NICER Astronomical Telegrams

(most recent first)
  • 14916: Follow-up observations of SGR 1935+2154 with NICER (Guver et al., 14 Sep 2021)
  • 14911: NICER observations during the rise and extended bright phase of the current giant outburst of EXO 2030+375 (Thalhammer et al., 12 Sep 2021)
  • 14901: Spectral and flux variability in NICER observations and optical spectra of RS Oph (Pei et al., 6 Sep 2021)
  • 14872: NuSTAR, NICER and optical observation of RS Oph. (Luna et al., 24 Aug 2021; also see the associated erratum, ATEL #14873)
  • 14864: X-ray brightening and softening of RS Ophiuchi monitored with NICER (Enoto et al., 17 Aug 2021; preliminary NICER RS Oph lightcurve)
  • 14850: NICER X-ray observations of the recurrent nova RS Ophiuchi (Enoto et al., 11 Aug 2021)
  • 14818: NICER follow up of the new X-ray transient Swift J1729.5-3223
  • 14769: NICER detects a type I X-ray burst from 4U 1730-22 (Bult et al., 9 Jul 2021)
  • 14767: NICER Follow-up of the UCXB MAXI J0911-655 (Ng et al., 8 Jul 2021)
  • 14725:NICER observations of 4U 1543-47: brightest (NICER) black hole target to date (Connors et al., 17 Jun 2021)
  • 14695: NICER detection of the X-ray pulsation of Bursting Pulsar GRO J1744-28 (Ng et al., 10 Jun 2021)
  • 14684: NICER measurement of the period derivative of magnetar Swift J1555.2-5402 (Ng et al., 8 Jun 2021)
  • 14669: NICER follow-up observations of 4U 1705-32 (Bult et al., 29 May 2021)
  • 14664: X-ray dimming and hardening, a newly launched X-ray outflow, and optical dimming of the nuclear transient AT2019avd/eRASStJ082337+042303/ZTF19aaiqmgl: NICER observations (Pasham et al., 27 May 2021)
  • 14660: NICER detection of Type-B QPOs in follow-up observations of MAXI J1803-298 (Ubach et al., 25 May 2021)
  • 14606: NICER detection of possibly periodic X-ray absorption dips in MAXI J1803-298 (Homan et al., 6 May 2021)
  • 14602: NICER follow-up observations of MAXI J1803-298 (Bult et al., 5 May 2021)
  • 14588: NICER detection of the new X-ray transient MAXI J1803-298 (Gendreau et al., 2 May 2021; also see erratum 14589)
  • 14559: NICER detection of periodicity in the new X-ray transient MAXI J0901-531 (Ray et al., 18 Apr 2021)
  • 14545: NICER observations the new X-ray transient SWIFT J174038.1-273712 (Sanna et al., 13 Apr 2021)
  • 14527: NICER follow-up of SRGA J181414.6-225604 (Bult & Gendreau, 07 Apr 2021)
  • 14495: NICER and Swift observations of the new outburst of MAXI J1820+070 (Homan et al., 30 Mar 2021)
  • 14490: NICER X-ray activity shows GX 339-4 undergoing a rapid state transition (Wang et al., 28 Mar 2021)
  • 14457: NICER follow-up of the Be X-ray pulsar Swift J1626.6-5156 (Iwakiri et al., 14 Mar 2021)
  • 14442: NICER follow up of the new X-ray transient IGR J17533-2928 (Sanna et al., 06 Mar 2021)
  • 14429: NICER Spectroscopy of MAXI J1848-015 in the Stellar Cluster GLIMPSE-C01 (Miller et al., 02 Mar 2021)
  • 14428: NICER detects pulsations from Swift J1749.4-2807 (Bult et al., 02 Mar 2021)
  • 14406: Resumed NICER observations of the magnetar SGR 1830-0645 (Younes et al., 19 Feb 2021)
  • 14384: NICER X-ray activity indicates GX 339-4 rising in hard state (Wang et al., 10 Feb 2021)
  • 14342: NICER follow-up observations of the flaring blazar BL Lacertae (D'Ammando, 22 Jan 2021)
  • 14317: Cen X-4 returns to quiescent levels in X-ray, optical, and UV (van den Eijnden et al., 12 Jan 2021)
  • 14303: Swift and NICER X-ray monitoring of the probable new outburst of Cen X-4 (van den Eijnden et al., 06 Jan 2021)
  • 14248: NICER X-ray observations of the tidal disruption event AT2020ksf/ZTF20abgbdpr/Gaia20cjk/SRGeJ213527.3-181634 (Pasham et al. 03 Dec 2020)
  • 14202: NICER observations of 4FGL J0658.6+0636, candidate counterpart to the IceCube neutrino event IceCube-201114A (Pasham et al., 20 Nov 2020)
  • 14179: NICER and NuSTAR observations of the Be/X-ray binary pulsar 1A 0535+262 during the 2020 November giant outburst (Gaurava et al., 15 Nov 2020)
  • 14124: NICER detection of 376 Hz X-ray pulsations from IGR J17494-3030 (Ng et al., 27 Oct 2020)
