Results 11 to 20 of about 8,312 (102)

The Vanishing of the Primary Emission Region in PKS 1510–089 [PDF]

International Conference on Rebooting Computing, 2023
In 2021 July, PKS 1510−089 exhibited a significant flux drop in the high-energy γ-ray (by a factor 10) and optical (by a factor 5) bands and remained in this low state throughout 2022. Similarly, the optical polarization in the source vanished, resulting
F. Aharonian, F. Benkhali, J. Aschersleben, H. Ashkar, Michael Backes, V. B. Martins, J. Barnard, R. Batzofin, Y. Becherini, D. Berge, K. Bernloehr, B. Bi, M. D. B. Lavergne, M. Boettcher, C. Boisson, J. Bolmont, J. Borowska, M. Bouyahiaoui, F. Bradascio, M. Breuhaus, R. Brose, A. Brown, F. Brun, B. Bruno, T. Bulik, C. Burger-Scheidlin, S. Caroff, S. Casanova, R. Cecil, J. Celic, M. Cerruti, T. Chand, S. Chandra, A. Chen, J. Chibueze, O. Chibueze, G. Cotter, J. D. Mbarubucyeye, I. Davids, A. Djannati-Atai, A. Dmytriiev, Victor Doroshenko, K. Egberts, S. Einecke, J. Ernenwein, S. Fegan, G. Fontaine, M. Fuessling, S. Funk, S. Gabici, S. Ghafourizadeh, G. Giavitto, D. Glawion, J. Glicenstein, P. Goswami, G. Grolleron, L. Haerer, W. Hofmann, T. Holch, M. Holler, D. Horns, M. Jamrozy, F. Jankowsky, V. Joshi, I. Jung-Richardt, E. Kasai, K. Katarzyski, R. Khatoon, B. Khélifi, W. Klu'zniak, N. Komin, K. Kosack, D. Kostunin, R. G. Lang, S. L. Stum, F. Leitl, A. Lemière, J. Lenain, F. Leuschner, A. Luashvili, J. Mackey, V. Marandon, P. Marchegiani, G. Martí-Devesa, R. Marx, A. Mehta, M. Meyer, A. Mitchell, R. Moderski, L. Mohrmann, A. Montanari, E. Moulin, M. Naurois, J. Niemiec, A. Noel, P. O’Brien, S. Ohm, L. Olivera-Nieto, E. Wilhelmi, M. Ostrowski, S. Panny, M. Panter, G. Peron, D. Prokhorov, G. Puehlhofer, M. Punch, A. Quirrenbach, P. Reichherzer, A. Reimer, O. Reimer, H. Ren, F. Rieger, G. Rowell, B. Rudak, H. R. Ricarte, E. Ruiz-Velasco, V. Sahakian, H. Salzmann, D. Sanchez, A. Santangelo, M. Sasaki, Friedrich Schuessler, H. Schutte, U. Schwanke, J. Shapopi, H. Sol, A. Specovius, S. Spencer, L. Stawarz, R. Steenkamp, S. Steinmassl, C. Steppa, I. Sushch, H. Suzuki, T. Takahashi, T. Tanaka, R. Terrier, N. Tsuji, C. Eldik, B. V. Soelen, M. Vecchi, J. Veh, J. Vink, T. Wach, S. Wagner, A. Wierzcholska, M. Zacharias, D. Zargaryan, A. Zdziarski, A. Zech, S. Zouari, N. Żywucka, D. Buckley, J. Cooper, D. Groenewald   +154 more
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Multiwavelength Temporal Variability of the Blazar PKS 1510–089 [PDF]

Astrophysical Journal, 2023
We perform correlation and periodicity search analyses on long-term multiband light curves of the flat-spectrum radio quasar PKS 1510−089 observed by the space-based Fermi-Large Area Telescope in γ-rays, the SMARTS and Steward Observatory telescopes in ...
Q. Yuan, P. Kushwaha, Alok C. Gupta, Ashutosh Tripathi, P. Wiita, M. Zhang, X. Liu, A. Lähteenmäki, M. Tornikoski, J. Tammi, V. Ramakrishnan, L. Cui, X. Wang, M. Gu, C. Bambi, A. Volvach   +15 more
semanticscholar   +1 more source

Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510–089 on Multiple Timescales [PDF]

