Observing proposals
2014 Approved observing proposals
PI |
Band |
Instrument |
Title |
Allocated Time |
Strategy |
UT observing dates |
Rushton |
Radio |
VLA and VLBA |
Simultaneous radio and X-ray monitoring of the G2 encounter with Sgr A* |
2x8h |
Simultaneous with XMM |
April 3, 0800 - 1630 UT |
Tsuboi |
22 GHz |
VLBI (Japanese network) |
Daily Monitoring of Sgr A* at 22GHz with Japanese VLBI Network |
1h/day |
Daily monitoring of Sgr A* at 22GHz |
up to May 2014 |
Wang |
1.1mm |
LMT/AzTEC |
LMT/AzTEC Variability Study of Sgr A* during the G2 Encounter |
0.5hr/day |
daily+two long intraday runs simult. with Chandra |
April + May 2014 |
Agudo |
1+2+3mm |
IRAM 30m |
Monitoring the Encounter of a Gas Cloud with Sgr A* |
weekly |
flux, linear polarization and rotation measure of Sgr A* |
throughout first half of 2014 |
Gillessen |
NIR |
SINFONI/VLT |
Watching G2 disrupt [...] |
12h |
Integral field spectroscopy to follow evolution of line shape |
Mar 27 - Apr 1, 2014 |
Gillessen |
NIR |
SINFONI/VLT |
Watching G2 disrupt [...] |
12h |
Integral field spectroscopy to follow evolution of line shape |
Apr 7 - Apr 10, 2014 |
Gillessen |
NIR |
SINFONI/VLT |
Watching G2 disrupt [...] |
12h |
Integral field spectroscopy to follow evolution of line shape |
Apr 21 - Apr 24, 2014 |
Gillessen |
NIR |
SINFONI/VLT |
Watching G2 disrupt [...] |
8h |
Integral field spectroscopy to follow evolution of line shape |
May 7 - May 9, 2014 |
Gillessen |
NIR |
SINFONI/VLT |
Watching G2 disrupt [...] |
33h |
Integral field spectroscopy to follow evolution of line shape |
Aug 27 - Sep 3, 2014 |
Gillessen |
NIR |
SINFONI/VLT |
Watching G2 disrupt [...] |
12h |
Integral field spectroscopy to follow evolution of line shape |
Sep 27 - Oct 1, 2014 |
Gillessen |
NIR |
NACO/VLT |
Watching G2 disrupt [...] |
8h |
NIR imaging |
Sep 26 - Sep 30, 2014 |
Eckart |
NIR |
SINFONI/VLT |
Nature of variable SgrA* X-ray [...] |
12h |
simult. with XMM |
Feb 27 - Mar 2, 2014 |
Eckart |
NIR |
SINFONI/VLT |
Nature of variable SgrA* X-ray [...] |
23h |
simult. with XMM |
Mar 24 - Mar 27, 2014 |
Nishiyama |
NIR/MIR |
IRCS,HiCIAO,COMICS/Subaru, NIFS/Gemini |
Gas Cloud Accretion onto the SMBH Sgr A* [...] |
12h |
ToO: NIR spectroscopy, NIR polarimetry, or MIR imaging |
Feb - Jul 2014 |
Ponti |
X-ray |
XMM |
Monitoring a close encounter [...] |
4 x 54ks |
Two epochs per observing window |
2014 |
Grosso |
X-ray |
XMM |
|
53ks |
simult. with VLT |
2014-02-20 - 2014-02-28, 2014-03-08 - 2014-03-16, 2014-03-31 - 2014-04-08 |
Maeda |
X-ray |
Suzaku |
Weekly Monitoring of X-ray flares from Sgr A* |
180ks |
Monitoring weekly (20ksec each) during Suzaku visible windows |
Feb.-Apr. 2014 |
Degenaar |
X-ray |
Swift |
Continuing a Swift legacy: the monitoring campaign of the Galactic Center |
248ks |
Daily monitoring (1ks/obs) |
April 1, 2013 - March 31, 2014 |
Haggard |
X-ray |
Swift |
Swift Monitoring of the Encounter Between Sgr A* and the Gas Cloud G2 |
68ks |
Monitoring weekly, then twice weekly, then daily near pericenter (1ks/obs) |
April 1, 2013 - March 31, 2014 |
2013 Approved observing proposals
PI |
Band |
Instrument |
Title |
Allocated Time |
Strategy |
UT observing dates |
Hyman |
m |
VLA |
Monitoring for Radio Transients in the Galactic Center with the Low-Band System |
16 x 1.5h |
Biweekly monitoring of Sgr A* and for other transients with 200 MHz bandwidth |
September 2013 - May 2014 |
Takekawa |
cm (S/X) |
VLBI-NICT |
NICT VLBI Monitoring Observations of Sgr A* at 8 GHz and 2 GHz |
5h/day |
Monitoring of Sgr A* at 8 GHz and 2 GHz |
at least till May 2014 |
Ott |
cm |
VLA |
Molecular Absorption Survey against the G2 Cloud Sgr A* Accretion Event |
