NICER Science Nuggets

Each week, the NICER team summarizes important scientific activities or results utilizing data from the NICER mission.

Here are past Science Nuggets listed by topic. A chronological index is also available.

Accreting Black Hole Systems:

• 17 October 2024: Dissecting a heartbeat
• 12 September 2024: The TDE-QPE Connection
• 19 September 2024: Black-hole X-rays get a boost
• 15 August 2024: How does a black hole flicker?
• 25 July 2024: Modeling a wobbly disk
• 18 July 2024: A second black-hole plunge
• 11 July 2024: Black-hole polarization, trending
• 6 June 2024: Testing EMRI models with 3.5 years of data
• 30 May 2024: Taking the plunge
• 23 May 2024: Relativistic precession of a newly-formed accretion disk
• 28 March 2024: A supermassive black hole's "hiccups"
• 25 January 2024: Exploring the extraordinary eruptions of not-so-quiescent galaxies
• 14 December 2023: Evidence for a rapidly dynamic corona
• 16 November 2023: Sizing up the soft excess from galaxy cores
• 12 October 2023: Accretion in Transition
• 14 September 2023: Quasi-predictability of black hole transients
• 7 September 2023: Do lags propagate or reverberate?
• 31 August 2023: An Exceptional Black-Hole Outburst
• 06 July 2023: Unusual Oscillations in a Black Hole Binary System
• 29 June 2023: A NICER take on a polarizing black-hole view
• 08 June 2023: Using NICER data to teach a machine
• 18 May 2023: Piercing the veil
• 11 May 2023: Live to die another day: a recurring partial stellar disruption
• 20 April 2023: Answers blowing in the wind
• 09 March 2023: Peculiar X-ray flares in a supermassive black hole binary candidate
• 02 February 2023: Knowing a black hole by its colors
• 12 January 2023: A black-hole awakens after a nearly 25-year nap
• 22 December 2022: A Pair of Telescopes Discerns a Pair of Coronae
• 03 November 2022: NICER assists on first X-ray polarization measurement of a black-hole binary
• 05 May 2022: NICER Feeds a Reverberation Machine
• 7 April 2022: NICER Confirms X-ray "Heartbeats" from IGR J17091-3642
• 31 March 2022: NICER engages in global supermassive black-hole campaign
• 24 March 2022: Anticipating an X-ray heartbeat
• 10 March 2022: Attentive to Accretion Echoes
• 13 January 2022: NICER Probes the Accretion Flow near a Black Hole
• 21 October 2021: Ironing Out a Black Hole Binary
• 14 October 2021: NICER Evidence of a Black-hole Disk Wind
• 23 September 2021: NICER Collaborates on a Spectral and Variability Study of the Blazar Prototype BL Lacertae
• 08 July 2021: NICER Connects the Dots in Accretion States of Black Hole Binaries
• 24 June 2021: NICER Observes the Brightest Black Hole Transient in Over a Decade
• 03 June 2021: NICER Captures the Likely Launch of a Wind by a Supermassive Black Hole
• 01 April 2021: The Transition of GX 339-4
• 25 March 2021: NICER teams up with multi-wavelength facilities to study the Galactic black hole system MAXI J1820+070
• 18 March 2021: NICER Captures the Formation of an X-ray "Corona" around a Supermassive Black Hole after it Shreds a Star
• 18 February 2021: A Changing Look for NICER<
• 11 February 2021: NICER studies a Black Hole Binary in Outburst
• 21 January 2021: A Blazar Blazing
• 22 October 2020: Coordinated Blazar
• 24 September 2020: NICER observes a very bright X-ray flare from an accreting supermassive black hole 400 Million Years Ago
• 17 September 2020: NICER reveals that the X-ray transient MAXI J1348-630 is a Likely Black Hole X-ray binary
• 23 July 2020: NICER Finds a Black Hole in MAXI J1727-203
• 09 July 2020: Type-B QPO detected in NICER observation of MAXI J1348-630
• 11 June 2020: Paper examines link between outbursts and reflares in transient LMXBs
• 12 March 2020: X-ray flaring in MAXI J1820+070 probes emission near black hole
• 20 February 2020: Modeling "reflected" X-rays in NICER data for Low Mass X-ray Binaries
• 30 January 2020: NICER observes the unusual black hole binary MAXI J0637-430
• 23 January 2020: NICER catches a "Changing-Look AGN" in then process of changing
• 06 February 2020: Earth's shadow provides viewing window for V4641 Sgr
• 16 January 2020: Highest frequency QPOs seen by NICER to date reported from EXO 1846-031
• 05 December 2019: Simultaneous X-ray and Optical observations of MAXI J1820+070
• 21 November 2019: Recent flaring in GRS 1915+105 shows unusual spectral signature
• 17 October 2019: Recent AGN flare a member of a new class of transients
• 29 August 2019: Peering into a clouded black hole
• 20 June 2019: Observations of X-ray variability used to map accretion disk in Fairall 9
• 23 May 2019: Rapid flare from GRS 1915+105 displays remarkable spectral features
• 17 May 2019: Record-low flux reported for black-hole binary GRS 1915+105
• 11 April 2019: NICER Observations of the Recurrent Black Hole Transient, XTE J1908+094
• 28 March 2019: State transition and radio flare in MAXI J1820+070
• 05 October 2018: The 2018 outburst of MAXI J1820+070 as seen with NICER
• 28 June 2018: NICER observes 4U 1630-47, a black hole with frequent outbursts
• 15 June 2018: X-ray emission line reveals warped disk in MAXI J1535-571
• 07 June 2018: NICER observes unusual variability in GRS 1915+105
• 17 May 2018: NICER/NuSTAR joint fit helps clarify spectrum of MAXI J1535-571
• 03 May 2018: PhD thesis finds QPO in NICER data of MAXI J1535-571
• 01 December 2017: Variability characteristics of black-hole binary GRS 1915+105
• 20 October 2017: NICER observes X-ray flares from Cygnus X-1
• 22 September 2017: NICER sees a MAXI black hole

