NuSTAR ToO targets approved within the NuSTAR, Chandra, XMM-Newton, Swift, NICER, and INTEGRAL General Observer programs
NuSTAR Target of Opportunity (ToO) observations may be proposed for in the NuSTAR, Chandra, XMM-Newton, Neil Gehrels Swift Observatory, NICER mission, and INTEGRAL General Observer (GO) programs.
Last update: 2024-09-03
Proposal title and abstracts are available here, or click on the Proposal number in the table below. Note that NuSTAR ToO and DDT observations may be requested at any time through the ToO/DDT observation request form which provides a list of currently active unanticipated ToO/DDT targets.
Proposals will be marked with an orange background when they are triggered and a green background when they are completed. Targets that have yet to be identified have blank J2000 coordinates.
NuSTAR GO ToO programs | |||||||
---|---|---|---|---|---|---|---|
Proposal | ObsID | Target Name | Comments | ||||
09029 | Kaya Mori | 80960303-15 | Polar WD in high accretion | 13 x 20 | Multi-cycle ToO program | ||
09029 | Kaya Mori | 80960301 | VV Pup | 123.778337 | -19.054935 | 20 | Triggered 2023-06-08 |
09029 | Kaya Mori | 80960302 | V1033 Cen | 175.344731 | -64.170655 | 20 | Triggered 2024-02-26 |
09108 | Reshmi Mukherjee | 80902634 | PKS 0446+11 | 72.282 | 11.357 | 2 x 40 | Triggered 2024-01-10Coordinated with Swift and VERITAS |
09138 | Marina Orio | 80902337 | New Symbotic Nova | 3 x 20 | Multi-cycle ToO program | ||
09180 | Megumi Shidatsu | 80901338 | Disk-wind black hole binary | 50 | Coordinated with XRISM | ||
09235 | Aarran Shaw | 80902342 | GX 339-4 | 255.70579 | -48.78975 | 2 x 20 | Triggered 2024-02-22Coordinated with JWST |
80902343 | Black hole LMXB | 2 x 20 | Coordinated with JWST | ||||
10066 | Jennifer Sokoloski | 81002321 | T CrB | 239.87567 | 25.92017 | 2x20 | Coordinated with NICER |
10087 | Gaurava Jaisawal | 81001322 | 4U 1820-30 | 275.91904 | -30.36128 | 45 | Coordinated with NICERtriggered 2024-07-02 |
10090 | Kaya Mori | 81001323 | GC X-RAY Transient 1 | 20 | Multi-cycle ToO program | ||
10090 | Kaya Mori | 81001324 | GC X-RAY Transient 2 | 20 | |||
10097 | Raffaella Margutti | 81002425 | Interacting SN | 3x40 | Coordinated with Swift | ||
10100 | Raffaella Margutti | 81002426 | Compact Object GW1 | 4x40 | |||
10100 | Raffaella Margutti | 81001427 | Compact Object GW2 | 40 | |||
10103 | Yuhan Yao | 81001628 | ZTF24aaoxmyb | 252.725603 | 32.876719 | 50 | Coordinated with SwiftTriggered 2024-07-01 |
10103 | Yuhan Yao | 81001629 | TDE2 | 50 | Coordinated with Swift | ||
10112 | Qi Feng | 81002630 | Candidate Neutrino Blazar | 2x40 | Coordinated with Swift & VERITAS | ||
10134 | Riccardo Middei | 81001631 | MRK 421 | 166.11379 | 38.20883 | 40 | Coordinated with IXPE ToO & MAGIC/VERITASObserve one of these targets |