10h |
Spectrum across multiple bands |
triggered at a flux >6Jy, rms tau ~10^-3 |
Reid |
cm |
VLBA |
Astrometry of Sgr A*: Preparing for the Infall of a Gas Cloud |
2 x 2 x 6h |
Pre-encounter 22 and 43 GHz astrometry |
February 2013 |
Rushton |
cm |
VLA & VLBA |
Simultaneous radio and X-ray monitoring of the G2 encounter with Sgr A* |
2 x 8h |
Simultaneous with XMM |
|
public NRAO |
radio |
VLBA |
Angular size measurements and astrometry of SgrA* |
1 full track @ 2 bands |
single, pre-encounter, baseline measurement |
beginning of semester 2013A, eNews letter |
public NRAO |
radio |
VLA |
Continuum monitoring |
13 x 2hrs x 8 bands |
initially bimonthly, then monthly monitoring |
|
Tsuboi |
22 GHz |
VLBI (Japanese network) |
Daily Monitoring of Sgr A* at 22GHz with Japanese VLBI Network |
1h/day |
Daily monitoring of Sgr A* at 22GHz |
up to May 2014 |
Akiyama |
43 GHz |
VERA |
The multi-epoch VERA observations of the galactic center Sgr A* before and after the encounter with the Gas Cloud G2 |
15 x 6h |
Monitoring the radio flux and size at 43 GHz every three weeks |
Throughout 2013 except June and July |
Akiyama |
22 & 43 GHz |
KaVA |
Deep Imaging Observations of Sgr A* and the G2 Cloud with KVN+VERA |
4 full tracks @ 2 bands |
Quasi-simultaneous with EHT |
2013, March 23 - 26 |
Akiyama |
22 & 43 GHz |
KaVA |
Deep Imaging Observations of Sgr A* and the G2 Cloud with KVN+VERA |
4 full tracks @ 2 bands |
Quasi-simultaneous with GMVA |
2013, May 16-21 |
Akiyama |
22 & 43 GHz |
KaVA |
Deep Imaging Observations of Sgr A* and the G2 Cloud with KVN+VERA |
6 x 5hrs |
ToO: Imaging and Astrometry of Sgr A* |
|
Trippe |
86 GHz |
GMVA (4 European stations) |
Real-time Monitoring of Accretion onto a Supermassive Black Hole: Observing the 2013 Gas Infall Event at Sagittarius A* |
3 x 6 h |
Monitoring of closure phases, limited mapping |
May 16-21 |
Agudo |
1mm + 3mm |
IRAM 30m |
Monitoring the Encounter of a Gas Cloud with Sgr A* |
bi-weekly |
flux, linear polarization and rotation measure of Sgr A* |
throughout 2013 |
Yusef-Zadeh |
mm |
VLBA |
Joint VLBA/Chandra/EVLA Monitoring of the Gas Cloud G2 as it Encounters Sgr A* |
6 x 7h |
3mm monitoring with Chandra/VLA |
May 2013 |
Marrone |
millimeter |
SMA |
Polarization monitoring |
5 x 7hrs |
monthly monitoring of polarization and RM, Jan-May 2013 (to be reproposed for next semester) |
|
Haggard |
radio |
EVLA |
Joint Chandra/XMM/EVLA Monitoring of the Gas Cloud G2 as it Encounters Sgr A* |
6 x 7hrs |
Roughly monthly sampling near pericenter, simultaneous w/ Chandra obs |
1: May 23, 03:00 - 10:00 |
Bower |
millimeter |
ALMA |
The G2 Gas Cloud Encounter with Sagittarius A*: Accretion Structure on Scales of 3000 to 1 Schwarzschild Radii |
10 x 1hrs x 2 bands |
monthly monitoring beginning in 2013 |
|
Ott |
(sub)millimeter |
ALMA |
Molecular Absorption Survey against the G2 Cloud Sgr A* Accretion Event |
3.4h |
Spectrum across multiple bands |
triggered at a flux >6Jy, rms tau ~10^-3 |
Martin |
(sub)millimeter |
ALMA |
Fuelling the Galactic center super massive black hole |
|
|
|
Ho |
(sub)millimeter |
ALMA |
Proper Motions of Gas in the Immediate Vicinity of the Galactic Supermassive Black Hole |
|
|
|
Eckart |
submm |
APEX |
Differential L'-band spectroscopy of the Dusty S-cluster Object (DSO/G2) approaching SgrA* |
56h |
|
|
Gillessen |
NIR |
SINFONI/VLT |
Watching a gas cloud disrupt [...] |
70h |
Two epochs of deep integral field spectroscopy to follow evolution of line shape |
|
Gillessen |
NIR |
NACO/VLT |
Watching a gas cloud disrupt [...] |
20h |
ToO: If SgrA* changes in 2013, get multi-band lightcurves |
|
Ghez |
NIR |
Keck/OSIRIS & NIRC2 |
