Results 1 to 10 of about 37,453 (224)

AGN Feedback Signatures in UV Emission

Galaxies
Supermassive black holes (SMBH) are believed to influence galaxy evolution through AGN (active galactic nuclei) feedback. Galaxy mergers are key processes of galaxy formation that lead to AGN activity and star formation.
Khatun Rubinur
exaly   +3 more sources

A complete catalogue of merger fractions in AGN hosts: No evidence for an increase in detected merger fraction with AGN luminosity

The Open Journal of Astrophysics, 2023
Despite the importance of Active Galactic Nuclei (AGN) in galaxy evolution, the mechanisms that fuel AGN activity remain poorly understood. Theoretical models suggest that major mergers of galaxies contribute strongly to AGN fuelling, particularly at ...
Carolin Villforth
doaj   +1 more source

SDSS-IV MaNGA: How Galaxy Interactions Influence Active Galactic Nuclei

The Astrophysical Journal, 2023
We present a comparative study of active galactic nuclei (AGN) between galaxy pairs and isolated galaxies with the final data release of the MaNGA integral field spectroscopic survey.
Joshua L. Steffen, Hai Fu, Joel R. Brownstein, J. M. Comerford, I. Cruz-González, Y. Sophia Dai, Niv Drory, Arran C. Gross, C. Alenka Negrete, Renbin Yan   +9 more
doaj   +1 more source

REVERBERATION MEASUREMENT OF THE INNER RADIUS OF THE DUST TORUS IN NGC 4151 DURING 2008-2013

Odessa Astronomical Publications, 2014
We investigate the correlation between infrared (JHKL) and optical (B) fluxes of the variable nucleus of the Seyfert galaxy NGC 4151 using partially published data for the last 6 years (2008-2013).
V. L. Oknyansky, N. V. Metlova, O. G. Taranova, V. I. Shenavrin, B. P. Artamonov, C. M. Gaskell, Di-Fu Guo Guo   +6 more
doaj   +1 more source

A Multiwavelength Study of Active Galactic Nuclei in Post-merger Remnants

The Astrophysical Journal, 2023
We investigate the role of galaxy mergers in triggering active galactic nuclei (AGN) in the nearby universe. Our analysis is based on a sample of 79 post-merger remnant galaxies with deep X-ray observations from Chandra/XMM-Newton capable of detecting a ...
Wenhao Li, Preethi Nair, Jimmy Irwin, Sara Ellison, Shobita Satyapal, Niv Drory, Amy Jones, William Keel, Karen Masters, David Stark, Russell Ryan, Kavya Mukundan   +11 more
doaj   +1 more source

Development of Resveratrol-Loaded Herbal Extract-Based Nanocomposites and Their Application to the Therapy of Ovarian Cancer

Nanomaterials, 2018
Resveratrol (RSV) and the ethanol extract of Angelica gigas Nakai (AGN Ex)-based nanoparticles (NPs) were prepared using the nanocrystal concept. AGN/RSV NPs with 224 nm hydrodynamic size, unimodal size distribution, and negative zeta potential values ...
Suyeong Nam, Song Yi Lee, Wie-Soo Kang, Hyun-Jong Cho   +3 more
doaj   +1 more source

Angelica gigas Nakai and Soluplus-Based Solid Formulations Prepared by Hot-Melting Extrusion: Oral Absorption Enhancing and Memory Ameliorating Effects. [PDF]

PLoS ONE, 2015
Oral solid formulations based on Angelica gigas Nakai (AGN) and Soluplus were prepared by the hot-melting extrusion (HME) method. AGN was pulverized into coarse and ultrafine particles, and their particle size and morphology were investigated.
Jingpei Piao, Jae-Young Lee, Jin Bae Weon, Choong Je Ma, Hyun-Jeong Ko, Dae-Duk Kim, Wie-Soo Kang, Hyun-Jong Cho   +7 more
doaj   +1 more source

High Redshift Quasars, Emission Lines and ‘Cloudy’

Open Astronomy, 2011
I describe some of the outstanding “big picture” questions in quasar research and how the development of the plasma simulation code Cloudy is being guided to answer them.
Ferland Gary J.
doaj   +1 more source

Euclid Quick Data Release (Q1)

