Results 61 to 70 of about 13,143 (223)

Principal Component‐Based Classification of Blazar Candidates of Uncertain Type in the 4FGL/LAT

Astronomische Nachrichten, EarlyView.
ABSTRACT We adopted principal component analysis (PCA), linear discriminant analysis (LDA), and support vector machines (SVM), to study classification for a sample of 2708 Fermi blazars: 1142 BL Lac objects (BLLs), 759 flat spectrum radio quasars (FSRQs), and 807 blazar candidates of uncertain type (BCUs).
Wen‐Xin Yang, Guo‐Hai Chen, Jing‐Tian Zhu, Hong‐Guang Wang, Denis Bastieri, Xu‐Hong Ye, Jing‐Chao Liang, De‐Xiang Wu, Jiang‐He Yang, Anton A. Strigachev, Rumen S. Bachev, Jun‐Jie Feng, Yi Liu, Jun‐Hui Fan   +13 more
wiley   +1 more source

Euclid

Astronomy & Astrophysics
High-fidelity galaxy mocks are crucial for validating analysis pipelines and for cosmological inference. In this context, the Science Pipeline at PIC (SciPIC) is a pipeline specifically designed for the fast generation of synthetic galaxy catalogues from
Gonzalez E. J., Carretero J., Baghkhani Z., Castander F. J., Fosalba P., Tallada-Crespí P., Stadel J., Potter D., Tutusaus I., Ramakrishnan S., van Heukelum M. L., Chisari N. E., Marulli F., Bolzonella M., Pozzetti L., Navarro-Gironés D., Chaves-Montero J., Parimbelli G., Manera M., Blot L., Hoffmann K., Huertas-Company M., Monaco P., Scarlata C., Breton M.-A., Li S.-S., Teyssier R., Crocce M., Congedo G., Biviano A., Hirschmann M., Pezzotta A., Hoekstra H., Percival W. J., Oesch P. A., Bowler R. A. A., Gonzalez-Perez V., Avila S., Kovács A., Altieri B., Andreon S., Auricchio N., Baccigalupi C., Baldi M., Bardelli S., Battaglia P., Branchini E., Brescia M., Camera S., Capobianco V., Carbone C., Casas S., Castellano M., Castignani G., Cavuoti S., Cimatti A., Colodro-Conde C., Conversi L., Copin Y., Courbin F., Courtois H. M., Degaudenzi H., de la Torre S., De Lucia G., Dole H., Dubath F., Dupac X., Escoffier S., Farina M., Farinelli R., Farrens S., Faustini F., Ferriol S., Finelli F., Fotopoulou S., Fourmanoit N., Frailis M., Franceschi E., Fumana M., Gabarra L., Galeotta S., George K., Gillis B., Giocoli C., Gracia-Carpio J., Grazian A., Grupp F., Guzzo L., Haugan S. V. H., Holmes W., Hormuth F., Hornstrup A., Jahnke K., Jhabvala M., Joachimi B., Kermiche S., Kiessling A., Kubik B., Kümmel M., Kunz M., Kurki-Suonio H., Le Brun A. M. C., Ligori S., Lilje P. B., Lindholm V., Lloro I., Magliocchetti M., Mainetti G., Mansutti O., Marggraf O., Martinelli M., Martinet N., Massey R. J., Mauri N., Medinaceli E., Mei S., Meneghetti M., Merlin E., Meylan G., Mora A., Moresco M., Moretti C., Moscardini L., Nakajima R., Neissner C., Niemi S.-M., Nightingale J. W., Padilla C., Paltani S., Pasian F., Pedersen K., Pettorino V., Pires S., Polenta G., Popa L. A., Raison F., Renzi A., Rhodes J., Riccio G., Romelli E., Roncarelli M., Saglia R., Sakr Z., Sánchez A. G., Sapone D., Sartoris B., Schneider P., Schrabback T., Secroun A., Serrano S., Sihvola E., Simon P., Sirignano C., Sirri G., Spurio Mancini A., Stanco L., Taylor A. N., Tereno I., Toft S., Toledo-Moreo R., Torradeflot F., Valiviita J., Vassallo T., Verdoes Kleijn G., Wang Y., Weller J., Zamorani G., Zerbi F. M., Zucca E., Allevato V., Ballardini M., Burigana C., Cabanac R., Calabrese M., Cappi A., Castro T., Escartin Vigo J. A., García-Bellido J., Macias-Perez J., Maoli R., Martín-Fleitas J., Metcalf R. B., Montoro A., Nucita A. A., Pöntinen M., Scottez V., Sereno M., Tenti M., Tucci M., Viel M., Wiesmann M., Akrami Y., Andika I. T., Angora G., Anselmi S., Archidiacono M., Atrio-Barandela F., Bazzanini L., Bel J., Bertacca D., Bethermin M., Beutler F., Blanchard A., Bonici M., Brown M. L., Bruton S., Calabro A., Camacho Quevedo B., Caro F., Carvalho C. S., Cogato F., Cooray A. R., Cucciati O., de Boer T., Desprez G., Díaz-Sánchez A., Di Domizio S., Diego J. M., Duret V., Elkhashab M. Y., Enia A., Fang Y., Finoguenov A., Franco A., Ganga K., Gasparetto T., Gavazzi R., Gaztanaga E., Giacomini F., Gianotti F., Gozaliasl G., Gruppuso A., Guidi M., Gutierrez C. M., Hall A., Hernández-Monteagudo C., Hildebrandt H., Hjorth J., Kajava J. J. E., Kang Y., Kansal V., Karagiannis D., Kiiveri K., Kim J., Kirkpatrick C. C., Koyama K., Kruk S., Lam M. C., Lattanzi M., Legrand L., Lembo M., Leroy G., Lesci G. F., Lesgourgues J., Liaudat T. I., Liu S. J., Lopez Lopez X., Manjón-García A., Mannucci F., Martins C. J. A. P., Maurin L., Miluzio M., Morgante G., Nadathur S., Naidoo K., Navarro-Alsina A., Nesseris S., Pace F., Paoletti D., Passalacqua F., Paterson K., Patrizii L., Pattison C., Paviot R., Pisani A., Pratt G. W., Quai S., Radovich M., Rojas K., Roster W., Sacquegna S., Sahlén M., Sanders D. B., Sarpa E., Schneider A., Schultheis M., Sciotti D., Sellentin E., Smith L. C., Sorce J. G., Szapudi I., Tanidis K., Tarsitano F., Testera G., Tosi S., Troja A., Uhlemann C., Valieri C., Venhola A., Vergani D., Verza G., Vielzeuf P., Vinciguerra S., von Wietersheim-Kramsta M., Walton N. A., Wright A. H., Yeung H. W.   +306 more
doaj   +1 more source