A LGS-AO Study of our Galaxy's Central Black Hole and its Environs |
18 x half-nights (~80 hours) |
Deep Imaging & Spectroscopy of the central arcsec |
|
Eckart |
NIR |
NACO/VLT |
Differential L'-band spectroscopy of the Dusty S-cluster Object (DSO/G2) approaching SgrA* |
10h |
|
|
Eckart |
NIR |
NACO/VLT |
Nature of variable SgrA* X-ray and polarized NIR flares: Probing the accretion stream and source variability during the passage of DSO/G2 |
20h |
|
|
Eckart |
NIR |
ISAAC/VLT |
Nature of variable SgrA* sub-mm and NIR flares: ISAAC probing the accretion stream and bright source variability during the passage of DSO/G2 |
28h |
|
|
Nishiyama |
NIR/MIR |
IRCS, HiCIAO, COMICS/Subaru |
Gas Cloud Accretion onto the SMBH SgrA* |
15h |
ToO: NIR spectroscopy, NIR polarimetry, or MIR imaging |
|
Baganoff |
X-ray |
Chandra |
Monitoring the Tidal Disruption of a Gas Cloud Approaching Sgr A* |
6 x 20ksec |
Roughly monthly sampling around pericenter time |
|
Ponti |
X-ray |
Chandra / HETG |
X-ray monitoring of Sgr A* during outburst |
280ksec |
ToO: If SgrA* gets brighter than Lx = 10^36 erg/s |
|
Haggard |
X-ray |
Chandra |
Joint Chandra/XMM/EVLA Monitoring of the Gas Cloud G2 as it Encounters Sgr A* |
6 x 50ksec |
Roughly monthly sampling around pericenter time |
|
Haggard |
X-ray |
XMM |
Joint Chandra/XMM/EVLA Monitoring of the Gas Cloud G2 as it Encounters Sgr A* |
1 x 30ksec |
Single obs. near pericenter |
|
Ponti |
X-ray |
XMM |
Capturing a major accretion event of Sgr A* |
230ks |
ToO: If Sgr A* becomes brighter than 10^35 erg/s |
|
Ponti |
X-ray |
XMM |
Monitoring Sgr A* |
100ks |
Monitoring the cloud-SgrA* interaction |
2x50ks |
Grosso |
X-ray |
XMM |
|
150ks |
|
3x50ks |
Zhang |
X-ray |
NuSTAR |
|
40ks |
|
2013-04-26 01:00 to 2013-04-26 21:30 |
Degenaar |
X-ray |
Swift |
Swift/XRT monitoring observations of the Galactic Center region |
82ks |
Bi-weekly monitoring (1ks/obs) |
April 1, 2012 - March 31, 2013 |
Degenaar |
X-ray |
Swift |
Continuing a Swift legacy: the monitoring campaign of the Galactic Center |
248ks |
Daily monitoring (1ks/obs) |
April 1, 2013 - March 31, 2014 |
Haggard |
X-ray |
Swift |
Swift Monitoring of the Encounter Between Sgr A* and the Gas Cloud G2 |
68ks |
Monitoring weekly, then twice weekly, then daily near pericenter (1ks/obs) |
April 1, 2013 - March 31, 2014 |
Morris |
X-ray |
Suzaku |
Capturing a major accretion event of Sgr A* |
200ks |
ToO: if Swift > 5 x 10^35 erg/s |
|
Maeda |
X-ray |
Suzaku |
Weekly Monitoring of X-ray flares from Sgr A* |
180ks |
Monitoring weekly (20ksec each) during Suzaku visible windows (Aug.-Oct. 2013, Feb.-Apr. 2014) |
|
Sunyaev |
Gamma |
INTEGRAL |
Forthcoming major outburst of Sgr A*? Once in a life-time chance for INTEGRAL |
2000 ksec |
ToO |
|
Wilms |
Gamma |
INTEGRAL |
Observing the Galactic Center Region with INTEGRAL |
1000 ksec |
|
|
Kuulkers |
Gamma |
INTEGRAL |
Regular and frequent INTEGRAL monitoring of the Galactic Bulge region |
479 ksec |
|
|
Yusef-Zadeh |
Gamma |
Fermi |
The Gamma-ray Variability of Sgr A* Induced by an Infalling Cloud |
duration of flare |
ToO: LAT flux >5x10-6 ph/cm2/s or enhanced Lx |
|
MAGIC-Collaboration |
VHE |
MAGIC |
Monitoring of the GC at large zenith angle |
60h |
20 hr/yr + ToO |
April - July (2013) |
2013 Submitted observing proposals
PI |
Band |
Instrument |
Title |
Time Applied For |
Strategy |
Expected decision |
HESS collaboration |
Gamma |
HESS |
Watching the close encounter of a gas cloud with the galactic center in TeV light |
60 hours + TOO |
March - May 1 hour every 4 days, June - July 1 hour every 3 days, Aug - Sep. 1 hour every 2 days + TOO flux > 2.5x10-11 cm-2 s-1 |
Jan 30 2013 |