Accreting Neutron Star Systems:

• 31 October 2024: A vampire star's reflection
• 10 October 2024: Approaching "critical luminosity"
• 3 October 2024: Aql X-1: Past and present accretion outbursts on display
• 1 August 2024: Opportunities that interrupt
• 25 April 2024: A speedy MAXI-OHMAN-NICER response
• 4 April 2024: 8-second pulses end 10-year slumber
• 29 February 2024: Determining the orbit of a new pulsar
• 22 February 2024: NICER discovers a new millisecond pulsar
• 4 January 2024: A "shy" X-ray pulsar slowly makes itself known
• 21 December 2023: Launching jets: the X-ray binary puzzle
• 7 December 2023: The Slant on Sco X-1
• 9 November 2023: A squeezed disk
• 26 October 2023: Spiders springing up
• 19 October 2023: Connecting the Dots through Flares and Dips
• 05 October 2023: Matter in, matter out
• 24 August 2023: Pulsing Corona in an AMXP?
• 17 August 2023: OHMAN Snags a Rare Superburst
• 13 July 2023: Good news from XB-NEWS
• 4 May 2023: May the Nuclear Force be with 4U 1730-22
• 27April 2023: Confirming an outbursting AMXP
• 13 April 2023: An old friend reappears
• 30 March 2023: A broadband view of X-ray bursts
• 16 February 2023: Mapping binaries with multiwavelength "echoes"
• 09 February 2023: An Eventual Giant
• 05 January 2023: A Holiday Outburst
• 06 October 2022: X-ray/Radio Correlation Probes Jet Outflows in High-Mass X-ray Binaries
• 15 September 2022: The Rising of XTE J1701-462
• 08 September 2022: Neutron Star Outburst in a Globular Cluster
• 25 August 2022: A New Outburst from a Rosetta Stone Pulsar
• 18 August 2022: NICER Tracks a Faint, Distant, Short-lived Pulsar Outburst
• 11 August 2022: NICER reveals the anomalous fast orbital expansion of the eclipsing pulsar SWIFT J1749.4-2807
• 4 August 2022: Eclipses reveal more than they conceal
• 21 Jul 2022:Accretion features on display in an eclipsing pulsar system
• 14 Jul 2022: Further NICER insights into X-ray bursts and their effects on accretion disks
• 7 Jul 2022: A Pulsar's Eccentric Orbital Habit
• 30 Jun 2022: NICER monitors thermonuclear outbursts in a neutron star binary
• 23 Jun 2022: NICER discovers its 2nd accreting millisecond pulsar in two weeks
• 9 Jun 2022: Probing absorption of X-rays in a neutron-star binary
• 26 May 2022: Reactivation of 4U 1730-22 Observed by NICER
• 17 February 2022: NICER Helps Solve a Hot Neutron Star Puzzle
• 10 February 2022: Accreting on the edge: Witnessing accretion regime transitions on a magnetized neutron star
• 03 February 2022: Using reflection to constrain the radius of a neutron star
• 23 December 2021: Classic accretion-disk phenomena in the brightest giant outburst of 2S 1417-624
• 09 December 2021: NICER Surveys the Explosive Behavior of Aquila X-1
• 25 November 2021: NICER Takes the Pulse of an SMC BeXRB
• 28 October 2021: NICER Monitors an X-ray Pulsar Giant Outburst in Decline
• 30 September 2021: Neutron-Star Spin-up in a "Giant" Outburst
• 26 August 2021: MAXI Triggers NICER Observations of a Superburst's After-effects
• 29 July 2021: NICER Tracks Recovery from a Long-duration Thermonuclear Burst on a Neutron Star
• 15 July 2021: NICER Confirms a Neutron Star Resides in the Historical X-ray Binary 4U 1730-22
• 25 February 2021: NICER TOO Observation of 2S 1553-542
• 04 February 2021: NICER constrains the nature of the companion star in IGR J17494-3030
• 28 January 2021: NICER observes thermonuclear bursts with secondary peaks from the low-mass X-ray binary 4U 1608-52
• 14 January 2021: NICER Tracks Giant Outburst of X-ray Binary 1A 0535+262 to Completion
• 07 January 2021: The Burning Atmosphere
• 26 November 2020: Brightest Outburst from A0535
• 19 November 2020: Unstable Burning
• 29 October 2020: NICER discovers a new millisecond pulsar in an ultracompact orbit
• 02 July 2020: A long-duration X-ray burst from IGR J17062-6143
• 25 June 2020: eROSITA points NICER to a rare X-ray binary outburst in the Large Magellanic Cloud
• 18 June 2020: Short-duration milliHertz QPO seen in 4U 1636-53
• 28 May 2020: Recent MAXI alert likely triggered by accreting X-ray binary MAXI J0911-655
• 21 May 2020: B(e) X-ray binary system GRO J1008-57 caught in an outburst
• 30 April 2020: The NICER-NuSTAR view of the Neutron Star Low-mass X-ray Binary 4U 1735-44
• 09 April 2020: NICER observes an outburst of the Rapid Burster
• 19 March 2020: Thermonuclear X-ray bursts reveal that Swift J1858.6-0814 hosts a neutron star
• 27 February 2020: NICER detects Type 1 X-ray bursts from XTE J1739-285
• 19 December 2019: NICER sees bright pulsar in Magellanic bridge
• 28 November 2019: NICER discovers 9.29 sec pulsations in RX J0209.6-7427
• 31 October 2019: NICER detects multiple bursts from neutron star MAXI J1807+132
• 24 October 2019: NICER discovers pulsations from new transient Swift J1845.7-0037
• 03 October 2019: NICER seeks detection of periodicity from re-awakened XTE J1739-285
• 26 September 2019: An evolving broad iron line from the first Galactic ultraluminous X-ray pulsar, Swift J0243.6+6124
• 19 September 2019: Unexpected changes detected in burst behavior from SAX J1808.4-3658
• 12 September 2019: SAX J1808.4-3658 delayed-helium bursts seen in exquisite detail
• 15 August 2019: NICER observes a secondary peak in a thermonuclear burst from 4U 1608-52
• 08 August 2019: NICER tracks a new outburst from SAX J1808.4-3658
• 18 July 2019: NICER and NuSTAR simultaneously catch four X-ray bursts from 4U 1636-536
• 27 June 2019: NICER puts a magnifying glass on a rare outburst from an accreting pulsar
• 13 June 2019: NICER X-rays the photosphere of a neutron star's companion
• 09 May 2019: Establishing IGR 17379-3747's large magnetic axis inclination
• 14 March 2019: X-ray burst shows evidence of gravitational redshifting from neutron star
• 07 March 2019: NICER takes part in a large multiwavelength campaign on Sco X-1
• 20 December 2018: Brightening in Circinus X-1 reveals outflowing wind
• 14 December 2018: NICER demonstrates readiness to provide long-term timing for unusual accreting pulsar
• 20 September 2018: Accreting MSP IGR J17591-2342 continues to brighten
• 30 August 2018: NICER and NuSTAR jointly discover that IGR J17591-2342 is in a binary system
• 16 August 2018: NICER discovers oscillatory nuclear burning in LMXP GS 1826-238
• 26 July 2018: Rarely visible accreting pulsar observed in 2018 outburst
• 05 July 2018: NICER observes unusual burst oscillations in 4U 1728-34
• 21 June 2018: Joint NICER/GBM observations of the first Galactic ULX pulsar
• 01 June 2018: NICER detects a soft X-ray kilohertz QPO in 4U 0614+09
• 10 May 2018: A NICER look at the Aql X-1 hard state
• 26 April 2018: Pulsar and orbital periodicities discovered in IGR J17062-6143
• 19 April 2018: NICER detects multiple "reflection" features in the low-mass X-ray binary Serpens X-1
• 12 April 2018: NICER discovers a new pulsar in IGR J17379-3747
• 05 April 2018: NICER sees an accreting millisecond pulsar
• 16 March 2018: Oscillations detected in the rise phase of a Type I X-ray burst
• 09 February 2018: Spectral timing of Aquila X-1
• 02 February 2018: NICER observes rare short-recurrence X-ray bursts
• 23 January 2018: Intensity changes in the observed pulsed flux from Swift J0243.6+6124
• 21 December 2017: Marginally-stable burning observed in the LMXB system GS 1826-24
• 27 October 2017: NICER helps determine orbit of newly-discovered neutron star
• 13 October 2017: NICER sees neutron star superexpansion burst in unprecedented detail

Other Accreting Systems:

• 22 August 2024: NICER's 3rd neutron-star radius measurement
• 27 June 2024: Mysteriluminous
• 20 June 2024: Reflecting on binary classification
• 7 March 2024: Looking for "echoes" in NICER spectra
• 08 February 2024: Tracking dynamic plasmas
• 10 August 2023: NICER discovers super-soft modulations in a new nova
• 16 March 2023: The return of the inner Galaxy
• 19 January 2023: Watching a "Cataclysm" Unfold
• 2 May 2022: Sub-Second Synchrony for SS Cygni
• 16 December 2021: NICER tracks the evolution of a rare X-ray-bright Dwarf Nova
• 09 September 2021: The Continuing Case of RS Oph
• 19 August 2021: Continued NICER monitoring of the recurrent nova RS Oph
• 12 August 2021: NICER Observes the Rare Recurring Nova RS Ophiuchi
• 05 August 2021: The Changing X-ray Colors of a Spinning White Dwarf
• 08 April 2021: Dance of the White Dwarfs
• 04 March 2021: NICER Probes Unusual Accretion Conditions
• 08 October 2020: NICER Observes a New New Star
• 30 July 2020: AM Her: The X-ray-Optical Connection
• 14 May 2020: NICER observes a compact binary in outburst
• 16 April 2020: The Sudden Re-appearance of Eta Carinae
• 26 December 2019: Eta Carina nearing closest approach - X-ray flares detected by NICER
• 22 August 2019: NICER reveals the intricacies of the innermost accretion disk in an ultra-compact X-ray binary
• 04 July 2019: Dramatic changes in flaring behavior in only 15 minutes
• 25 April 2019: Swift J1858.6-0814: A rare, partially-obscured X-ray binary
• 11 October 2018: Probing the evolution of the most compact binary known
• 19 July 2018: NICER observations of Cygnus X-3

