# Constraints on Lorentz violation from gravitational Čerenkov radiation

## Abstract

Limits on gravitational Cerenkov radiation by cosmic rays are obtained and used to constrain coefficients for Lorentz violation in the gravity sector associated with operators of even mass dimensions, including orientation-dependent effects. We use existing data from cosmic-ray telescopes to obtain conservative two-sided constraints on 80 distinct Lorentz-violating operators of dimensions four, six, and eight, along with conservative one-sided constraints on three others. Existing limits on the nine minimal operators at dimension four are improved by factors of up to a billion, while 74 of our explicit limits represent stringent first constraints on nonminimal operators. As a result, prospects are discussed for future analyses incorporating effects of Lorentz violation in the matter sector, the role of gravitational Cerenkov radiation by high-energy photons, data from gravitational-wave observatories, the tired-light effect, and electromagnetic Cerenkov radiation by gravitons.

- Authors:

- Publication Date:

- Research Org.:
- Indiana Univ., Bloomington, IN (United States)

- Sponsoring Org.:
- USDOE

- OSTI Identifier:
- 1213596

- Alternate Identifier(s):
- OSTI ID: 1242269

- Grant/Contract Number:
- SC0010120

- Resource Type:
- Published Article

- Journal Name:
- Physics Letters B

- Additional Journal Information:
- Journal Name: Physics Letters B Journal Volume: 749 Journal Issue: C; Journal ID: ISSN 0370-2693

- Publisher:
- Elsevier

- Country of Publication:
- Netherlands

- Language:
- English

- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS

### Citation Formats

```
Kostelecký, V. Alan, and Tasson, Jay D. Constraints on Lorentz violation from gravitational Čerenkov radiation. Netherlands: N. p., 2015.
Web. doi:10.1016/j.physletb.2015.08.060.
```

```
Kostelecký, V. Alan, & Tasson, Jay D. Constraints on Lorentz violation from gravitational Čerenkov radiation. Netherlands. doi:10.1016/j.physletb.2015.08.060.
```

```
Kostelecký, V. Alan, and Tasson, Jay D. Thu .
"Constraints on Lorentz violation from gravitational Čerenkov radiation". Netherlands. doi:10.1016/j.physletb.2015.08.060.
```

```
@article{osti_1213596,
```

title = {Constraints on Lorentz violation from gravitational Čerenkov radiation},

author = {Kostelecký, V. Alan and Tasson, Jay D.},

abstractNote = {Limits on gravitational Cerenkov radiation by cosmic rays are obtained and used to constrain coefficients for Lorentz violation in the gravity sector associated with operators of even mass dimensions, including orientation-dependent effects. We use existing data from cosmic-ray telescopes to obtain conservative two-sided constraints on 80 distinct Lorentz-violating operators of dimensions four, six, and eight, along with conservative one-sided constraints on three others. Existing limits on the nine minimal operators at dimension four are improved by factors of up to a billion, while 74 of our explicit limits represent stringent first constraints on nonminimal operators. As a result, prospects are discussed for future analyses incorporating effects of Lorentz violation in the matter sector, the role of gravitational Cerenkov radiation by high-energy photons, data from gravitational-wave observatories, the tired-light effect, and electromagnetic Cerenkov radiation by gravitons.},

doi = {10.1016/j.physletb.2015.08.060},

journal = {Physics Letters B},

number = C,

volume = 749,

place = {Netherlands},

year = {2015},

month = {10}

}

DOI: 10.1016/j.physletb.2015.08.060

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Works referencing / citing this record:

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