last decade, a combination of high sensitivity, high spatial resolution observations and of coordinated multi-wavelength surveys has revolutionized our view of extra-galactic black hole (BH) astrophysics.
A. Akylas, A. Bongiorno, A. Cattaneo, A. Comastri, A. Lawrence, A. Lawrence, A. Lawrence, A. Lawrence, A. Marconi, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Merloni, A. Sesana, A. Soltan, A.A. Galeev, A.C. Fabian, A.C. Fabian, A.T. Steffen, A.T. Steffen, B. Chen, B.J. Sams, B.R. McNamara, C. Done, C. Jin, C. Simpson, C.D. Dermer, C.D.P. Lagos, C.J. Willott, C.J. Willott, C.M. Urry, D. Burlon, D.A. Rafferty, E. Lusso, E. Lusso, E. Treister, E. Treister, E. Treister, E. Treister, E.S. Perlman, F. Fiore, F. Franca La, F. Haardt, F. Hamann, F. Shankar, F. Vito, F. Özel, G. Ghisellini, G. Hasinger, G. Hasinger, G. Matt, G. Risaliti, G. Risaliti, G. Setti, G.H. Rieke, G.L. Granato, G.T. Richards, H. Falcke, H. Hao, H. Netzer, H. Netzer, I. Delvecchio, I. Georgantopoulos, I. Hubeny, I. Pâris, I.G. Roseboom, I.M. George, J. Buchner, J. Fritz, J. Goodman, J. Kormendy, J.-M. Wang, J.D. Schnittman, J.E. McClintock, J.H. Mayo, J.J. Condon, J.S. Dunlop, J.V. Wall, K. Iwasawa, K. Iwasawa, K. Nandra, K. Ohsuga, K.E. Whitaker, K.R.W. Tristram, K.W. Cavagnolo, L. Bîrzan, L. Danese, L.C. Ho, M. Brightman, M. Brightman, M. Brightman, M. Brusa, M. Dijkstra, M. Elitzur, M. Elvis, M. Elvis, M. Elvis, M. Gilfanov, M. Gilfanov, M. Kishimoto, M. Kishimoto, M. Kishimoto, M. Kishimoto, M. Lacy, M. Massardi, M. Nenkova, M. Schmidt, M. Volonteri, M. Volonteri, M. Young, M.A. Worsley, M.J. Hardcastle, M.S. Longair, N.I. Shakura, P. Padovani, P. Ranalli, P. Tozzi, P.F. Hopkins, P.N. Best, P.W. Guilbert, Q. Yu, R. Antonucci, R. Barvainis, R. Giacconi, R. Gilli, R. Maiolino, R. Maiolino, R. Maiolino, R. Narayan, R.A. Sunyaev, R.A. Sunyaev, R.C. Hickox, R.D. Blandford, R.H. Becker, R.J. Assef, R.J. Assef, R.P. Fender, R.R.J. Antonucci, R.S. Nemmen, S. Bianchi, S. Heinz, S. Heinz, S. Heinz, S. Kaspi, S. Sazonov, S.M. Croom, S.W. Allen, S.W. Davis, T.A. Boroson, V. Smolčić, X. Dai, Y. Juarez, Y. Ueda, Y. Ueda, Y.-F. Jiang, Z. Shang   +158 more
core   +1 more source

An Extended Amplitude Range Readout Circuit for Charged Particle Detection–BEAR 2

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Charge sensitive amplifiers (CSA) form the first stage of most detector readout circuits. The operating range of the readout circuits depends on the saturation limits of the Charge sensitive amplifiers, thereby limiting the range of the detector system as well. A number of methods have been introduced to extend the dynamic range of the readout
A. Antony Gomez, R. W. Knepper, B. M Walsh, S. G. Kanekal, F. Gautier, G. Suarez   +5 more
wiley   +1 more source

Nonlinear electrodynamics effects on the geometry, thermodynamics, and quantum dynamics of (2+1)-dimensional black holes

Nuclear Physics B
Black holes in (2+1) dimensions serve as valuable toy models for understanding key aspects of real astrophysical black holes, providing insights into quantum gravity and thermodynamic properties.
Erdem Sucu, İzzet Sakallı
doaj   +1 more source

TranQuiL: Long Range Detection and Localization of Interference in Radio Quiet Zones

Radio Science, Volume 61, Issue 1, January 2026.
Abstract Radio Quiet Zones (RQZs) have been established to prevent radio sources from causing harmful interference to sensitive radio telescopes, which study extremely faint cosmic radio waves. Even with strict regulations, such interference is growing due to the widespread use of consumer electronics, emitting in many different frequency bands ...
Atul Bansal, Mohamed Ibrahim, Kuang Yuan, Yiwen Song, Bob Iannucci, Swarun Kumar   +5 more
wiley   +1 more source