  • 14112: NICER confirmation of the magnetar nature of SGR 1830-0645: Spindown, spectra, and short bursts (Ray et al., 22 October 2020)
  • 14096: NuSTAR and NICER follow-up observations of the flaring blazar BL Lacertae (D'Ammando, 15 October 2020)
  • 14056: NICER detects pulsations from a new outburst of the accreting millisecond X-ray pulsar IGR J17379-3747 (Bult et al., 1 October 2020)
  • 14036: X-ray flaring of the nuclear transient AT2019avd/eRASStJ082337+042303: Swift and NICER observations (Pasham et al., 21 September 2020)
  • 13932: X-ray Brightening of AT2019wey (Yao et al., 10 August 2020)
  • 13864: NICER X-ray observations of the Tidal Disruption Event (TDE) candidate AT2020ocn (Pasham et al., 13 July 2020)
  • 13830: NICER detection of pulsations from RX J0529.8-6556 (G. Vasilopoulos et al., 23 June 2020)
  • 13760: NICER observes the tail of a long-duration X-ray burst in the direction of MAXI J0911-655 (Bult et al., 24 May 2020)
  • 13749: NICER observations of GRO J1008-57 (Reynolds et al., 21 May 2020)
  • 13270: X-ray monitoring of the active magnetar SGR 1935+2154 (Borghese et al., 8 May 2020)
  • 13678: Burst forest from SGR 1935+2154 as detected with NICER (Younes et al. 28 Apr 2020)
  • 13636: Eta Carinae's Recovery from the 2020 X-ray Minimum as Seen by NICER (Espinoza et al., 15 Apr 2020)
  • 13588: NICER follow-up observation and a candidate timing anomaly from Swift J1818.0-1607 (Hu et al., 25 Mar 2020)
  • 13563: NICER and NuSTAR detections of Type I bursts and periodic dips in Swift J1858.6-0814 (Buisson et al., 18 Mar 2020)
  • 13551: NICER detection of 1.36 sec periodicity from a new magnetar, Swift J1818.0-1607 (Enoto et al., 13 Mar 2020)
  • 13539: X-ray and near-infrared observation of rebrightening of MAXI J1348-630 (Oeda et al., 3 Mar 2020)
  • 13536: NICER detection of flux increase and spectral state change in Swift 1858.6-0814 (Buisson et al., 2 Mar 2020)
  • 13516: NICER Observations of the 2020 X-ray Minimum of eta Carinae (Corcoran et al., 23 Feb 2020)
  • 13456: Initial NICER observations of the GRB 200205A = Swift J0840.7-3516 and detection of short X-ray flaring activity (Iwakiri et al., 7 Feb 2020)
  • 13443: NICER observations of the new outburst of V4641 Sgr (Altamirano et al., 4 Feb 2020)
  • 13427: Transition of MAXI J0637-430 to the Hard State Seen with NICER (Remillard et al., 30 Jan 2020)
  • 13327: An X-ray Flare from eta Carinae as seen by NICER (Corcoran et al., 03 Dec 2019)
  • 13309: NICER detection of 9.29 s pulsations from RX J0209.6-7427 (Iwakiri et al., 22 Nov 2019)
  • 13308: NICER detection of a strong X-ray flare from GRS 1915+105 (Homan et al., 22 Nov 2019)
  • 13239: NICER detection of two thermonuclear (Type I) X-ray bursts establishes that MAXI J1807+132 hosts a neutron star (Arzoumanian et al., 29 Oct 2019)
  • 13221: NICER observations of late-time X-ray brightening of the tidal disruption event candidate AT2019azh (Pasham et al., 23 Oct 2019)
  • 13173: NICER observations of the X-ray transient MAXI J1807+132: flaring activity (Rapidsarda et al., 8 Oct 2019)
  • 13148: NICER observes increasing luminosity from XTE J1739-285 (Bult et al., 30 Sep 2019)
  • 13139: NICER observations of the X-ray transient MAXI J1807+132 (Rapisarda et al., 27 Sep 2019)
  • 13132: NICER follow-up of rapidly variable and rising nuclear transient AT2019pev (Kara et al., 26 Sep 2019)
  • 13086: NICER detection of a 83 s periodicity in the super-soft source emission from V3890 Sgr (Beardmore et al., 7 Sep 2019)
  • 13077: NICER detects a high luminosity reflare from SAX J1808.4-3658 (Bult et al., 4 Sep 2019)
  • 13001: NICER detects X-ray pulsations from the rapidly brightening SAX J1808.4-3658 (Bult et al., 7 Aug 2019)
  • 12976: NICER detection of QPOs from EXO 1846-03 (Bult et al., 1 Aug 2019)
  • 12882: NICER and SWIFT/XRT detect a new outburst of the accreting millisecond X-ray pulsar SWIFT J1756.9-2508 (Sanna et al., 22 June 2019)
  • 12869: NICER follow-up observations of the accreting millisecond X-ray pulsar MAXI J0911-655 (Bult et al., 14 June 2019)
  • 12825: NICER X-ray observations of the young tidal disruption flare candidate AT2019dsg (Pasham et al., 31 May 2019)
