| Proposal Number | Subject Category | PI Name | Chandra Time | Title |
|---|---|---|---|---|
| 26700506 | ACTIVE GALAXIES AND QUASARS | Eileen T. Meyer | 90 ks | A superluminal jet in 3C264: the view at 30 |
| 26700505 | ACTIVE GALAXIES AND QUASARS | Yue Shen | 25 ks | The curious case of SDSS J1000+2233: a recoiling SMBH, a sub-parsec SMBH binary, or an unusual disk emitter? |
Subject Category: ACTIVE GALAXIES AND QUASARS
Proposal Number: 26700506
Title: A superluminal jet in 3C264: the view at 30
PI Name: Eileen T. Meyer
Abstract: 3C264 is a nearby radio galaxy with a prominent optical jet. Previous HST observations from the 1990s through the 2010s discovered not only the fastest-ever superluminal speed (on kpc scales) of 7c for a knot in the jet, but also captured the motion of this knot through the start of a collision with slow-moving material downstream, with concomitant brightening indicating in-situ particle acceleration. This remarkable discovery represents the first direct evidence for the internal shock model for particle acceleration. This proposal is part of a joint HST/VLA/Chandra monitoring of the spectral and spatial evolution of the colliding knots in 3C264 where here we request Chandra ACIS observations.
Subject Category: ACTIVE GALAXIES AND QUASARS
Proposal Number: 26700505
Title: The curious case of SDSS J1000+2233: a recoiling SMBH, a sub-parsec SMBH binary, or an unusual disk emitter?
PI Name: Yue Shen
Abstract: SDSS J1000+2233 is a broad-line quasar at z~0.4, with its low-ionization broad lines blueshifted by ~8000 km/s, making it a prime candidate for a recoiling or binary supermassive black hole (SMBH). We propose joint HST and Chandra observations to investigate its nature. Chandra X-ray imaging will pinpoint the SMBH's location, aiding in the HST imaging to search for spatially offset nuclei, supporting the recoiling SMBH scenario. Additionally, Chandra will help refine our understanding of the SMBH's behavior and its environment, with broader implications for gravitational wave astronomy and SMBH evolution. With just 6 HST hours and 25 ks of Chandra time, this program could potentially confirm general relativistic predictions from SMBH mergers.