Rotation-powered Pulsars:

• 26 September 2024: Winding down slowly
• 29 August 2024: Toward understanding neutron star interiors
• 4 July 2024: Magnificent neutron stars
• 16 May 2024: A new isolated neutron star
• 2 May 2024: A surprising slow-down
• 14 March 2024: A "strobe light" to explore a pulsar's surroundings
• 28 December 2023: Timing to Disentangle
• 23 November 2023: Magnetic fields quirkier and quirkier
• 20 July 2023: Exploring Neutron Star Atmospheres
• 29 December 2022: Revisiting neutron star radii with new tools
• 15 December 2022: Testing Transitional Millisecond Pulsar Models
• 29 September 2022: The long-term slowdown of a nearby celestial clock
• 28 April 2022: Assessing the stability of Nature's best clocks
• 7 October 2021: NICER Enables New Limits on Gravitational-wave Emission from Mountains on Neutron Stars
• 17 June 2021: Limiting Pulsar Mountains
• 13 May 2021: Parity Purity
• 22 April 2021: Determining the Stiffness of Neutron Stars
• 15 April 2021: Unlocking a secret of the Crab Pulsar with NICER/ISS and ground-based telescopes
• 01 October 2020: NICER discovers the long-term decay of a millisecond pulsar's orbit
• 27 August 2020: Return of the Big Glitcher: NICER timing and glitches of PSR J0537-6910
• 02 April 2020: NICER watches as the Moon blocks the Crab pulsar
• 05 March 2020: NICER results on PSR J0030+0451 prompt further studies
• 13 February 2020: New paper shows profile shifts in PSR J0218+4232
• 12 December 2019: First NICER Key Science results released
• 10 October 2019: New X-ray pulsars point to the future of pulsar physics
• 11 July 2019: NICER's first neutron star radius measurement to be submitted soon
• 21 February 2019: High-precision X-ray timing of three millisecond pulsars with NICER
• 28 September 2018: X-ray observations of PSR B0656+14 show multiple emission components
• 13 September 2018: NICER improves understanding of pulsars seen only in X-rays
• 06 September 2018: MSP timing stability rivals ground-based radio telescopes
• 03 August 2018: Pulsar X-ray light curves give insight to key NICER science goal
• 18 January 2018: PSR J0030+0451 pulsations as seen by XMM-Newton and NICER
• 12 January 2018: Millisecond pulsar detected for the first time in X-rays
• 03 November 2017: X-ray pulsations discovered from PSR J1231-1411
• 06 October 2017: Pulsar J0030+0451 light curve collected by NICER

Magnetars & Soft Gamma Repeaters:

• 24 October 2024:Do X-rays accompany fast radio bursts?
• 5 September 2024: A magnetar bursting into prominence
• 15 February 2024: A Magnetar Tantrum Yields Clues to Enigmatic Radio Signals
• 22 June 2023: Taking a Magnetar's Pulse
• 23 February 2023: Radio Silence from a Magnetar During an X-ray Outburst
• 24 November 2022: A new link between neutron star spin and emission events
• 20 October 2022: Observing an Outburst from the Fast Radio Burst source SGR 1935+2154 with NICER
• 21 April 2022: An X-ray outburst from a radio-loud magnetar after 13 years of quiescence
• 30 December 2021: A new X-ray phenomenon revealed in a magnetar through near-daily NICER observations
• 11 November 2021: NICER Hones In On the Origin of Short Bursts from Magnetars
• 16 September 2021: NICER Monitoring of a New Magnetar Explores its Unusually Long-Lived Activity
• 10 June 2021: A new magnetar, Swift J1555.2-5402, confirmed and monitored with NICER
• 12 November 2020: NICER confirmation of the magnetar nature of SGR 1830-0645: Spindown, spectra, and short bursts
• 05 November 2020: FR/GR/B
• 15 October 2020: Taking the Pulse of a Magnetar
• 10 September 2020: A NICER View of the 2020 outburst of PSR J1846-0258
• 03 September 2020: NICER Observations of Swift J1818.0-1607: a Missing Link between Magnetars and Rotation-Powered
• 07 May 2020: NICER detection of the burst forest from the magnetar SGR 1935+2154
• 26 March 2020: A new magnetar, Swift J1818.0-1607, offers clues to neutron star evolution
• 15 February 2019: A new outburst from magnetar XTE J1810-197
• 19 October 2018: Rapid follow-up of bright, short bursts from SGR 1806-20
• 01 March 2018: NICER detects changes in magnetar 1E 1048.9-5937

