Table · dataset · 2022
Fermi LAT sources observed with the GMRT
Listed in IVOA Registry (Virtual Observatory)
We performed deep observations to search for radio pulsations in the directions of 375 unassociated Fermi Large Area Telescope {gamma}-ray sources using the Giant Metrewave Radio Telescope (GMRT) at 322 and 607MHz.
Description
In this paper we report the discovery of three millisecond pulsars (MSPs), PSR J0248+4230, PSR J1207-5050, and PSR J1536-4948. We conducted follow-up timing observations for ~5yr with the GMRT and derived phase-coherent timing models for these MSPs.
PSR J0248+4230 and J1207-5050 are isolated MSPs having periodicities of 2.60ms and 4.84ms. PSR J1536-4948 is a 3.07ms pulsar in a binary system with an orbital period of ~62 days about a companion of a minimum mass of 0.32M_{sun}_. We also present multifrequency pulse profiles of these MSPs from the GMRT observations.
Read the rest (2 more)
PSR J1536-4948 is an MSP with an extremely wide pulse profile having multiple components. Using the radio timing ephemeris we subsequently detected {gamma}-ray pulsations from these three MSPs, confirming them as the sources powering the {gamma}-ray emission. For PSR J1536-4948 we performed combined radio-{gamma}-ray timing using ~11.6yr of {gamma}-ray pulse times of arrival (TOAs) along with the radio TOAs.
PSR J1536-4948 also shows evidence for pulsed {gamma}-ray emission out to above 25GeV, confirming earlier associations of this MSP with a >=10GeV point source. The multiwavelength pulse profiles of all three MSPs offer challenges to models of radio and {gamma}-ray emission in pulsar magnetospheres.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/910/160 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2021ApJ...910..160B ui.adsabs.harvard.edu/abs/2021ApJ...910..160B ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/apj/910/160 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 73%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/910/160 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (73%) |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:gamma-ray | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:radio | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |