== 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 || [[ VlaSchedule | VLA schedule ]] & [[ VlbaSchedule | VLBA schedule ]] || ||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, [[https://science.nrao.edu/enews/5.10/index.shtml#g2_encounter |eNews letter ]] || ||public NRAO || radio || VLA || Continuum monitoring || 13 x 2hrs x 8 bands || initially bimonthly, then monthly monitoring || [[ https://science.nrao.edu/enews/5.10/index.shtml#g2_encounter | eNews letter ]] || || 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 || [[VLTP91 |VLT times ]] || || Gillessen || NIR || NACO/VLT || Watching a gas cloud disrupt [...] || 20h || ToO: If SgrA* changes in 2013, get multi-band lightcurves || [[VLTP91 |VLT times ]] || || 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 || || [[VLTP91 |VLT times ]] || || 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 || || [[VLTP91 |VLT times ]] || || 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 || || [[VLTP91 |VLT times ]] || || 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 || [[ ChandraSchedule | Chandra schedule ]] || ||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 || [[ ChandraSchedule | Chandra schedule ]] || ||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/cm^2^/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 ||