Influence of Dynamical Friction on the Unstable Manifolds of Lagrange Points in Barred Galaxies

Astronomische Nachrichten, EarlyView.
ABSTRACT Some time ago the idea has been proposed that rings and spirals in barred galaxies are shaped by the unstable manifolds of the Lagrange points sitting near the ends of the bar. The topic of the present article is an investigation of whether the numerical support for this suggestion can be improved by the inclusion of dynamical friction into ...
Christof Jung
wiley   +1 more source

Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems

Astronomische Nachrichten, EarlyView.
ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley   +1 more source

A Survey of Galaxy Pairs in the SDSS Photometric Images based on Faster-RCNN

The Astronomical Journal
Galaxy pairs hold significant importance in understanding the evolution of galaxies, and the extensive search for a large sample of galaxy pairs is meaningful.
Chen-hui Shi, Hai-feng Yang, Jiang-hui Cai, Li-chan Zhou, Yan-ting He, Mei-hong Su, Xu-jun Zhao, Ya-ling Xun   +7 more
doaj   +1 more source

Properties of Galaxies and Galaxy Clusters Associated with Quasars [PDF]

Symposium - International Astronomical Union, 1988
SummaryQuasars at redshifts < 1.0 provide good markers for discovering galaxies and galaxy clusters at moderately high redshifts. Recent results from a comprehensive program of imaging surveys of galaxies in quasar fields are summarized.
openaire   +1 more source

Targeting Amastigote and Trypomastigote Phases: Multi‐Epitope Vaccine Strategy Against Trypanosoma cruzi

Biotechnology and Applied Biochemistry, EarlyView.
ABSTRACT Effective vaccines against Trypanosoma cruzi, the causative agent of Chagas disease, are urgently needed. Here, we report the design and in silico validation of a novel multiepitope vaccine construct targeting the key surface proteins ASP‐2 and gp82. Using a comprehensive immunoinformatics pipeline, we identified and selected 38 potent T‐cell (
Maria Karolaynne da Silva, Caio Patrício de Souza Sena, Davi Serradella Vieira, Magdi E. A. Zaki, Leow Chiuan Yee, Shahina Akter, Umberto Laino Fulco, Jonas Ivan Nobre Oliveira, João Firmino Rodrigues‐Neto   +8 more
wiley   +1 more source

On the Effects of Parameters on Galaxy Properties in CAMELS and the Predictability of Ωm

The Astrophysical Journal
Recent analyses of cosmological hydrodynamic simulations from CAMELS have shown that machine learning models can predict the parameter describing the total matter content of the universe, Ω _m , from the features of a single galaxy.
Gabriella Contardo, Roberto Trotta, Serafina Di Gioia, David W. Hogg, Francisco Villaescusa-Navarro   +4 more
doaj   +1 more source

Investigation on tunnel stability considering pipe‐roof support with transparent soil technology

Deep Underground Science and Engineering, EarlyView.
This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia, Yunpeng Ji, Zhao Lu, Honghua Zhao, Limin Zhang   +4 more
wiley   +1 more source

From Halos to Galaxies. X. Decoding Galaxy SEDs with Physical Priors and Accurate Star Formation History Reconstruction

The Astrophysical Journal
The spectral energy distribution (SED) of galaxies is essential for deriving fundamental properties like stellar mass and star formation history (SFH). However, conventional methods, including both parametric and nonparametric approaches, often fail to ...
Zeyu Gao, Yingjie Peng, Kai Wang, Luis C. Ho, Alvio Renzini, Anna R. Gallazzi, Filippo Mannucci, Houjun Mo, Yipeng Jing, Xiaohu Yang, Enci Wang, Dingyi Zhao, Jing Dou, Qiusheng Gu, Cheqiu Lyu, Roberto Maiolino, Bitao Wang, Yu-Chen Wang, Bingxiao Xu, Feng Yuan, Xingye Zhu   +20 more
doaj   +1 more source