10134 | Riccardo Middei | 81001632 | MRK 501 | 253.46758 | 39.76017 | 0 | |
10134 | Riccardo Middei | 81001633 | 1ES 0033+595 | 8.969 | 59.8345 | 0 | |
10134 | Riccardo Middei | 81001634 | 1ES 1959+650 | 299.99938 | 65.1485 | 0 | |
10134 | Riccardo Middei | 81001635 | 1ES 1218+304 | 185.34142 | 30.177 | 0 | |
10134 | Riccardo Middei | 81001636 | 1ES 1011+496 | 153.76725 | 49.43353 | 0 | |
10171 | Jiachen Jiang | 81002337 | SWIFT J0243.6+6124 | 40.91846 | 61.43439 | 3x20 | Coordinated with NICER |
10182 | Dheeraj Pasham | 81002638 | Relativistic TDE | 20+20+40 | Coordinated with NICER | ||
10185 | Kirill Sokolovsky | 81002339 | New Nova | 3x50 | |||
10191 | Mirko Krumpe | 81002640 | Changing look AGN | 2x150 | Coordinated with XMM | ||
10198 | Andrea Gokus | 81001641 | High-Z Blazar | 100 | |||
10216 | Javier Garcia | 81002342 | BHB outburst monitoring | 3x30 10x20 2x30 3x50 | Coordinated with NICER | ||
10220 | Megumi Shidatsu | 81001343 | Low inclination Black Hole Binary | 30 | Coordinated with XRISM & SwiftNo XRISM ToO selected - program suspended | ||
81001344 | High inclination Black Hole Binary | 30 | |||||
10245 | Guglielmo Mastroserio | 81002345 | GX 339-4 | 255.70579 | -48.78975 | 3x20 | Coordinated with IXPE |
10246 | Daniel Lawther | 81001646 | MRK 590 | 33.63983 | -0.76672 | 90 | Coordinated with XMMTriggered 2024-06-29 |
10249 | Sean Pike | 81002347 | Unknown MAXI Source 1 | 2x20 | |||
10249 | Sean Pike | 81002348 | Unknown MAXI Source 2 | 2x20 | |||
10249 | Sean Pike | 81002349 | Unknown MAXI Source 3 | 2x20 | |||
10251 | Peter Kosec | 81002350 | Hercules X-1 | 254.45754 | 35.34236 | 2x20 | Coordinated with ChandraTriggered 2024-08-15 |
10257 | Amruta Jaodand | 81002351 | X-BNS | 100+75+75 | |||
10267 | Jon Miller | 81001652 | PG 1211+143 | 183.57362 | 14.05367 | 80 | Coordinated with XRISMNo XRISM ToO selected - program suspended |
81001653 | MRK 817 | 219.092 | 58.79428 | 100 | |||
10268 | Benjamin Coughenour | 81001354 | Transient BH XRB | 50 | Coordinated with NICER | ||
10309 | Oluwashina Adegoke | 81002355 | Blackhole Binaries | 3x25 | Coordinated with NICER | ||
Joint NuSTAR/Chandra GO ToO programs | |||||||
25400276 | Kosec | 81002301 | LMC/SMC ULX | 3x20 | |||
25400338 | Neilsen | 81002302 | Black Hole Transient | 4x25 | |||
25500335 | Margutti | 81002403 | AT2024qfm | 350.347753 | 11.942232 | 2x25 + 2x40 | Triggered 2024-08-01 |
26400066 | Peter Kosec | 81102301 | Magellanic Clouds ULX transient | 3x20 | Chandra cycle-26 begins on 2026-01-01 | ||
26400115 | Kaya Mori | 81102302 | GC VFXT | 2x20 | Chandra cycle-26 begins on 2026-01-01 | ||
26400240 | Joey Neilsen | 81102303 | Black hole state transition | 4x25 | Chandra cycle-26 begins on 2026-01-01 | ||
26500151 | Raffaella Margutti | 81102404 | Interacting SN | 2x50 | Chandra cycle-26 begins on 2026-01-01 | ||