Other stars & Solar System Bodies:

• 13 June 2024: Escape from a giant star
• 21 March 2024: Capturing the Rising Phase of a Giant Stellar Flare
• 30 November 2023: Coronal activity in a young Sun-like star
• 2 November 2023: The Fates of Irradiated Atmospheres
• 28 September 2023: A Superflare in a Planet-hosting Young Solar Analogue
• 27 July 2023: NICER's speedy follow-up to a giant stellar flare from IM Peg
• 15 June 2023: A double-dwarf binary
• 01 June 2023:The Flaring Dance of a Magnetic Duo
• 02 March 2023: Delayed X-ray Brightening at Magnetic Loop Footpoints in Two Superflares from a Young Sun-like Star
• 28 Jul 2022: NICER Reveals The Shocking and Explosive Nature of the Superstar Eta Carinae
• 19 May 2022: Observing a Pulsar and Finding Oxygen Around Earth
• 06 January 2022: NICER Detects Neutral or Nearly Neutral Oxygen Line From Earth's Atmosphere
• 02 December 2021: Swapping Charge with the Sun
• 20 August 2020: The Rising
• 09 January 2020: NICER observes Betelgeuse in response to recent dimming
• 02 May 2019: NICER evaluates X-ray environment near Sun-like stars
• 07 February 2019: MAXI-triggered observations of stellar flares yield rapid NICER results
• 24 January 2019: Joint observations catch stellar flare from UX Ari from radio to X-rays
• 06 December 2018: NICER planning to "X-ray" the Solar System
• 01 November 2018: NICER watches a flare from a nearby stellar system
• 29 November 2018: NICER follow-up observations of a MAXI flare from UX Ari
• 12 July 2018: The Demon Star winked in X-rays
• 28 December 2017: Massive star studied by NICER topic for a question on Jeopardy
• 15 December 2017: NICER sees X-ray flares from cataclysmic variable TT Arietis
• 08 December 2017: Observations of stellar flares illuminate magnetism in young stars

Follow-up of New Transients:

• 9 May 2024: The more the merrier
• 18 April 2024: A flash triggers a multiwavelength hunt
• 25 May 2023: A nearby supernova
• 23 March 2023: With a Swift assist, MAXI and NICER uncover a new candidate black-hole
• 01 December 2022: An exceptional black-hole jet revealed in a multi-wavelength view of a star's destruction
• 17 November 2022: Highly variable X-ray emission from a doomed star
• 10 November 2022: NICER Identifies an X-ray Transient
• 27 October 2022: Formation of an X-ray "corona" around a supermassive black hole 3 years after it destroyed a star
• 13 October 2022: OHMAN Alerts NICER to an Unprecedented Celestial Explosion
• 16 Jun 2022: NICER discovers millisecond pulsations from the new transient MAXI J1816-195
• 12 May 2022: NICER Disentangles Adjacent X-ray Emitters
• 24 February 2022: A Relativistic Jet from a Shredded Star 7 Billion Light Years Away
• 27 January 2022: NICER homes in on a new MAXI source discovery
• 20 January 2022: Last Gasp of an Unfortunate Star?
• 02 September 2021: NICER & Friends Uncover a Pulsar Orbit
• 22 July 2021: NICER Glimpses a Newborn Compact Object 200 million Light Years Away
• 27 May 2021: Successful Application of NICER's New Sky Scanning Capability
• 06 May 2021: X-ray quasi-periodic eruptions from two previously quiescent galaxies
• 29 April 2021: NICER Discovers Pulsations from MAXI J0903-531
• 11 March 2021: A NICER First Look at the New X-ray Transient IGR J17533-2928
• 24 December 2020: A star ripped apart?
• 13 August 2020: A Pulsar in Transition?
• 16 July 2020: NICER Observations of Stellar Death by Black Hole
• 07 November 2019: MAXI points NICER to a new brightening source
• 05 September 2019: NICER makes its first detection of a GRB afterglow
• 01 August 2019: EXO 1846-031 reawakens after 34-year silence
• 30 May 2019: NICER sees X-rays from star in another galaxy getting ripped apart
• 18 April 2019: NICER Observations of a Possible SN 1a: AT2019daj
• 04 April 2019: Follow-up of MAXI triggers provides new insight into transient events
• 31 January 2019: NICER follows up on a bonanza of MAXI-discovered Galactic black hole systems
• 17 January 2019: Combined X-ray data uncovers a new class of transient AGN flares
• 15 November 2018: Observations of new X-ray transient show intense flaring episodes
• 08 November 2018: Unexplained X-ray transient event in active galaxy observed by NICER
• 24 May 2018: Target of Opportunity observations of new transient ASASSN-18el
• 22 March 2018: Quasi-periodic oscillation detected in new transient MAXI 1820+070
• 29 September 2017: Periodic variations in a MAXI black hole candidate