  • 12801: X-ray activity of Swift J1357.2-0933 detected by NICER (Gandhi et al., 23 May 2019)
  • 12793: A Bright Flare from GRS 1915+105 with NICER (Neilsen et al., 22 May 2019)
  • 12742: A sudden dimming of GRS 1915+105 in X-rays (Homan et al., 10 May 2019)
  • 12686: Soft X-rays from the direction of the Type Ia SN AT2019daj are not associated with the supernova but from foreground diffuse emission within our own Galaxy (Pasham et al., 25 Apr 2019)
  • 12672: NICER detects X-rays from the direction of the Type Ia supernova AT2019daj (Gendreau et al., 19 Apr 2019)
  • 12652: NICER Observations of the new outburst from XTE J1908+094 (Ludlam et al., 11 Apr 2019)
  • 12617: MAXI/GSC detection of a bright X-ray burst from XTE J1701-407 (Iwakiri et al., 01 Apr 2019)
  • 12580: NICER observations of the ongoing X-ray outburst from SAX J1747.0-2853 (Sanna et al. 15 Mar 2019)
  • 12515: NICER observation of the transient high mass X-ray binary pulsar 4U 1901+03 (Jaisawal et al., 18 Feb 2019)
  • 12484: NICER follow-up observation of the transient magnetar XTE J1810-197 (Guver et al., 8 Feb 2019)
  • 12455: NICER follow-up observations of the transient system Swift J1728.9-3613 (Enoto et al., 30 Jan 2019)
  • 12447: NICER identification of MAXI J1348-630 as a probable black hole X-ray binary (Sanna et al., 29 Jan 2019)
  • 12440: NICER Observes Transition to the Intermediate State in MAXI J1631-479 (van den Eijnden et al., 28 Jan 2019)
  • 12248: MAXI and NICER observations of a long flare from UX Ari (Iwakiri et al., 29 Nov 2018)
  • 12222: Identification of Swift J005139.2-721704 with the transient SMC pulsar XTE J0052-723 (SXP 4.78) (Strohmayer et al., 16 Nov 2018)
  • 12219: NICER observations of the new transient SWIFT J005139.2-721704 in the Small Magellanic Cloud (Guillot et al., 15 Nov 2018)
  • 12169: Rapid Accretion Episode in Seyfert Galaxy 1ES 1927+654 (Kara et al., 5 Nov 2018)
  • 12158: Initial NICER observation of the new X-ray transient Swift J1858.6-0814 (Ludlam et al., 2 Nov 2018)
  • 12068: MAXI J1820+070 continuing its rapid evolution toward the hard state (Homan et al., 28 Sep 2018)
  • 12050: IGR J17591-2342 second re-brightening observed with NICER (Ray et al., 19 Sep 2018)
  • 11960: The 55 Hz signal we detected in MAXI J 1820+070 is not a QPO (Zhang et al., 17 Aug 2018)
  • 11957: IGR J17591-2342 is a 527-Hz accreting millisecond pulsar in outburst (Ferrigno et al., 16 Aug 2018)
  • 11951: Detection of a 55 Hz high-frequency QPO in MAXI J1820+070 with NICER (Zhang et al., 14 Aug 2018)
  • 11823: Continuing NICER observations of the state transition in ASASSN-18ey/MAXI J1820+070(Homan et al., 06 Jul 2018)
  • 11821: NICER X-ray Observations of Cyg X-3 During the Recent Gamma Ray Bright State (Corcoran et al. 06 Jul 2018)
  • 11820: A rapid state transition in MAXI J1820+070 (Homan et al. 05 Jul 2018)
  • 11773: An Initial NICER Observation of AT2018cow = ATLAS18qqn (Miller et al., 23 Jun 2018)
  • 11771: NICER Observation of Strong Wind Absorption in the Soft Outburst of 4U 1630-47 (Neilsen et al., 23 Jun 2018)
  • 11689: NICER detection of the new X-ray transient MAXI J1727-203 (Ludlam et al., 6 Jun 2018)
  • 11581: Further NICER observations of the accreting millisecond pulsar Swift J1756.9-2508 (Bult et al., 27 Apr 2018)
  • 11576: NICER observations of MAXI J1820+070: Continuing evolution of X-ray variability properties (Homan et al., 26 Apr 2018)
  • 11507: NICER discovers millisecond pulsations from the neutron star LMXB IGR J17379-3747 (Strohmayer et al., 6 Apr 2018)
  • 11502: NICER Detects Pulsations from Swift J1756.9-2508 (Bult et al., 5 Apr 2018)
  • 11423: NICER observations of MAXI J1820+070 suggest a rapidly-brightening black hole X-ray binary in the hard state (Uttley et al., 15 Mar 2018)
  • 11327: NICER follow-up observations of the magnetar 1E 1048.1-5937 (Guver et al., 21 Feb 2018)
  • 10824: NICER Observation of Fast X-ray Flares in GX 339-4 (Remillard et al., 05 Oct 2017); (figures )
  • 10768: Initial NICER observations of a broadened iron line and QPOs in MAXI J1535-571 (Gendreau et al., 22 Sep 2017)