Search for multiwavelength emission from the binary millisecond pulsar PSR J1836-2354A in the globular cluster M22

Abstract

We present a multi-band search for X-ray, optical and $\gamma$-ray emission of the radio binary millisecond pulsar J1836-2354A, hosted in the globular cluster M22. X-ray emission is significantly detected in two Chandra observations, performed in 2005 and 2014, at a luminosity of $\sim$2-3$\times$10${}^{30}$ erg s${}^{-1}$, in the 0.5-8 keV energy range. The radio and the X-ray source positions are found consistent within 1$\sigma$ error box. No detection is found in archival XMM-Newton and Swift/XRT observations, compatible with the Chandra flux level. The low statistics prevents us to assess if the X-ray source varied between the two observations. The X-ray spectrum is consistent with a power-law of photon index $\sim$1.5. We favour as the most probable origin of the X-ray emission an intrabinary shock scenario. We searched for optical and $\gamma$-ray counterparts to the radio source using data from Hubble Space Telescope and Fermi-LAT catalogues, respectively. No optical counterpart down to V=25.9 and I=24.7 (3$\sigma$) is detected, which suggests a companion mass of 0.1-0.2 $M_{\odot }$. Combined with the low X-ray luminosity, this is consistent with a black widow nature of PSR J1636-2354A. Inspecting the 8-year Fermi-LAT catalogue, we found a $\gamma$-ray source, 4FGL J1836.8-2354, with a positional uncertainty consistent with the globular cluster, but not with the radio position of the millisecond pulsar.

References in corpus (42)

• On the Absorption of X-rays in the Interstellar Medium
• The Swift X-ray Telescope
• Atomic Data for Astrophysics. II. New Analytic Fits for Photoionization Cross Sections of Atoms and Ions
• New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit
• Evolutionary models for very-low-mass stars and brown dwarfs with dusty atmospheres
• Fermi Large Area Telescope First Source Catalog
• The Photometric Performance and Calibration of the HST Advanced Camera For Surveys
• A Radio Pulsar/X-ray Binary Link
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. I. Overview of the Project and Detection of Multiple Stellar Populations
• Swings between rotation and accretion power in a millisecond binary pulsar
• A Hydrogen Atmosphere Spectral Model Applied to the Neutron Star X7 in the Globular Cluster 47 Tucanae
• A state change in the low-mass X-ray binary XSS J12270-4859
• A state change in the missing link binary pulsar system PSR J1023+0038
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters - XVII. Public Catalogue Release
• A population of gamma-ray emitting globular clusters seen with the Fermi Large Area Telescope
• Chandra X-Ray Observations of Nineteen Millisecond Pulsars in the Globular Cluster 47 Tucanae
• High-Energy Emission From Millisecond Pulsars
• Uncloaking globular clusters in the inner Galaxy
• Intra-Binary Shock Heating of Black Widow Companions
• Optical spectroscopy and demographics of redback millisecond pulsar binaries
• Where May Ultra-Fast Rotating Neutron Stars Be Hidden?
• X-ray states of redback millisecond pulsars
• An X-ray Variable Millisecond Pulsar in the Globular Cluster 47 Tucanae: Closing the Link to Low Mass X-ray Binaries
• X-Ray Observations of Black Widow Pulsars
• Gamma-ray Pulsar Revolution
• Constraining Relativistic Bow Shock Properties in Rotation-Powered Millisecond Pulsar Binaries
• On the Origin of Sub-subgiant Stars. I. Demographics
• Studying Millisecond Pulsars in X-rays
• The Maveric Survey: a Red Straggler Binary with an Invisible Companion in the Galactic Globular Cluster M10
• Multi-wavelength observations of the transitional millisecond pulsar binary XSSJ12270-4859
• Chandra studies of the globular cluster 47 Tucanae: A deeper X-ray source catalogue, five new X-ray counterparts to millisecond radio pulsars, and new constraints to r-mode instability window
• A {\it Chandra} Survey of Milky Way Globular Clusters I: Emissivity and Abundance of Weak X-ray Sources
• Six New Recycled Globular Cluster Pulsars Discovered with the Green Bank Telescope
• A Chandra Look at the X-ray Faint Millisecond Pulsars in the Globular Cluster NGC 6752
• X-ray emission from the planet pulsar B1257+12
• X-ray sources and their optical counterparts in the globular cluster M 22
• X-Ray Studies of Redbacks
• Gamma-ray emission from globular clusters 2MS-GC01, IC 1257, NGC5904, NGC6656 and FSR1735
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XIII. ACS/WFC Parallel-Field Catalogues
• First XMM-Newton Observations of the Globular Cluster M22
• CV1 in the globular cluster M 22: confirming its nature through X-ray observations and optical spectroscopy
• X-Ray and Optical Properties of Black Widows and Redbacks

Cited by in corpus (4)

• A Census of X-ray Millisecond Pulsars in Globular Clusters
• A comparison of millisecond pulsar populations between globular clusters and the Galactic field
• Chandra and HST Studies of Six Millisecond Pulsars in the Globular Cluster M13
• A Multiwavelength Machine-learning Approach to Classifying X-ray Sources in the Fields of Unidentified 4FGL-DR4 sources