10 results on '"Tez, E"'
Search Results
2. A possible binary AGN in Mrk\,622?
- Author
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Ben��tez, E., Rodr��guez-Espinosa, J. M., Cruz-Gonz��lez, I., Gonz��lez-Mart��n, O., Negrete, C. A., Ruschel-Dutra, D., Guti��rrez, L., and Jim��nez-Bail��n, E.
- Subjects
Astrophysics::High Energy Astrophysical Phenomena ,Astrophysics of Galaxies (astro-ph.GA) ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics::Galaxy Astrophysics - Abstract
Mrk\,622 is a Compton Thick AGN and a double-peaked narrow emission line galaxy, thus a dual AGN candidate. In this work, new optical long-slit spectroscopic observations clearly show that this object is rather a triple peaked narrow emission line galaxy, with both blue and red shifted narrow emission lines, as well as a much narrower emission line centred at the host galaxy systemic velocity. The average velocity offset between the blue and red shifted components is $\sim$500 km\,s$^{-1}$, which is producing the apparent double-peaked emission lines. These two components are in the loci of AGN in the Baldwin, Phillips \& Terlevich (BPT) diagrams and are found to be spatially separated by $\sim$76 pc. Analysis of the optical spatially resolved spectroscopic observations presented in this work favours that Mrk\,622 is a system consisting of a Composite AGN amidst a binary AGN candidate, likely the result of a recent merger. This notwithstanding, outflows from a starburst, or single AGN could also explain the triple nature of the emission lines., 5 pages, 3 figures, 3 tables. Accepted in MNRAS Letters. 5 pages, 3 tables, 3 figures
- Published
- 2017
- Full Text
- View/download PDF
3. The long-lasting activity of . GASP-WEBT and satellite observations in 2008-2010
- Author
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Raiteri, C, Villata, M, Aller, M, Gurwell, M, Kurtanidze, O, Lahteenmaki, A, Larionov, V, Romano, P, Vercellone, S, Agudo, I, Aller, H, Arkharov, A, Bach, U, Ben#236, Tez, E, Berdyugin, A, Blinov, D, Borisova, E, Bottcher, M, Bravo Calle, O, Buemi, C, Calcidese, P, Carosati, D, Casas, R, Chen, W, Efimova, N, G#242, Mez, J, Gusbar, C, Hawkins, K, Heidt, J, Hiriart, D, Hsiao, H, Jordan, B, Jorstad, S, Joshi, M, Kimeridze, G, Koptelova, E, Konstantinova, T, Kopatskaya, E, Kurtanidze, S, Larionova, E, Larionova, L, Leto, P, Li, Y, Ligustri, R, Lindfors, E, Lister, M, Marscher, A, Molina, S, Morozova, D, Nieppola, E, Nikolashvili, M, Nilsson, K, Palma, N, Pasanen, M, Reinthal, R, Roberts, V, Ros, J, Roustazadeh, P, Sadun, A, Sakamoto, T, Schwartz, R, Sigua, L, Sillanpaa, A, Takalo, L, Tammi, J, Taylor, B, Tornikoski, M, Trigilio, Corrado, Troitsky, I, Umana, G, Volvach, A, and Yuldasheva, T.
- Published
- 2011
4. Multiwavelength Observations of the Gamma-Ray Blazar PKS 0528+134 in Quiescence
- Author
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Palma, N, Bottcher, M, de la Calle, I, Agudo, I, Aller, M, Aller, H, Bach, U, Ben#236, Tez, E, Buemi, C, Escande, L, G#242, Mez, J, Gurwell, M, Heidt, J, Hiriart, D, Jorstad, S, Joshi, M, Lahteenmaki, A, Larionov, V, Leto, P, Li, Y, L#242, Pez, J, Lott, B, Madejski, G, Marscher, A, Morozova, D, Raiteri, C, Roberts, V, Tornikoski, M, Trigilio, Corrado, Umana, G, Villata, M, and Wylezalek, D.
