68 results on '"Sparks, William B."'
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2. Detection of an Optical/UV Jet/Counterjet and Multiple Spectral Components in M84
3. The Direct Detection and Characterization of M-dwarf Planets Using Light Echoes
4. Mapping Circumstellar Matter with Polarized Light: The Case of Supernova 2014J in M82
5. Late-time Flattening of Type Ia Supernova Light Curves: Constraints from SN 2014J in M82
6. INTERSTELLAR-MEDIUM MAPPING IN M82 THROUGH LIGHT ECHOES AROUND SUPERNOVA 2014J
7. MULTI-WAVELENGTH POLARIMETRY AND SPECTRAL STUDY OF THE M87 JET DURING 2002–2008
8. ANHSTPROPER-MOTION STUDY OF THE LARGE-SCALE JET OF 3C273
9. RULING OUT IC/CMB X-RAYS IN PKS 0637-752 AND THE IMPLICATIONS FOR TEV EMISSION FROM LARGE-SCALE QUASAR JETS
10. POLARIMETRY AND THE HIGH-ENERGY EMISSION MECHANISMS IN QUASAR JETS: THE CASE OF PKS 1136–135
11. EVOLUTION OF THE 1919 EJECTA OF V605 AQUILAE,
12. SPECTRAL ENERGY DISTRIBUTIONS OF LOW-LUMINOSITY RADIO GALAXIES ATz∼1-3: A HIGH-zVIEW OF THE HOST/AGN CONNECTION
13. OPTICAL POLARIZATION AND SPECTRAL VARIABILITY IN THE M87 JET
14. EPISODIC STAR FORMATION COUPLED TO REIGNITION OF RADIO ACTIVITY IN 3C 236
15. Infrared Emission from the Nearby Cool Core Cluster Abell 2597
16. The Mid‐Infrared Emission of M87
17. Discovery of 13 Nova Candidates in M87
18. Optical Polarimetry of the Jets of Nearby Radio Galaxies. I. The Data
19. Low Radiative Efficiency Accretion at Work in Active Galactic Nuclei: The Nuclear Spectral Energy Distribution of NGC 4565
20. The Warped Nuclear Disk of Radio Galaxy 3C 449
21. The Jet and Circumnuclear Environment of 3C 293
22. Very Large Telescope FORS1 Imaging Polarimetry of M83 (NGC 5236). I. Search for Light Echoes from Historical Supernovae
23. Two Clusters of Galaxies with Radio-quiet Cooling Cores
24. The Infrared‐dominated Jet of 3C 401
25. X‐Ray and Optical Filaments in M87
26. Month-Timescale Optical Variability in the M87 Jet
27. What Do theHubble Space TelescopeandChandraTell Us about the Jet and the Nuclear Region of the Radio Galaxy 3C 270?
28. Imaging Spectroscopy for Extrasolar Planet Detection
29. The Nuclei of Radio Galaxies in the Ultraviolet: The Signature of Different Emission Processes
30. Filaments and Ionized Gas in the Vicinity of 3C 244.1
31. Deep 10 Micron Imaging of M87
32. The Optical–Near‐Infrared Spectrum of the M87 Jet fromHubble Space TelescopeObservations
33. Face‐on Dust Disks in Galaxies with Optical Jets
34. The Extended Narrow‐Line Region of 3C 299
35. The Globular Cluster System in the Inner Region of M87
36. Discovery of an Optical Synchrotron Jet in 3C 15
37. Erratum: “HSTand MERLIN Observations of 3C 264—A Laboratory for Jet Physics and Unified Schemes” (ApJ, 483, 178 [1997])
38. Detection of Neutral Gas in the Central Galaxy of the Centaurus Cluster
39. HSTand Merlin Observations of 3C 264—A Laboratory for Jet Physics and Unified Schemes
40. Geometric Distance Measurement. II.
41. [ITAL]Hubble Space Telescope[/ITAL] Observations of Globular Clusters in M87 and an Estimate of [ITAL]H[/ITAL][TINF]0[/TINF]
42. Discovery of an Optical Synchrotron Jet in 3C 78
43. Hubble Space Telescope imaging of a radio-quiet galaxy at redshift Z = 3.4
44. New images of the distant, rich cluster CL 0939+4713 with WFPC2
45. Constraints on molecular gas in cooling flows and powerful radio galaxies
46. Low Radiative Efficiency Accretion at Work in Active Galactic Nuclei: The Nuclear Spectral Energy Distribution of NGC 4565
47. The Jet and Circumnuclear Environment of 3C 293
48. What Do the Hubble Space Telescope and Chandra Tell Us about the Jet and the Nuclear Region of the Radio Galaxy 3C 270?
49. HST and Merlin Observations of 3C 264-A Laboratory for Jet Physics and Unified Schemes
50. Polarization and visual intensity of the inner light echo around SN 1987A
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