Zobrazeno 1 - 10
of 87
pro vyhledávání: '"N. Pen"'
Event Horizon Telescope (EHT) observations at 230 GHz have now imaged polarized emission around the supermassive black hole in M87 on event-horizon scales. This polarized synchrotron radiation probes the structure of magnetic fields and the plasma pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2127::cbdc5c95961927f4a0555f8cf9ecfe42
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3068491
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3068491
In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are consistent with theoretical expectations for a weakly accreting superm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2127::bb5047b643f37c590b276976bf76d23f
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3068465
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3068465
Our understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M87∗ shadow size to infer constraints on the physical charges of a lar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2127::05dc17fea791afd7e711ee6e229bde1f
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3071733
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3071733
Very-long-baseline interferometry (VLBI) observations of active galactic nuclei at millimetre wavelengths have the power to reveal the launching and initial collimation region of extragalactic radio jets, down to 10–100 gravitational radii (rg ≡
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2127::ea2e95685520487dd9d9945ecdccd843
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3071710
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3071710
We present the results from a full polarization study carried out with the Atacama Large Millimeter/submillimeter Array (ALMA) during the first Very Long Baseline Interferometry (VLBI) campaign, which was conducted in 2017 April in the λ3 mm and λ1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2127::8d506f951b8891e87a90d8f2f1caa02d
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3068489
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3068489
Autor:
N. Penev
Publikováno v:
Trakia Journal of Sciences, Vol 21, Iss Suppl.1, Pp 118-123 (2023)
In this article, a study of the development of the fifth industrial revolution is made. Due to the rapid development of the bioeconomy and biotechnologies, which in turn change the environment for the functioning of industries and society, the topi
Externí odkaz:
https://doaj.org/article/8e23708e15344e8eb7abb26aa4a958de
Autor:
I. Nencheva, N. Penev
Publikováno v:
Trakia Journal of Sciences, Vol 21, Iss Suppl.1, Pp 124-128 (2023)
Digital transformation is necessary for today's business to remain relevant, competitive and successful. Different technologies bring different benefits to businesses. They help to organize and optimize processes, work more efficiently and create s
Externí odkaz:
https://doaj.org/article/ff874581f7fe47f79623bfee08e30357
Autor:
A. Ruiz-Valencia, D. Paolucci, D. Benmeziane, José Sanchez-Marcano, Marie-Pierre Belleville, E. Petit, V. Bonniol, N. Pen, Laurence Soussan
Publikováno v:
Catalysis Today
Catalysis Today, Elsevier, 2020, 346, pp.106-111. ⟨10.1016/j.cattod.2019.03.053⟩
Catalysis Today, Elsevier, 2020, 346, pp.106-111. ⟨10.1016/j.cattod.2019.03.053⟩
Carbon dioxide constitutes one of the largest carbon feedstocks for fuel production. This work demonstrates that an environmental bacterial consortium grown on methane is able to directly and selectively reduce CO2 into formate. The conversion was ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58bf67182f1b902889d66113efabb793
https://hal.archives-ouvertes.fr/hal-02930313
https://hal.archives-ouvertes.fr/hal-02930313
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol X-M-1-2023, Pp 115-123 (2023)
The use of multiple digital technologies has addressed conventional exhibition display issues, improving public experience, and aiding in the understanding of historical changes in cultural heritage. This facilitates community sharing and internation
Externí odkaz:
https://doaj.org/article/7d0db25b0f4a45608d6db88a62a463f4
Autor:
Yao Fu, M. Susan Lozier, Tiago Carrilho Biló, Amy S. Bower, Stuart A. Cunningham, Frédéric Cyr, M. Femke de Jong, Brad deYoung, Lewis Drysdale, Neil Fraser, Nora Fried, Heather H. Furey, Guoqi Han, Patricia Handmann, N. Penny Holliday, James Holte, Mark E. Inall, William E. Johns, Sam Jones, Johannes Karstensen, Feili Li, Astrid Pacini, Robert S. Pickart, Darren Rayner, Fiammetta Straneo, Igor Yashayaev
Publikováno v:
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-13 (2023)
Abstract Understanding the variability of the Atlantic Meridional Overturning Circulation is essential for better predictions of our changing climate. Here we present an updated time series (August 2014 to June 2020) from the Overturning in the Subpo
Externí odkaz:
https://doaj.org/article/eefe54897c5e489ca279845f8af31096