- Published
- 2011
5. Multiwavelength behaviour of the blazar OJ 248 from radio to γ-rays.
- Author
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Carnerero, M. I., Raiteri, C. M., Villata, M., Acosta-Pulido, J. A., D'Ammando, F., Smith, P. S., Larionov, V. M., Agudo, I., Arévalo, M. J., Arkharov, A. A., Bach, U., Bachev, R., BenÃ-tez, E., Blinov, D. A., Bozhilov, V., Buemi, C. S., Bueno, A. Bueno, Carosati, D., Casadio, C., and Chen, W. P.
- Subjects
WAVELENGTHS ,BL Lacertae objects ,ASTRONOMICAL observatories ,ABSORPTION ,ASTRONOMICAL polarimetry - Abstract
We present an analysis of the multiwavelength behaviour of the blazar OJ 248 at z = 0.939 in the period 2006-2013. We use low-energy data (optical, near-infrared, and radio) obtained by 21 observatories participating in the Gamma-Ray Large Area Space Telescope (GLAST)-AGILE Support Program of the Whole Earth Blazar Telescope, as well as data from the Swift (optical-UV and X-rays) and Fermi (y-rays) satellites, to study flux and spectral variability and correlations among emissions in different bands. We take into account the effect of absorption by the Damped Lyman a intervening system at z = 0.525. Two major outbursts were observed in 2006-2007 and in 2012-2013 at optical and near-IR wavelengths, while in the high-frequency radio light curves prominent radio outbursts are visible peaking at the end of 2010 and beginning of 2013, revealing a complex radio-optical correlation. Cross-correlation analysis suggests a delay of the optical variations after the γ-ray ones of about a month, which is a peculiar behaviour in blazars. We also analyse optical polarimetric and spectroscopic data. The average polarization percentage P is less than 3 per cent, but it reaches ~ 19 per cent during the early stage of the 2012-2013 outburst. A vague correlation of P with brightness is observed. There is no preferred electric vector polarization angle and during the outburst the linear polarization vector shows wide rotations in both directions, suggesting a complex behaviour/structure of the jet and possible turbulence. The analysis of 140 optical spectra acquired at the Steward Observatory reveals a strong Mg ii broad emission line with an essentially stable flux of 6.2 x 10
-15 erg cm-2 s-1 and a full width at half-maximum of 2053 km s-1 . [ABSTRACT FROM AUTHOR]- Published
- 2015
- Full Text
- View/download PDF
6. The Parametric Transformer: A Power Conversion Device Demonstrating the Principles of Parametric Excitation.
- Author
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Tez, E. Salih and Smith, I. R.
- Published
- 1984
- Full Text
- View/download PDF
7. Chlamydial infection in infants.
- Author
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Dereli, Deniz, Çoker, Mahmut, Ertem, Ekin, Serter, Demir, Tanaç, Remziye, Tez, Ece, Dereli, D, Coker, M, Ertem, E, Serter, D, Tanaç, R, and Tez, E
- Published
- 1996
- Full Text
- View/download PDF
8. The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and ?-ray outburst
- Author
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Villata, M., Raiteri, C., Gurwell, M., Larionov, V., Kurtanidze, O., Aller, M., L?hteenm?ki, A., Chen, W., Nilsson, K., Agudo, I., Aller, H., Arkharov, A., Bach, U., Bachev, R., Beltrame, P., Ben?tez, E., Buemi, C., B?ttcher, M., Calcidese, P., Capezzali, D., Carosati, D., Da Rio, D., Di Paola, A., Dolci, M., Dultzin, D., Forn?, E., G?mez, J., Hagen-Thorn, V., Halkola, A., Heidt, J., Hiriart, D., Hovatta, T., Hsiao, H.-Y., Jorstad, S., Kimeridze, G., Konstantinova, T., Kopatskaya, E., Koptelova, E., Leto, P., Ligustri, R., Lindfors, E., Lopez, J., Marscher, A., Mommert, M., Mujica, R., Nikolashvili, M., Palma, N., Pasanen, M., Roca-Sogorb, M., Ros, J., Roustazadeh, P., Sadun, A., Saino, J., Sigua, L., Sorcia, M., Takalo, L., Tornikoski, M., Trigilio, C., Turchetti, R., and Umana, G.
- Abstract
Context. Since 2001, the radio quasar 3C 454.3 has undergone a period of high optical activity, culminating in the brightest optical state ever observed, during the 2004-2005 outburst. The Whole Earth Blazar Telescope (WEBT) consortium has carried out several multifrequency campaigns to follow the source behaviour.Aims. The GLAST-AGILE Support Program (GASP) was born from the WEBT to provide long-term continuous optical-to-radio monitoring of a sample of ?-loud blazars, during the operation of the AGILE and GLAST (now known as Fermi GST) ?-ray satellites. The main aim is to shed light on the mechanisms producing the high-energy radiation, through correlation analysis with the low-energy emission. Thus, since 2008 the monitoring task on 3C?454.3 passed from the WEBT to the GASP, while both AGILE and Fermi detected strong ?-ray emission from the source.Methods. We present the main results obtained by the GASP at optical, mm, and radio frequencies in the 2008-2009 season, and compare them with the WEBT?results from previous years.Results. An optical outburst was observed to peak in mid July?2008, when Fermi detected the brightest ?-ray levels. A?contemporaneous mm outburst maintained its brightness for a longer time, until the cm emission also reached the maximum levels. The behaviour compared in the three bands suggests that the variable relative brightness of the different-frequency outbursts may be due to the changing orientation of a curved inhomogeneous jet. The optical light curve is very well sampled during the entire season, which is also well covered by the various AGILE and Fermi observing periods. The relevant cross-correlation studies will be very important in constraining high-energy emission models.
- Published
- 2009
9. Prevalence of Chlamydia pneumoniae specific antibodies in different clinical situations and healthy subjects in Izmir, Turkey.
- Author
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Gencay M, Dereli D, Ertem E, Serter D, Puolakkainen M, Saikku P, Boydak B, Dereli S, Ozbakkaloglu B, Yorgancioglu A, and Tez E
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Child, Child, Preschool, Chlamydia Infections complications, Female, Fluorescent Antibody Technique, Humans, Immunoglobulin A blood, Immunoglobulin G blood, Immunoglobulin M blood, Infant, Lung Diseases, Obstructive epidemiology, Lung Diseases, Obstructive microbiology, Male, Middle Aged, Myocardial Infarction epidemiology, Myocardial Infarction microbiology, Pneumonia epidemiology, Pneumonia microbiology, Prevalence, Risk Factors, Seroepidemiologic Studies, Turkey epidemiology, Antibodies, Bacterial blood, Chlamydia Infections epidemiology, Chlamydophila pneumoniae immunology
- Abstract
Serological markers for Chlamydia pneumoniae were investigated by using the microimmunofluorescence (MIF) test in various age and patient groups in a specific area in Turkey. IgG seropositivity to C. pneumoniae was 64.3% and 18.7% in healthy adults and children, respectively. The highest positivity rate (77%) was in the 15-19 age group. Among the groups investigated, serological findings revealed a possible etiological association between C. pneumoniae and the clinical condition in the groups with acute myocardial infarction, atypical pneumoniae and chronic obstructive pulmonary disease.
- Published
- 1998
- Full Text
- View/download PDF
10. Childhood asthma and atmospheric conditions.
- Author
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Yüksel H, Tanaç R, Tez E, Demir E, and Coker M
- Subjects
- Adolescent, Asthma physiopathology, Child, Child, Preschool, Female, Humans, Humidity, Male, Seasons, Asthma etiology, Peak Expiratory Flow Rate, Weather
- Abstract
Bronchial asthma is the most common chronic respiratory illness in childhood. It is characterized by paroxysmal bronchospastic periods. There are many studies giving reasons to explain the bronchospasm periods. One of the reasons, atmospheric conditions, is effective in creating a clinical picture of asthmatic patients. In the present study, the correlation between atmospheric conditions and asthmatic symptoms in children was investigated using peak expiratory flow rate (PEFR) as the respiratory function test. Twenty-one children with bronchial asthma were monitored in the study. They were followed as outpatients of the Ege University Medical Faculty, Department of Pediatric Allergy and Pneumotology, between November 1993 and June 1994. Atmospheric conditions were recorded from the local meteorology center. Complaints and the PEFR of children were compared with the meteorological data. Asthmatic symptoms were increased by low temperatures in all asthmatic children. An increase was detected in the extrinsic group by relative humidity and ratio of cloud, but in the intrinsic group only by relative humidity.
- Published
- 1996
- Full Text
- View/download PDF
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