Results 121 to 130 of about 3,265,657 (290)

Are There Higher Electron Densities in Narrow Emission Line Regions of Type-1 AGNs than in Type-2 AGNs?

The Astrophysical Journal
In the manuscript, we check properties of electron densities n _e traced by flux ratio R _sii of [S ii ] λ 6716 Å to [S ii ] λ 6731 Å in narrow emission line regions (NLRs) between Type-1 active galactic nucleus (AGN) and Type-2 AGN in SDSS Data Release ...
XueGuang Zhang
doaj   +1 more source

The complex relationships between active galactic nuclei, bars, and bulges

Astronomy & Astrophysics
Context. Via scaling relations, it is well known that active galactic nuclei (AGNs) and bulges are linked. This link was thought to be driven by mergers, but recent studies show that secular processes are the dominant mechanism of supermassive black hole
Garland I. L., Best H., Fortson L. F., Géron T., Lintott C. J., O’Ryan D., Simmons B. D., Smethurst R. J., Viskotová M., Walmsley M., Werner N., Zajaček M.   +11 more
doaj   +1 more source

Ecological Filtering by Tuber Compartments Shapes Stable Core Microbiomes That Underpin Potato Plant Growth Across Environments

Plant, Cell &Environment, EarlyView.
ABSTRACT Harnessing plant microbiomes for sustainable agriculture requires understanding not only whether they can boost crop performance, but also how ecological processes govern their assembly, stability, and functional contributions across environments.
Yizhu Qiao, Junqing Qiao, Roeland L. Berendsen, Xu Cheng, Corné M.J. Pieterse, Yang Song   +5 more
wiley   +1 more source

Euclid: Quick Data Release (Q1) – Dual active galactic nuclei in low-mass galaxies★

Astronomy & Astrophysics
Dual active galactic nuclei (AGNs) are expected in hierarchical galaxy evolution models, in which low-mass galaxies merge to build more massive ones. While observational evidence for dual AGNs is growing in massive galaxies, no clear detection has yet ...
Mezcua M., Laloux B., Scialpi M., Siudek M., Eróstegui A., Ricci F., Matamoro Zatarain T., Visser S., Rottgering H. J. A., Gutierrez C. M., Feltre A., Bisigello L., Saulder C., Ulivi L., Knapen J. H., Domínguez Sánchez H., Zamorani G., Rubinur K., Calhau J., Spinoglio L., Shankar F., Stern D., Pucha R., Viitanen A., Altieri B., Andreon S., Auricchio N., Baldi M., Bardelli S., Battaglia P., Biviano A., Brescia M., Camera S., Cañas-Herrera G., Capobianco V., Carbone C., Carretero J., Castellano M., Castignani G., Cavuoti S., Chambers K. C., Cimatti A., Colodro-Conde C., Congedo G., Conselice C. J., Conversi L., Copin Y., Courbin F., Courtois H. M., Cropper M., Degaudenzi H., De Lucia G., Dolding C., Dole H., Dubath F., Dupac X., Farina M., Farinelli R., Faustini F., Ferriol S., Frailis M., Franceschi E., Fumana M., Galeotta S., George K., Gillis B., Giocoli C., Gracia-Carpio J., Grazian A., Grupp F., Haugan S. V. H., Hoar J., Hoekstra H., Holmes W., Hook I. M., Hormuth F., Hornstrup A., Jahnke K., Jhabvala M., Kermiche S., Kubik B., Kümmel M., Kunz M., Kurki-Suonio H., Le Brun A. M. C., Ligori S., Lilje P. B., Lindholm V., Lloro I., Mainetti G., Maino D., Maiorano E., Mansutti O., Marggraf O., Martinelli M., Martinet N., Marulli F., Massey R. J., Medinaceli E., Mei S., Mellier Y., Meneghetti M., Merlin E., Meylan G., Mora A., Moresco M., Moscardini L., Neissner C., Nichol R. C., Niemi S.-M., Padilla C., Paltani S., Pasian F., Pedersen K., Percival W. J., Pettorino V., Pires S., Polenta G., Poncet M., Popa L. A., Pozzetti L., Raison F., Renzi A., Rhodes J., Riccio G., Romelli E., Roncarelli M., Rossetti E., Rusholme B., Saglia R., Sakr Z., Sapone D., Sartoris B., Sauvage M., Schirmer M., Schneider P., Secroun A., Seidel G., Serrano S., Sihvola E., Simon P., Sirignano C., Sirri G., Stanco L., Steinwagner J., Tallada-Crespí P., Taylor A. N., Tereno I., Tessore N., Toft S., Toledo-Moreo R., Torradeflot F., Tutusaus I., Valenziano L., Valiviita J., Vassallo T., Wang Y., Weller J., Zacchei A., Zerbi F. M., Zinchenko I. A., Zucca E., García-Bellido J., Huertas-Company M., Macias-Perez J., Martín-Fleitas J., Scottez V.   +166 more
doaj   +1 more source

Simulations All the Way Up! An Atheist's Response to the Fine‐Tuning Argument

Analytic Philosophy, EarlyView.
ABSTRACT So the Fine‐tuning Argument goes, because it is so unlikely for the physical constants of the laws of nature to have taken the values that they in fact take, we should significantly raise our credence that God exists. Simulation Arguments argue that our world might be (or, in stronger versions, that it probably is) a mere computer simulation ...
Nikk Effingham
wiley   +1 more source

Measuring the star formation rate density from CNOC2 [PDF]

, 2006
This thesis charts the evolution of the Universal Star Formation Rate Density (SFRD) across the redshift range 0.2 < z < 0.6, using the 2nd Canadian Network for Observational Cosmology Survey (CN0C2).
Whitaker, Richard James
core  

Broad-line Regions behind Haze: The Intrinsic Shape of the Brγ Line and Its Origin in a Type 1 Seyfert Galaxy

The Astrophysical Journal
The broad-line region (BLR) of active galactic nuclei is an essential component, yet its small size keeps its origin, structure, and kinematics uncertain.
Keiichi Wada, Tohru Nagao, Taro Shimizu, Daryl Joe D. Santos, Jinyi Shangguan, Richard Davies   +5 more
doaj   +1 more source

Near-infrared diagnostic diagrams of the gas ionization sources in nearby galaxies: A JWST NIRSpec view

Astronomy & Astrophysics
Context. Tracing the origin of the gas emission lines in galaxies can prove challenging in certain cases. Buried active galactic nuclei (AGNs) and obscured young stellar clusters pose significant obstacles with respect to traditional optical diagnostic ...
Costa-Souza José Henrique, Colina Luis, Riffel Rogemar A., Arribas Santiago, Perna Michele, Pereira-Santaella Miguel, García-Bernete Ismael, Martín Montserrat Villar, Dors Oli L.   +8 more
doaj   +1 more source

On Our Cosmic (In)significance

Ratio, EarlyView.
ABSTRACT This article discusses three interpretations of cosmic significance, all of which reveal something important about the notion of significance. Along the way, it proposes a unified view of significance by combining elements of each of the views.
Oskari Sivula
wiley   +1 more source

Utopia Remembers: The Soviet Past in the Imagined Communist Future

The Russian Review, EarlyView.
Abstract After a twenty‐five‐year hiatus, the reappearance of utopian literature in 1957 prompted Soviet literary watchdogs to corral the subgenre into an ideologically‐acceptable mold. A key requirement was for future generations to be depicted as reverently commemorating the past.
Antony Kalashnikov
wiley   +1 more source