XTI Instrumental Studies:

• 3 August 2023: Investigating and mitigating NICER data degradation during orbit day
• 08 December 2022: Cooperative Calibration
• 06 August 2020: NICER Gets a Heat Treatment
• 06 June 2019: NICER teams up with OSIRIS-Rex for calibration study
• 25 October 2018: Modeling of X-ray background critical to NICER success
• 09 August 2018: Space weather study guides background estimates for NICER data

SEXTANT Results:

• 01 February 2024: A NICER/SEXTANT innovator recognized
• 09 March 2018: SEXTANT program improves its XNAV capabilities
• 17 November 2017: Autonomous X-ray navigation successfully demonstrated
• 11 November 2017: SEXTANT ground tests contribute to on-going experiment

NICER Mission:

• 11 April 2024: NICER at HEAD 21
• 18 January 2024: Earth as a giant sunshade
• 11 January 2024: "Les bons temps" at the AAS
• 21 September 2023: Response to NICER's 6th General Observer Cycle
• 22 September 2022: Record Response to NICER's 5th Guest Observer Call for Proposals
• 01 September 2022: NICER Hosts a Proposal & Science Workshop
• 14 April 2022: NICER's Cosmic Calibration
• 17 March 2022: The NICER Team Wins the Rossi Prize
• 18 November 2021: NICER Cycle 4 Guest Observer Proposals Top Prior-year Totals
• 01 July 2021: Successful Verification Test of OHMAN Software
• 20 May 2021: NICER's first public Data Analysis and Science Workshop
• 31 December 2020: Engaging the Spanish-Speaking Community with NICER's Black Hole Research
• 17 December 2020: Powerdown
• 10 December 2020: The Impact of NICER's Exploration of Neutron Star Interior Composition
• 03 December 2020: OHMAN!
• 04 June 2020: NICER celebrates 3 years in space
• 23 April 2020: Significant NICER presence at recent virtual physics meeting
• 02 January 2020: Theorists speculate on implications of NICER's recent key result
• 12 December 2019: First NICER Key Science results released
• 14 November 2019: Key results depend on sophisticated numerical simulations
• 25 July 2019: NICER's mission officially extended to 2022
• 21 March 2019: High visibility for NICER science at the March 2019 HEAD meeting
• 28 February 2019: Scientific American heralds NICER's study of neutron star interiors
• 10 January 2019: Nature magazine highlights NICER black hole result with cover story
• 03 January 2019: NICER's data archive demonstrates its wide dynamic range
• 27 December 2018: NICER receives observing proposals from scientists around the world
• 29 March 2018: Using observations during slew periods for opportunity science
• 22 February 2018: First refereed paper using NICER data published in the Astrophysical Journal