Joint NuSTAR/XMM-Newton GO ToO programs | |||||||
094004 | Norbert Schartel | 81001611 | RQ AGN outburst 1 | 50 | Coordinated with SALT or HET | ||
094004 | Norbert Schartel | 81001612 | RQ AGN outburst 1 | 50 | Coordinated with SALT or HET | ||
094084 | Rafaella Margutti | 81002513 | SNinteracting | 2x50 | |||
094134 | Erin Kara | 81001614 | Mrk 817 | 219.091958 | 58.794269 | 60 | Coordinated with HST |
094209 | Michael Nowak | 81001315 | 4U 1957+11 | 299.850042 | 11.708294 | 20 | |
094218 | Murray Brightman | 81001516 | NGC 4045 ULX | 180.676208 | 1.96925 | 100 | Coordinated with Swift monitoring |
094376 | Samuel Barnier | 81002317 | BH XRB outburst | 10x20 | |||
094484 | Maxime Parra | 81002318 | BH LMXB outburst | 10x20 | Coordinated with Swift monitoring | ||
Joint NuSTAR/INTEGRAL GO ToO programs | |||||||
2140005 | Maria Teresa Fiocchi | 81001319 | Ultra-compact XRB | 25 | |||
2140012 | Ingo Kreykenbohm | 81001320 | Transient pulsar | 40 | |||
Joint NuSTAR/Swift GO ToO programs | |||||||
1821098 | Kirill Sokolovsky | 80801310 | New Nova | 40 | |||
1821161 | Maria-Carla Nicotra | 80801311 | FRB1 | 20 | |||
1821161 | Maria-Carla Nicotra | 80801312 | FRB2 | 20 | |||
1922051 | Liliana Rivera Sandoval | 80902423 | Fast-evolving luminous transient | 3x20 | Swift cycle-19 begins on 2023-04-01 | ||
Joint NuSTAR/NICER GO ToO programs | |||||||
06039 | Teruaki Enoto | 80902311 | Magnetar Outburst | 20+30+50 | Coordinated with DSN | ||
06057 | Fiamma Capitanio | 80902312 | 4U 1630-47 | 248.50671 | -47.39300 | 3x20 + 20 | Triggered 2023-03-07 Coordinated with IXPE |
06057 | Fiamma Capitanio | 80902313 | SwiftJ1727.8-1613 | 261.930583 | -16.205322 | 4x20 | Triggered 2023-09-04 Coordinated with IXPE |
06078 | Yuhan Yao | 80901615 | Tidal Disruption Event | 50 | |||
06113 | Adam Ingram | 80902316 | GRS 1915+105 | 288.798167 | 10.945806 | 3x20 | Coordinated with IXPE |
06141 | Jingyi Wang | 80902317 | Transient BH Binary | 3x20 | |||
06143 | James Steiner | 80902318 | Cygnus X-1 | 299.590333 | 35.201611 | 3x20 | Coordinated with IXPE Triggered 2023-04-07 |
06197 | Joseph Neilsen | 80901320 | GRS 1915+105 | 288.798167 | 10.945806 | 25 | |
06203 | Paul Draghis | 80901321 | SwiftJ1727.8-1613 | 261.930583 | -16.205322 | 30 | Triggered 2023-08-28 |
80901321 | BH transient #2 | 30 | |||||
07041 | Alice Borghese | 81001304 | Magnetar outburst #1 | 20 | |||
07041 | Alice Borghese | 81001304 | Magnetar outburst #2 | 20 | |||
07082 | Teruaki Enoto | 81002306 | 1E 1841-045 | 280.330596 | -4.936433 | 20+30+50 | Triggered 2024-10-04 |
07126 | Gugleilmo Mastroserio | 81001307 | Black hole transient | 50 | |||
07141 | Muryel Guolo | 81001608 | New TDE | 50 | |||
07164 | Keigo Fukumura | 81002309 | MAXI J1810-222 | 273.17 | -22.31 | 3x20 | |
07170 | Edward Nathan | 81001310 | GRS1915+105 | 288.798167 | 10.945806 | 30 |