Astronomy & Astrophysics
Active galactic nuclei (AGN) are an important phase in galaxy evolution. However, they can be difficult to identify due to their varied observational signatures.
Margalef-Bentabol B., Wang L., La Marca A., Rodriguez-Gomez V., Humphrey A., Fotopoulou S., Ricci F., Toba Y., Stevens G., Mezcua M., Roster W., Knapen J. H., Salvato M., Siudek M., Shankar F., Matamoro Zatarain T., Spinoglio L., Dayal P., Petley J., Kondapally R., Aghanim N., Altieri B., Amara A., Andreon S., Auricchio N., Aussel H., Baccigalupi C., Baldi M., Balestra A., Bardelli S., Battaglia P., Biviano A., Bonchi A., Bonino D., Branchini E., Brescia M., Brinchmann J., Camera S., Cañas-Herrera G., Capobianco V., Carbone C., Carretero J., Casas S., Castellano M., Castignani G., Cavuoti S., Chambers K. C., Cimatti A., Colodro-Conde C., Congedo G., Conselice C. J., Conversi L., Copin Y., Costille A., Courbin F., Courtois H. M., Cropper M., Da Silva A., Degaudenzi H., De Lucia G., Di Giorgio A. M., Dolding C., Dole H., Dubath F., Duncan C. A. J., Dupac X., Ealet A., Escoffier S., Farina M., Farinelli R., Faustini F., Ferriol S., Finelli F., Frailis M., Franceschi E., Galeotta S., George K., Gillis B., Giocoli C., Gómez-Alvarez P., Gracia-Carpio J., Granett B. R., Grazian A., Grupp F., Guzzo L., Gwyn S., Haugan S. V. H., Holmes W., Hook I. M., Hormuth F., Hornstrup A., Hudelot P., Jahnke K., Jhabvala M., Keihänen E., Kermiche S., Kiessling A., Kubik B., Kümmel M., Kunz M., Kurki-Suonio H., Le Boulc’h Q., Le Brun A. M. C., Le Mignant D., Liebing P., Ligori S., Lilje P. B., Lindholm V., Lloro I., Mainetti G., Maino D., Maiorano E., Mansutti O., Marcin S., Marggraf O., Martinelli M., Martinet N., Marulli F., Massey R., Maurogordato S., Medinaceli E., Mei S., Melchior M., Mellier Y., Meneghetti M., Merlin E., Meylan G., Mora A., Moresco M., Moscardini L., Nakajima R., Neissner C., Niemi S.-M., Nightingale J. W., 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., Rebolo R., Renzi A., Rhodes J., Riccio G., Romelli E., Roncarelli M., Rottgering H. J. A., Rusholme B., Saglia R., Sakr Z., Sapone D., Sartoris B., Schewtschenko J. A., Schneider P., Schrabback T., Secroun A., Seidel G., Seiffert M., Serrano S., Simon P., Sirignano C., Sirri G., Stanco L., Steinwagner J., Tallada-Crespí P., Taylor A. N., Tereno I., Toft S., Toledo-Moreo R., Torradeflot F., Tutusaus I., Valenziano L., Valiviita J., Vassallo T., Verdoes Kleijn G., Veropalumbo A., Wang Y., Weller J., Zacchei A., Zamorani G., Zerbi F. M., Zinchenko I. A., Zucca E., Allevato V., Ballardini M., Bolzonella M., Bozzo E., Burigana C., Cabanac R., Cappi A., Di Ferdinando D., Escartin Vigo J. A., Gabarra L., Huertas-Company M., Martín-Fleitas J., Matthew S., Mauri N., Metcalf R. B., Pezzotta A., Pöntinen M., Porciani C., Risso I., Scottez V., Sereno M., Tenti M., Viel M., Wiesmann M., Akrami Y., Andika I. T., Anselmi S., Archidiacono M., Atrio-Barandela F., Benoist C., Benson K., Bertacca D., Bethermin M., Bisigello L., Blanchard A., Blot L., Böhringer H., Borgani S., Brown M. L., Bruton S., Calabro A., Camacho Quevedo B., Caro F., Carvalho C. S., Castro T., Cogato F., Cooray A. R., Cucciati O., Davini S., De Paolis F., Desprez G., Díaz-Sánchez A., Diaz J. J., Di Domizio S., Diego J. M., Duc P.-A., Enia A., Fang Y., Ferrari A. G., Ferreira P. G., Finoguenov A., Fontana A., Franco A., Ganga K., García-Bellido J., Gasparetto T., Gautard V., Gavazzi R., Gaztanaga E., Giacomini F., Gianotti F., Gozaliasl G., Guidi M., Gutierrez C. M., Hall A., Hartley W. G., Hemmati S., Hernández-Monteagudo C., Hildebrandt H., Hjorth J., Kajava J. J. E., Kang Y., Kansal V., Karagiannis D., Kiiveri K., Kirkpatrick C. C., Kruk S., Le Graet J., Legrand L., Lembo M., Lepori F., Leroy G., Lesci G. F., Lesgourgues J., Leuzzi L., Liaudat T. I., Liu S. J., Loureiro A., Macias-Perez J., Maggio G., Magliocchetti M., Mannucci F., Maoli R., Martins C. J. A. P., Maurin L., Miluzio M., Monaco P., Moretti C., Morgante G., Murray C., Naidoo K., Navarro-Alsina A., Nesseris S., Passalacqua F., Paterson K., Patrizii L., Pisani A., Potter D., Quai S., Radovich M., Rocci P.-F., Rodighiero G., Sacquegna S., Sahlén M., Sanders D. B., Sarpa E., Scarlata C., Schneider A., Sciotti D., Sellentin E., Smith L. C., Tanidis K., Testera G., Teyssier R., Tosi S., Troja A., Tucci M., Valieri C., Venhola A., Vergani D., Verza G., Vielzeuf P., Walton N. A., Scott D.   +332 more
doaj   +7 more sources

Microlensing-Based Studies of the Unresolved Structure of AGNs and the Composition of Lensing Galaxies

Open Astronomy, 2011
Multiple images of quasars formed by gravitational lensing are typically seen through the lensing galaxy. The granulation of the galaxy in stars or other compact objects induces local (‘microscopic’) but strong fluctuations in the gravitational potential
Gradolph Teresa Mediavilla, Gradolph Evencio Mediavilla, Muñoz Jose Antonio   +2 more
doaj   +1 more source