Astrophysical Journal, 2021
We present the results of variability power spectral density (PSD) analysis using multiwavelength radio to GeV γ-ray light curves covering timescales of decades/years to days/minutes for the blazars 3C 279 and PKS 1510−089. The PSDs are modeled as single
A. Goyal, M. Soida, Ł. Stawarz, P. Wiita, K. Nilsson, S. Jorstad, A. Marscher, M. Aller, H. Aller, A. Lähteenmäki, T. Hovatta, S. Zoła, K. Nalewajko, M. Tornikoski, J. Tammi, M. Hodges, S. Kiehlmann, A. Readhead, W. Max-Moerbeck, E. Lindfors, V. Ramazani, D. Reichart, D. Caton, J. Valverde, D. Horan, R. Ojha, Pfesesani van Zyl   +26 more
semanticscholar   +1 more source

Transient Quasi-Periodic Oscillations at $\gamma$-rays in the TeV Blazar PKS 1510-089 [PDF]

, 2021
We present periodicity search analyses on the γ-ray lightcurve of the TeV blazar PKS 1510-089 observed by the Fermi Large Area Telescope. We report the detection of two transient quasi-periodic oscillations: a 3.6-day QPO during the outburst in 2009 that
A. Roy, A. Sarkar, A. Chatterjee, Alok C. Gupta, V. Chitnis, P. V. S. D. O. Physics, T. I. O. F. Research, Homi Bhabha Road, Mumbai, India., Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital, D. Physics, The State University of New Jersey, Ewing, Nj, USA.   +17 more
semanticscholar   +1 more source

Modelling the persistent low-state γ-ray emission of the PKS 1510−089 blazar with electromagnetic cascades initiated in hadronuclear interactions [PDF]

Monthly notices of the Royal Astronomical Society, 2021
Blazars may accelerate protons and/or nuclei as well as electrons. The hadronic component of accelerated particles in blazars may constitute the bulk of their high-energy budget; nevertheless, this component is elusive because of the high value of the ...
T. Dzhatdoev, E. Khalikov, V. Latypova, E. Podlesnyi, I. Vaiman   +4 more
semanticscholar   +1 more source

Broad line region and black hole mass of PKS 1510-089 from spectroscopic reverberation mapping [PDF]

Astronomy & Astrophysics, 2020
Reverberation results of the flat spectrum radio quasar PKS 1510-089 from 8.5 years of spectroscopic monitoring carried out at Steward Observatory over nine observing seasons between December 2008 and June 2017 are presented.
S. Rakshit
semanticscholar   +1 more source

Quasi-periodic behaviour in the radio and γ-ray light curves of blazar PKS 1510–089

Monthly notices of the Royal Astronomical Society, 2023
We explore the possible quasi-periodic oscillations (QPOs) of the blazar PKS 1510–089, utilizing the ∼38-year Metsähovi flux density observations at 37 GHz and over ten-year Fermi-LAT observations in the 0.1–300 GeV energy range.
Xiao-Pan Li, Yan Cai, Hai-yan Yang, A. Lähteenmäki, M. Tornikoski, J. Tammi, S. Suutarinen, Haitao Yang, Yuanze Luo, Lisha Wang   +9 more
semanticscholar   +1 more source

Risk Factors Associated with Low Back Pain among A Group of 1510 Pregnant Women

Journal of Personalized Medicine, 2020
Background: Low Back Pain (LBP) is a frequent, very common, and costly health problem. LBP, which occurs during pregnancy, may become a lifelong problem.
Aleksandra Bryndal, M. Majchrzycki, Agnieszka Grochulska, S. Głowiński, A. Seremak-Mrozikiewicz   +4 more
semanticscholar   +1 more source

Differential diagnosis of a thyroid mass, facial malar rash and ptosis on the flora in the primavera by Sandro Botticelli (1445–1510)

Journal of Endocrinological Investigation, 2021
Purpose The Primavera is considered amongst the greatest and controversial artistic masterpieces worldwide painted by renaissance artist Sandro Botticelli. The aim was to identify any underlying medical foundations for the painting. Methods Observational
H. Ashrafian
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Two-zone Emission Modeling of PKS 1510-089 during the High State of 2015 [PDF]

Astrophysical Journal, 2019
PKS 1510-089 is one of the most variable blazars in the third Fermi-LAT source catalog. During 2015, this source has shown four flares identified as flares A, B, C, and D in between three quiescent states: Q1, Q2, and Q3.
R. Prince, N. Gupta, K. Nalewajko
semanticscholar   +1 more source