Zobrazeno 1 - 10
of 1 001
pro vyhledávání: '"Järvelä, P."'
Autor:
Vietri, A., Berton, M., Järvelä, E., Kunert-Bajraszewska, M., Ciroi, S., Varglund, I., Barba, B. Dalla, Sani, E., Crepaldi, L.
Publikováno v:
A&A 689, A123 (2024)
The term 'active galactic nuclei' (AGN) subtends a huge variety of objects, classified on their properties at different wavelengths. Peaked sources (PS) represent a class of AGN at the first stage of evolution, characterised by a peaked radio spectru
Externí odkaz:
http://arxiv.org/abs/2405.17552
Autor:
Buhariwalla, Margaret Z., Gallo, L. C., Mao, J., Jiang, J., Pothier-Bogoslowski, L. K., Järvelä, E., Komossa, S., Grupe, D.
Previous X-ray works on Mrk 1239 have revealed a complex Narrow Line Seyfert 1 (NLS1) that exhibits substantial absorption and strong emission from both collisional (CIE) and photoionized (PIE) plasmas. Here, we report on deep-pointed observations wi
Externí odkaz:
http://arxiv.org/abs/2405.08785
Autor:
Foschini, Luigi, Barba, Benedetta Dalla, Tornikoski, Merja, Andernach, Heinz, Marziani, Paola, Marscher, Alan P., Jorstad, Svetlana G., Järvelä, Emilia, Antón, Sonia, Bontà, Elena Dalla
We present the results of a comparison between different methods to estimate the power of relativistic jets from active galactic nuclei (AGN). We selected a sample of 32 objects (21 flat-spectrum radio quasars, 7 BL Lacertae Objects, 2 misaligned AGN
Externí odkaz:
http://arxiv.org/abs/2403.17581
Autor:
Järvelä, E., Savolainen, T., Berton, M., Lähteenmäki, A., Kiehlmann, S., Hovatta, T., Varglund, I., Readhead, A. C. S., Tornikoski, M., Max-Moerback, W., Reeves, R. A., Suutarinen, S.
We report on the discovery of one of the most extreme cases of high-frequency radio variability ever measured in active galactic nuclei (AGN), observed on timescales of days and exhibiting variability amplitudes of three to four orders of magnitude.
Externí odkaz:
http://arxiv.org/abs/2312.02326
Publikováno v:
A&A 679, A32 (2023)
We studied seven nearby narrow-line Seyfert 1 (NLS1) galaxies in $J$- and $Ks$-bands with redshifts varying from 0.019 to 0.092. This is the first multi-source study targeting the hosts of southern NLS1 galaxies. Our data was obtained with the FourSt
Externí odkaz:
http://arxiv.org/abs/2309.03277
Autor:
Romano, P., Lähteenmäki, A., Vercellone, S., Foschini, L., Berton, M., Raiteri, C. M., Braito, V., Ciroi, S., Järvelä, E., Baitieri, S., Varglund, I., Tornikoski, M., Suutarinen, S.
Publikováno v:
A&A 673, A85 (2023)
We report on the first multi-wavelength Swift monitoring campaign performed on SDSS J164100.10+345452.7, a nearby narrow-line Seyfert 1 galaxy formerly known as radio quiet which was recently detected both in the radio (at 37 GHz) and in the $\gamma$
Externí odkaz:
http://arxiv.org/abs/2303.05534
Autor:
Isabelle Schrauwen, Yasmin Rajendran, Anushree Acharya, Susanna Öhman, Maria Arvio, Ritva Paetau, Auli Siren, Kristiina Avela, Johanna Granvik, Suzanne M. Leal, Tuomo Määttä, Hannaleena Kokkonen, Irma Järvelä
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-7 (2024)
Abstract While short-read sequencing currently dominates genetic research and diagnostics, it frequently falls short of capturing certain structural variants (SVs), which are often implicated in the etiology of neurodevelopmental disorders (NDDs). Op
Externí odkaz:
https://doaj.org/article/fbba5398c7c74c1c917830d716485070
Autor:
Foschini, Luigi, Lister, Matthew L., Andernach, Heinz, Ciroi, Stefano, Marziani, Paola, Antón, Sonia, Berton, Marco, Bontà, Elena Dalla, Järvelä, Emilia, Marchã, Maria J. M., Romano, Patrizia, Tornikoski, Merja, Vercellone, Stefano, Vietri, Amelia
Publikováno v:
Universe 2022, 8(11), 587
We considered the fourth catalog of gamma-ray point sources produced by the Fermi Large Area Telescope (LAT) and selected only jetted active galactic nuclei (AGN) or sources with no specific classification, but with a low-frequency counterpart. Our f
Externí odkaz:
http://arxiv.org/abs/2211.03400
Autor:
Johanna Tuunanen, Heta Helakari, Niko Huotari, Tommi Väyrynen, Matti Järvelä, Janne Kananen, Annastiina Kivipää, Lauri Raitamaa, Seyed-Mohsen Ebrahimi, Mika Kallio, Johanna Piispala, Vesa Kiviniemi, Vesa Korhonen
Publikováno v:
Frontiers in Neuroscience, Vol 18 (2024)
IntroductionThe cerebrospinal fluid dynamics in the human brain are driven by physiological pulsations, including cardiovascular pulses and very low-frequency (< 0.1 Hz) vasomotor waves. Ultrafast functional magnetic resonance imaging (fMRI) facilita
Externí odkaz:
https://doaj.org/article/93d72412edbf40c484e004635eb38365
Publikováno v:
Frontiers in Virtual Reality, Vol 5 (2024)
Enhancing the experience of virtual reality (VR) through haptic feedback could benefit applications from leisure to rehabilitation and training. Devices which provide more realistic kinesthetic (force) feedback appear to hold more promise than their
Externí odkaz:
https://doaj.org/article/95878bd327a540adb84fb8d54b3b887d