juliensimon/grbweb-unified-grb-catalog

---
license: cc-by-4.0
pretty_name: "GRBweb Unified Multi-Instrument GRB Catalog"
language:
- en
description: "Unified gamma-ray burst catalog from GRBweb combining Fermi, Swift, BATSE, BeppoSAX, IPN, and other detectors"
task_categories:
- tabular-classification
tags:
- space
- grb
- gamma-ray-bursts
- multi-instrument
- astronomy
- open-data
- tabular-data
size_categories:
- 1K<n<10K
configs:
- config_name: default
data_files:
- split: train
path: data/grbweb.parquet
default: true
---

# GRBweb Unified Multi-Instrument GRB Catalog

*Part of the [Astronomy Datasets](https://huggingface.co/collections/juliensimon/astronomy-datasets-69c24caf2f17e36128946743) collection on Hugging Face.*

Unified catalog of **9,058** gamma-ray bursts detected across multiple space missions,
sourced from the [GRBweb](https://user-web.icecube.wisc.edu/~grbweb_public/) database maintained
by the IceCube Collaboration. Combines data from **Fermi GBM**, **Swift BAT**, **BATSE**,
**BeppoSAX**, **IPN**, and other instruments into a single deduplicated catalog.

## Dataset description

Gamma-ray bursts (GRBs) are the most energetic explosions in the universe. Different space
missions have detected GRBs since the early 1990s, but each instrument covers different
energy ranges, sky regions, and time periods. GRBweb unifies detections across all major
GRB instruments, providing a single cross-referenced catalog with consistent columns for
position, duration, fluence, and redshift.

Currently **9,058** GRBs (1,348 short, 6,548 long), of which
**741** have measured redshifts. Date range: **1991-04-21 to 2026-03-26**.

## Schema

| Column | Type | Description |
|--------|------|-------------|
| `grb_name` | string | Canonical GRB name (e.g. "GRB260326A") |
| `grb_name_fermi` | string | Fermi GBM trigger name (null if not detected by Fermi) |
| `t0_utc` | string | Trigger time (UTC, HH:MM:SS.sss) |
| `ra` | float | Right ascension (degrees, J2000) |
| `dec` | float | Declination (degrees, J2000) |
| `pos_error` | float | Position uncertainty (degrees, 1-sigma) |
| `t90` | float | T90 duration (s) — time containing 90% of fluence |
| `t90_error` | float | T90 uncertainty (s) |
| `t90_start` | string | T90 interval start time (UTC) |
| `fluence` | float | Total fluence (erg/cm^2) |
| `fluence_error` | float | Fluence uncertainty (erg/cm^2) |
| `redshift` | float | Spectroscopic or photometric redshift |
| `t100` | float | T100 duration (s) — total burst duration |
| `gbm_located` | bool | Whether Fermi GBM provided the localization |
| `mjd` | float | Modified Julian Date of trigger |
| `trigger_time` | datetime | Trigger time as datetime (derived from MJD) |
| `duration_class` | string | "short" (T90 < 2 s) or "long" (T90 >= 2 s) |

## Quick stats

- **9,058** gamma-ray bursts from multiple instruments
- **1,348** short GRBs, **6,548** long GRBs
- **741** with measured redshift
- **3,102** with Fermi GBM localization
- Date range: **1991-04-21 to 2026-03-26**
- Brightest burst: **GRB221009A** (fluence 3.88e-02 erg/cm^2)

## Usage

```python
from datasets import load_dataset

ds = load_dataset("juliensimon/grbweb-unified-grb-catalog", split="train")
df = ds.to_pandas()

# Short vs long GRBs
short = df[df["duration_class"] == "short"]
long = df[df["duration_class"] == "long"]
print(f"{len(short):,} short, {len(long):,} long GRBs")

# GRBs with measured redshift
z_known = df[df["redshift"].notna()]
print(f"{len(z_known):,} GRBs with redshift (z_max={z_known['redshift'].max():.2f})")

# T90 distribution
import matplotlib.pyplot as plt
df["t90"].dropna().apply(lambda x: max(x, 1e-3)).hist(bins=50, log=True)
plt.xlabel("T90 (s)")
plt.title("GRB Duration Distribution (GRBweb)")
```

## Data source

[GRBweb](https://user-web.icecube.wisc.edu/~grbweb_public/) — unified GRB database maintained
by the IceCube Collaboration at the University of Wisconsin-Madison. Combines detections from
Fermi GBM, Swift BAT, CGRO/BATSE, BeppoSAX, INTEGRAL, IPN, and other missions.

## Update schedule

Static dataset, rebuilt monthly. Source code: [juliensimon/space-datasets](https://github.com/juliensimon/space-datasets).

## Related datasets

- [gamma-ray-bursts](https://huggingface.co/datasets/juliensimon/gamma-ray-bursts) — Fermi GBM Burst Catalog
- [fermi-4fgl](https://huggingface.co/datasets/juliensimon/fermi-4fgl) — Fermi LAT 4FGL Source Catalog
- [near-earth-objects](https://huggingface.co/datasets/juliensimon/near-earth-objects) — NEO close approaches

## Citation

```bibtex
@dataset{grbweb_unified,
author = {Simon, Julien},
title = {GRBweb Unified Multi-Instrument GRB Catalog},
year = {2026},
publisher = {Hugging Face},
url = {https://huggingface.co/datasets/juliensimon/grbweb-unified-grb-catalog},
note = {Based on GRBweb data from IceCube/University of Wisconsin-Madison}
}
```

## License

[CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/)