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136 Chapter 5. Radio and optical observations Table 5.1: Radio positions, flux densities and spectral indices obtained after the VLA A configuration observations for all sources belonging to Group 1 except 1RXS J181119.4−275939 and 1RXS J185002.8−075833. The coordinates are those obtained from the uniform weighted maps of all concatenated 3.6 cm wavelength observations. The three rows of flux densities and spectral index for each source correspond to the three observing runs, i.e., July 9, 22, and 30, respectively. The flux densities at 3.6 and 6 cm have been obtained from natural weighted self-calibrated maps for each source, with the exception of 1RXS J042201.0+485610, where self-calibration was not possible. 1RXS name α (2000) δ (2000) Flux density [mJy] Spectral index [h, m, s] [ ◦ , ′ , ′′ ] S3.6 cm S6 cm α3.6−6 cm J001442.2+580201 00 14 42.1262 +58 02 01.219 6.94 ± 0.04 7.90 ± 0.07 −0.24 ± 0.02 ± 0.0013 ± 0.010 6.36 ± 0.07 7.05 ± 0.09 −0.19 ± 0.03 5.98 ± 0.06 6.47 ± 0.07 −0.14 ± 0.03 J013106.4+612035 01 31 07.2267 +61 20 33.376 16.95 ± 0.04 17.95 ± 0.08 −0.10 ± 0.01 ± 0.0014 ± 0.010 16.62 ± 0.07 16.49 ± 0.09 +0.01 ± 0.01 17.43 ± 0.07 17.95 ± 0.08 −0.05 ± 0.01 J042201.0+485610 04 22 00.5244 +48 56 03.634 0.70 ± 0.03 0.30 ± 0.04 +1.6 ± 0.3 ± 0.0010 ± 0.010 0.74 ± 0.05 0.57 ± 0.05 +0.5 ± 0.2 0.71 ± 0.03 0.35 ± 0.04 +1.3 ± 0.2 J062148.1+174736 06 21 47.7522 +17 47 35.078 9.63 ± 0.04 8.37 ± 0.07 +0.26 ± 0.02 ± 0.0007 ± 0.010 9.53 ± 0.07 9.87 ± 0.07 −0.06 ± 0.02 11.45 ± 0.05 10.40 ± 0.07 +0.18 ± 0.01 J072259.5−073131 07 22 59.6809 −07 31 34.805 40.90 ± 0.05 47.67 ± 0.08 −0.280 ± 0.004 (a) ± 0.0007 ± 0.010 44.29 ± 0.07 44.5 ± 0.1 −0.009 ± 0.005 45.37 ± 0.08 54.29 ± 0.08 −0.329 ± 0.004 J072418.3−071508 07 24 17.2912 −07 15 20.339 438.5 ± 0.2 423.4 ± 0.3 +0.064 ± 0.002 (b) ± 0.0007 ± 0.010 455.75 ± 0.09 439.3 ± 0.2 +0.067 ± 0.001 428.5 ± 0.3 404.9 ± 0.3 +0.104 ± 0.002 (a) Also observed at 20 cm on 1999 July 30, with a flux density of 55.1 ± 0.4 mJy, and showing a one-sided radio jet. (b) Also observed at 20 cm on 1999 July 30, with a flux density of 248.3 ± 0.9 mJy.
5.3. Optical observations 137 Flux density [mJy] 9 8 7 6 20 18 16 3 2 1 0.5 0.3 14 12 10 8 100 80 60 40 500 400 300 200 1RXS J001442.2+580201 1RXS J013106.4+612035 1RXS J042201.0+485610 1RXS J062158.1+174736 1RXS J072259.5−073131 1RXS J072418.3−071508 1 2 5 8 10 Frequency [GHz] Figure 5.2: Radio spectra of the six sources listed in Table 5.1 at different epochs. The VLA data from July 9, 22 and 30 are denoted by filled circles, open circles and open triangles, respectively. The non-simultaneous NVSS data, at 20 cm wavelength, are plotted as filled squares. Both axes are in logarithmic scale. Error bars not visible are smaller than the symbol’s size.
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UNIVERSITAT DE BARCELONA Departamen
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Per a la meva neboda Blanca, que va
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feina no presentada en aquesta tesi
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desfogar-nos conjuntament, per la s
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From the scientifical point of view
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Gràcies a la meva germana Nàdia,
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ii CONTENTS I Discovery and study o
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iv CONTENTS II A search for new mic
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vi CONTENTS
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viii Resum de la tesi d’Eddington
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x Resum de la tesi imprescindible p
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xii Resum de la tesi dels sistemes
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xiv Resum de la tesi un comportamen
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xvi Resum de la tesi MilliARC SEC 4
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xviii Resum de la tesi per poder de
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xx Resum de la tesi valors força s
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xxii Resum de la tesi 2. D’entre
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xxiv Resum de la tesi pano Alemán
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xxvi Resum de la tesi 3.3 Observaci
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xxxii BIBLIOGRAFIA
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28 BIBLIOGRAPHY Lewin, W. H. G., va
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30 BIBLIOGRAPHY
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Chapter 2 Multiwavelength approach
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2.3. An interesting target in the s
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2.6. The X-ray counterpart: RX J182
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2.7. The γ-ray counterpart: 3EG J1
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2.7. The γ-ray counterpart: 3EG J1
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2.8. A proposed scenario to explain
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Figure 2.23: Scenario where the mul
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2.8. A proposed scenario to explain
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